DataMica Material & Technology (Shanghai) Co., Ltd.

What is Mica?(2024年)

datamica — 2024-04-12T16:25:30+0900

https://www.datamica.com/what-is-mica-2.html

Mica is one of the materials used in electrical engineering and can be found in many electric motors, generators and transformers. Especially in areas of heavy use: high pressure and high temperature.

Ⅰ. What is mica?
Mica is named for its shimmering appearance. Different types of mica can be easily distinguished by colour. Muscovite has a light appearance and phlogopite has a dark appearance. Mica is a mined mineral. It belongs to the monoclinic crystal system and consists of basic aluminium silicates of different compositions.

From the large number of natural mica types, only two technical requirements are questioned: muscovite and phlogopite.

Muscovite, also known as potassium mica, is a potassium aluminium disilicate. Muscovite is available in a variety of colors: ruby in colour, but also in white, green or brown.

Phlogopite, also known as magnesia mica, is a potassium-magnesium-aluminum-iron disilicate. Phlogopite has only one color in nature: the colour is similar to that of amber, so it is also called amber mica.

Ⅱ. The history of mica
Mica was mentioned as early as 1546 by the mineralogist Georgius Agricola. Where mica is readily available and affordable, and glass is too expensive, the mineral is used to make window panes, especially in rural areas.

In the 20th and 19th centuries, Charles-Victor Mauguin used X-rays to study mica for the first time. Mica means faint glow or glow.

Mica can be found almost anywhere in the world, but is worth mining in India, South Africa, Latin America and Russia, where it is embedded in bedrock in lumps or slabs.

Ⅲ. Performance and technical data of mica
1. Physical properties of mica products

Mica has very good electrical insulation and good thermal conductivity. And creep and dielectric strength are also very good.

2. Mechanical properties of mica

Mica is a silicate, a compound of silicon. Mica always has a two-dimensional layer structure. Strong bonds work within layers, but weaker bonds between layers.

Ⅳ. What is use of mica?
Due to the above properties, mica sheet is an ideal insulator for mounting power transistors on cooling plates. Due to its heat resistance, it is also used as an insulator holder for heating elements.

The HF value is also noticeable, which is why it is used as a dielectric for high-quality high-frequency capacitors. Various components are used in the insulation system of high-voltage motors, which must be optimally matched to each other. High-quality mica products (mica tape and mica plate) are used as main and partial conductor insulation.

The main uses of mica components are:

Construction of induction furnaces, electric arc furnaces and high frequency furnaces;

High pressure applications;

High temperature applications;

Sealing industries (e.g. oil and gas distribution);

Heating elements for electrical and thermomechanical applications.

As a mica manufacturing company, we will do our best to meet all the needs of customers.

What Are Mica Sheets? What Types Are There?(2024年)

datamica — 2024-04-12T16:24:59+0900

https://www.datamica.com/what-are-mica-sheets-what-types-are-there.html

Natural mica is a kind of non-metallic mineral, which contains a variety of components, mainly SiO2 content is generally about 49%, Al2O3 content is about 30%. Natural mica has good elasticity and toughness. Insulation, high temperature resistance, acid and alkali resistance, corrosion resistance, strong adhesion and other characteristics, it is an excellent additive. It is widely used in electrical appliances, welding electrodes, rubber, plastics, papermaking, paints, coatings, pigments, ceramics, cosmetics, new building materials and other industries, and has a wide range of mica sheet uses. With the continuous development of science and technology, people have opened up new application fields.

The characteristics and main chemical components of natural mica sheet: Muscovite crystals are hexagonal plates and columns, the joint surface is flat, and the aggregates are flakes or scales, so it is called fragmented natural mica.

Muscovite is white, transparent and translucent, and has a pure texture without spots.

Natural mica classification: mica, muscovite, colored mica, Lingshou vermiculite, mica flakes, phlogopite, biotite and other mica names.

1. What Is Mica Sheet?
Mica sheets are composed of polysilicon muscovite, quartz, garnet and rutile, etc. Albite, zoisite and chlorite can appear, garnet is rich in Fe and Mg, and Si in polysilicon muscovite can reach 3.369. Also a high pressure combination. It has thermal resistance function of insulation and low loss.

Mica sheet is made of thick mica after peeling, thickness setting, cutting, drilling or punching. It has a certain thickness and a certain shape. , aerospace, aviation, communications, radar, heat-resistant skeleton film, etc. as raw and auxiliary materials.

Electric heater chips, electric heater protection sheets, gaskets, electronic tube sheets, and light bulb sheets, because their materials are natural mineral products, have the characteristics of no pollution, good insulation, and high voltage resistance. Natural large mica sheets of various specifications can be punched according to customer needs.

2. Types of Mica Sheets
Types of mica flakes: mica flakes – muscovite flakes – phlogopite flakes – biotite flakes – sericite flakes – lepidolite flakes – sodium mica flakes – vanadium mica flakes – mica fragments – large mica flakes.

According to the application, mica sheets can generally be divided into three types: mica flakes (thin flake mica), mica for capacitors and mica thick flakes for electron tubes, and the area of these three types of mica.

Headquartered in Shanghai, DataMica is an innovative medium-sized company that is in the process of international development. The company develops and produces solution-oriented thermal and acoustic insulation components for the automotive and electromobility industries. Welcome to consult.

Now the price of thin mica sheet is reasonable, anything you need, please contact us.

The Performance and Use of Mica Tape and Analysis of Common Problems(2024年)

datamica — 2024-04-12T16:24:30+0900

https://www.datamica.com/the-performance-and-use-of-mica-tape-and-analysis-of-common-problems.html

Mica tape, also known as refractory mica tape, is a refractory insulating material.

Ⅰ. Classification of mica tapes
1. According to the purpose, mica products can be divided into mica tape for motor and mica tape for cable.

2. According to the structure, it is divided into the double-sided tape, single-sided tape, three-in-one tape, double-film tape, single-film tape, etc.

3. According to mica, it can be divided into synthetic mica tape, phlogopite tape, and muscovite tape.

Ⅱ. The performance of mica tape
1. Room temperature performance: synthetic mica tape is the best, the muscovite tape is second, and phlogopite tape is poor.

2. Insulation performance at high temperatures: synthetic mica tape is the best, phlogopite tape is second, and muscovite tape is poor.

3. High-temperature resistance: Synthetic mica tape fluor phlogopite tape, without crystal water, melting point 1375 ℃, large safety margin, best high-temperature resistance, phlogopite releases crystal water above 800 ℃, high-temperature resistance is the second, muscovite releases crystal water at 600 °C, and has poor high-temperature resistance.

The mika tape in the cable plays a huge role. Mica tape for fire-resistant safety cable is a high-performance mica insulation product with excellent high-temperature and combustion resistance. Powder mica tape has good flexibility in a normal state, and is suitable for the main fire-resistant insulating layer in various fire-resistant cables. There is basically no volatilization of harmful fumes when burning in an open flame, so this product is not only effective but also safe when used in cables.

Ⅲ. Common problems and solutions in the production process of mica tape
Various problems are often encountered in the production of mica tapes. Today, we will sort out some common problems and solutions for you:

1. If the pitch does not meet the regulations, the possible cause is that the traction is too fast or too slow, which can be solved by adjusting the traction line speed;

2. Excessive twisting, the reason is that the tension of pulling and slipping is insufficient, which can be solved by adjusting the tension of winding;

3. The broken belt is because the wrapping belt does not meet the requirements or the wrapping belt is too tight. The problem of the broken belt can be solved by changing the wrapping belt and adjusting the tension of the wrapping belt;

4. The belt is broken after the shaft is formed. The broken belt is caused by the mica on a single wire scraping against each other. The fractured belt after the shaft can be solved by adjusting the spool or taking protective measures;

5. Other problems caused by human factors.

Headquartered in Shanghai, DataMica is an innovative medium-sized company in the process of internationalization. The company develops and produces solution-oriented thermal and acoustic insulation components for the automotive and electric vehicle industries. Custom solutions are at the heart of the DataMica product portfolio. Welcome to consult.

If you want to know more about mica tape uses and mica tape application, please visit our website.

The Key Characteristics of Mica Tape and the Preparation Work Before Manufacturing(2024年)

datamica — 2024-04-12T16:22:50+0900

https://www.datamica.com/the-key-characteristics-of-mica-tape-and-the-preparation-work-before-manufacturing.html

Ⅰ. What are the key mica tape properties?
The low binder content of mica tapes is one of the first principles of mica tapes. In addition, the permeability of the mica tape and the compatibility with the impregnating resin are also important principles of selection. Mica tapes have a low binder content. After the insulating layer is treated with VPI, the impregnating resin can fully penetrate, the air gap is small, and the thermal conductivity of the insulating layer is improved.

The medium material of the low-glue mica tape is large-scale uncalcined muscovite paper, and the reinforcing material is an alkali-free glass cloth for electrical use and polyester film, polyimide film or resistance halogen polyimide. Among the components of low-viscosity mica tapes, the binder is the most important component.

Professional manufacturers will use bisphenol A epoxy resin as the main component of the adhesive, mainly because the epoxy resin has good adhesion after curing. Low shrinkage and good electrical and mechanical properties as well as moisture and chemical resistance. Especially in H-type or C-type mica tape adhesives, epoxy resins are converted with diphenyl ether epoxy adhesives or high-performance imines to improve the adhesion and flexibility of epoxy adhesives, and at the same time greatly improve heat resistance Sexual mica tape.

The plastic-free mica tape has sufficient softness at room temperature, which is conducive to wrapping the coil, and at the same time has good air permeability, which is beneficial to the insulating layer during the impregnation process of air and volatilized VPI. The extraction of material and the penetration of resin can ensure the integrity of the coil. performance.

Ⅱ. What are the preparations for the production of mica tapes?
Mica tape can be divided into: synthetic mica tape, phlogopite tape, muscovite tape. Has excellent high temperature resistance and combustion resistance. Powder mica tape has good flexibility under normal conditions and is suitable for the main fire-resistant insulating layer in various fire-resistant cables. When burning in an open flame, there is basically no volatilization of harmful fumes, so mica tape is not only effective but also safe when used in cables.

Composition and application of mica tape: Mica tape is suitable for fire-resistant mica tape and motor components of fire-resistant wire and cable.

Preparations before the production of mica tape:

1. Put the tools and measuring tools on the workbench and check whether the measuring tools are zeroed;

2. Check whether the mica tape is normal. If there is any abnormality, please report mica sheet uses to the maintenance personnel immediately for maintenance;

3. Prepare semi-finished products and materials according to the production plan, and check whether the semi-finished products and materials are qualified by experience and meet the process requirements, and install the qualified copper wire on the pay-off rack and adjust the tension;

4. Hang the gear according to the hemming distance required by the process, and select the hemming die according to the process requirements;

5. According to the mica tape required by the process, install the mica tape on the wrapping head in turn according to the number of wrapping layers, adjust the tension of the mica tape, and pull the wrapping guide rod of the mica tape to the front mold of the wrapping head in sequence;

6. Prepare the delivery reel as required, check whether the delivery reel is in good condition, and install the delivery reel on the delivery rack;

7. Pull the traction wire and wrap it around the traction wheel for 3-4 turns, fix one end of the traction wire on the take-up reel, and pull the other end to the front end of the winding die.

If you want to know more about what is mica tape, please visit our website.

As one of mica sheet suppliers, we can provide kinds of related products for sale, if you have needs, please contact us.

The Difference Between High Temperature Resistant Mica Sheet and Mica Gasket(2024年)

datamica — 2024-04-12T16:22:24+0900

https://www.datamica.com/the-difference-between-high-temperature-resistant-mica-sheet-and-mica-gasket.html

1. What is high temperature mica sheet?
Mica sheet heat resistant is an electrical insulating material composed of polysilicon muscovite, quartz, garnet and rutile, and its color is semi-metallic and metallic.

High temperature and high pressure is a relative concept. In daily life, a temperature above 100 degrees is considered high temperature, and a pressure higher than atmospheric pressure is high pressure. For example, the relative (atmospheric) pressure of a pressure cooker is only 0.8 MPa, and the temperature is only 117 °C. The industrial standard for high-pressure boilers is a pressure of 98MPa and a temperature of 510°C.

The so-called high temperature and high pressure resistance of materials mean that mica products used can still maintain the required mechanical strength at the corresponding temperature. In fact, even under the same temperature and pressure, the material is subjected to different stress methods, and the material requirements for the material are also different. For example: for a vacuum container with a relative pressure of -0.1MPa, the mechanical strength of the mica sheet material is approximately equivalent to that of a container with a relative pressure of 1MPa.

The mechanical strength of any material changes at different temperatures. Therefore, when selecting high-temperature and high-pressure materials, first determine the required mechanical strength, then select materials that can maintain strong strength at working temperature, and then design the corresponding mechanical structure according to the strength and working pressure of the material at working temperature (such as container wall thickness), and the things made in this way can be used according to regulations under high temperature and high pressure.

2. High-temperature resistant mica sheet and mica gasket
In fact, the high-temperature-resistant mica sheet electrical insulation is a mature product after processing, while the mica gasket retains the characteristics of mica and has many different characteristics.

Mica board is a plate-shaped material made of natural mica slag, phlogopite mica paper impregnated with resin and hot-pressed. It has nothing to do with the thickness. The general temperature resistance of mica is 500-1000 °C, and the high temperature resistant mica sheet can reach above 1400 °C. The effect of high temperature resistance is better.

Natural mica gasket is a kind of high temperature resistant insulating material, which can be used for a long time at 800 ℃. It has good mechanical properties, heat resistance and insulating electrical properties, high volume resistivity and good dielectric loss. It is an indispensable product with good practical performance and good price advantage among similar products.

If you want to know more about what are mica sheets used for, please visit our website.

Mica Tape(2024年)

datamica — 2024-04-12T16:21:57+0900

https://www.datamica.com/products/mica-tape

Phlogopite Mica Tape
DataMica’s phlogopite mica tape is a high temperature and fire resistant product which has undergone 76 production control points, failure mode effect analysis and strict pre-delivery quality inspections. As a result, we have created a series of DataMica’s products under the name of HiResistTM brand.

As one of the mature mica tape suppliers and mica tape manufacturers, we have carried out research & development and testings of electrical, thermal, mechanical as well as other technical parameters of HiResistTM brand phlogopite mica insulation tape in our Shanghai R&D center. These mica insulation tapes are produced in China’s Sichuan Ya’an Mica Co. Ltd, and finally delivered to the world’s customers who pursue product quality in the fields of fire resistant optical fibers, control Cable, EV BUSBAR and high temperature insulation applications. We are proud that Prysmian, Nexans, LG and other famous cable companies use our products for their fire-resistant protective materials.

Control of Key Raw Materials for Phlogopite Mica Tape
The production control measures of DataMica’s HiResistTM Phlogopite tape has been taken place from the very beginning, i.e. screening of mica mineral ore scraps. After more than 30 updates of the quality requirements and delivery inspection standards of the mineral ore scraps in Madagascar, Africa, we have formed quality standards of the key raw materials, including sampling methods and standards.

Phlogopite Pulp Quality Control
Phlogopite mineral scraps is delivered to our Ya’an factory after 2 months of sea and land transportation, and then we have to do a warehouse quality inspection.

Afterwards, we, professional in mika tape, start to make phlogopite paper pulp according to the production schedule. In this important step, the scraps will be cleaned by high pressure water jets and remove fine sands which may affect the dielectric strength.

Through our special pulping machine, we crush mica into micron-level thickness, and control the aspect ratio of micron-level mica fragments in order to produce phlogopite paper pulp with perfect aspect ratio.

Production Control of Glass Fiber Reinforced Material for Phlogopite Tape
We have 30 years of experience in mica composite materials. The starting point of our experience was to manufacture glass fiber reinforced materials. As one of the high-quality mica tape insulation suppliers, we have been supplying glass fiber reinforced materials to mica-related manufacturers in China for over 30 years. With Special understanding of reinforcement requirements, we have the best glass fiber cloth design in terms of thread counts. Within one square centimeter, thread counts in both warp and weft directions are major factor which affects the strength of the glass fiber cloth. We use thread counts of 23×11 (warp x weft) for our glassfibre cloth, whereas, most manufacturers use as low as 50% of our thread counts per unit area in order to save costs.

MICA TAPE DATAMICA
Processes of Composite and Cutting of Phlogopite Paper Rolls into Tapes
The composite production line of phlogopite paper and glass fiber cloth developed by us is 40 meters longer than the traditional one in the market. Through sufficient chemical cross-linking reactions with other composite materials, it lays the foundation for us to innovate more new mica cable tape materials.

If you want to know more about mica manufacturing, please visit our website.

Mica Sheet(2024年)

datamica — 2024-04-12T16:21:29+0900

https://www.datamica.com/products/mica-sheet

Mica sheet specification
Mica sheets come in two mineral types of mica, Muscovite and Phlogopite. We, one of the mature mica sheet transparent manufacturers, can deliver both in rigid or flexible sheets, depending on what you intend to use them for. The standard size is 1000 x 1200mm or 1000 x 2400mm.

Typically, mica’s plate-like form lends itself to superior insulation and electrical and chemical resistance. These properties are especially useful when using different types of mica sheets form as a durable reinforcing agent.

Rigid mica sheets
Produced as rectangular board and sheet, rigid mica sheets have several crucial applications, which vary from industrial furnace manufacturing to simple domestic appliances such as hairdryers. Mica sheets for sale provide outstanding electrical insulation under high temperature. For this reason, mica sheets work well as insulation material where heat meets electrical current. Efficient, effective insulation is vital to ensuring that the application operates its best, safe and most cost-effective.

Mica sheets in their rigid form are therefore most suitable for the furnace construction stage, rather than for relining purposes. Mica sheet types are resistant to high temperature cycles, making them well suited to electrically heated items such as toasters, tumble dryers and band heaters.

DataMica, one of professional mica sheet manufacturers, also provides specifically cut and manufactured shapes from rigid high gloss white mica sheet.

mica-sheet-500x500
Flexible mica sheets
In sheet form, flexible mica provides a superior sheathing or covering, and can function as an insulation foil or separator in some applications.

As with rigid mica transparent sheets, we provide a wide range of standard sizes. Flexible mica sheets come in thicknesses between 0.10 and 2mm, depending on the grade you require.

These rectangular mica sheets are available in 1020 mm widths and in various lengths.

Mica sheets for manufacturing solutions
Mica’s broad capabilities as an exceptionally versatile insulation material mean that mica sheets, whether rigid or flexible, are essential to manufacturing in a number of settings, across several sectors and industries.

If you have a manufacturing project, whether it is a foundry, a furnace, a domestic or industrial appliance, mica may just be the component you are missing.

Application of Mica Sheet in Rubber and Plastic(2024年)

datamica — 2024-04-12T16:20:59+0900

https://www.datamica.com/application-of-mica-sheet-in-rubber-and-plastic.html

Mica sheet has the advantages of high strength, high modulus, low thermal expansion coefficient, high thermal conductivity, high temperature resistance, excellent dielectric properties, good chemical resistance, low solubility in water, small friction coefficient and low hardness. An important parameter of a sheet-like reinforcement is its diameter-to-thickness ratio, which relates to the efficiency of stress transfer from the weak polymer matrix to the strong reinforcement.

Due to the low diameter-thickness ratio of mica, a variety of methods for preparing mica sheets with high diameter-thickness ratios have been developed. Practice has proved that mica sheets are the most effective mineral materials that can reduce product warpage and increase stiffness and thermal deformation temperature.

In addition, mica sheet composites can maintain their high modulus without deformation at high temperatures. These properties, coupled with the light weight and low cost of mica sheets, are the goals of today’s industries looking for new materials.

Ⅰ. Mica Sheet Application
Adding mica sheets to rubber can improve the aging resistance of rubber. In the rubber industry, mica sheets can improve the strength of rubber products, stabilize the quality, and achieve the reinforcing performance of semi-reinforcing carbon black. The combination of mica sheets and general-purpose carbon black in chloroprene rubber has a good synergistic effect. Proper mixing can reduce the cost of the rubber and improve the physical and mechanical properties of the rubber.

The mica sheets among mica products manufacturing are anti-friction fillers. The mica sheets in the friction material can not only reduce the friction coefficient but also reduce the wear of the material, thereby increasing the service life of the friction material. At the same time, it improves the oil resistance, water resistance and corrosion resistance of rubber.

Ⅱ. Mica sheets are used in thermosetting plastics
1. Polyester: Mica sheet reinforced polyester resin is mainly formed by spraying method and hand lay-up method. When spray forming, mica sheets are used as high-rigid linings for FRP products and acrylic thermoformed products. During hand lay-up, mica sheets are mainly used as reinforcement materials for the bottom of boats and half-decks of sailboats.

2. Phenolic, epoxy: mica sheets are mainly used in the manufacture of electrical devices that require high electrical performance.

3. A large amount of mica sheets are also added to polyurethane.

Ⅲ. Mica sheets are used in thermoplastics
1. Polyolefin

The effect of high temperature mica sheet reinforced polypropylene is far better than other fillers such as talc, calcium carbonate and wollastonite. Adding 40% mica is equivalent to 30% glass fiber. In addition to the automotive industry as a user, mica sheet reinforced polypropylene is entering the field of household appliances.

2. Thermoplastic polyester

Thermoplastic polyester parts are easy to warp when cooled or used at high temperature. Reinforcing with mica sheets can not only inhibit warping, but also improve various physical properties.

3. Polyamide

Someone compared the reinforcement effect of various fillers with nylon 66 at 40% filling, and found that the tensile strength, bending strength, bending mold and heat distortion temperature of the material were greatly improved by mica sheets.

4. Other thermoplastics

In addition to the above polymers, mica sheets can also improve the strength and stiffness of polyvinyl chloride, polyethersulfone, polyphenylene sulfide, polyvinylidene fluoride and other fluoropolymers, and it has been found that mica sheets can improve the polymerization of styrenics. performance of things. However, mica sheets have an impact on their surface quality and impact resistance. The mica sheet use reinforced plastics is growing rapidly.

As a mica sheet factory, we will do our best to meet all the needs of customers.

Use and Production Technology of Mica Tape(2024年02月08日)

datamica — 2024-01-29T10:56:22+0900

https://www.datamica.com/products/mica-tape

The use of mica tape
Mica tape is actually a very good insulation material. It has excellent fire resistance, so it is basically used in insulation and fire-resistant materials. Just like the commonly used cables, in some special environments, the requirements for cables are relatively high, they need to be fire-resistant and high-temperature-resistant, and mica tape will be added to the cable as insulation material.

In addition, in some high-quality motors, mica tape is also used mainly because of its insulation and high-temperature resistance properties. When using mica tape, it must be closely attached to the wire, that is, the stator winding of the motor, to avoid damage caused by the friction between mica tapes due to the high-speed operation of the motor.

The production process of mica tape
The manufacturing method of mica tape insulation can be divided into wet method and dry method. The wet method refers to the asphalt mica tape bonded with asphalt without drying, with a volatile content of more than 6%. This method has been eliminated. The dry method is to bond the reinforcing material, thin mica or powdery mica paper with adhesive, and then bake it to obtain mica tape-shaped material.

Stick the mica tape on the sheet mica tape sticking machine. Generally, the mica sheets are manually pasted in a fish-scale order on the lower reinforcing material, and then compounded with the upper reinforcing material coated with glue. When reaching a certain size, unload the coil, cut the board, and pack. In the production process, the control of the glue content of the mica tape is very important. When the speed is constant, the glue amount is controlled by controlling the viscosity and solid content of the glue.

The production of powdery mica tape is carried out on the powdery mica tape lamination machine (most of the multi-gel system mica tapes use calcined powdery mica paper, called mature paper or raw paper), first put on the reinforcing material, drive up the glue, and then put it into the oven for drying, then collect the coil, cut the adhesive tape, and pack.

When the powdery mica tape is dried, sufficient time should be given to remove the organic solvent, so that the resin is in a semi-cured state to ensure that the mica tape is easy to untie, does not bubble, and does not become hard. The oven temperature of various epoxy powder mica tapes is divided into three stages: the inlet temperature is low, generally around 80-100℃, to prevent a large amount of solvent volatilization and cause powdery mica paper to bubble; the middle temperature is controlled at 120-160℃; the rear temperature is controlled at 110-150℃.

To ensure that the mica tape has good flexibility and manufacturability, in addition to controlling the drying temperature and speed, it is necessary to control the gel time of the mica tape glue, so that the gel time is stable within a small range.

If you want to know more about mica tape price, please contact us.

There are many mica sheet suppliers in China, but we are one of the best choices for you.

What Are the Types of Mica Tapes with Fire Resistance?(2024年02月07日)

datamica — 2024-01-29T10:53:49+0900

https://www.datamica.com/

Mica tape for fire-resistant cables
Mica tape for fire-resistant cables is a high-performance mica insulation product with excellent high-temperature and flame-retardant properties. The mica tape has good flexibility under normal conditions and is suitable for the main fire-resistant insulation layer of various fire-resistant cables. When exposed to flame, it does not emit harmful smoke, making it not only effective but also safe for use in cables.

Synthetic mica tape
Synthetic mica is a man-made mica with complete crystal structure and larger size, which is synthesized by substituting hydroxyl groups with fluoride ions under normal pressure. Synthetic mica tape is made of synthetic mica as the main material, and then glass cloth is bonded on one side or both sides with adhesive. Synthetic mica tape has the characteristics of natural mica tape, namely small expansion coefficient, high dielectric strength, high resistivity, and uniform dielectric constant. Its main feature is high heat resistance, up to class A fire-resistant grade (950-1000℃).

Synthetic mica tape has a temperature resistance greater than 1000℃, with a thickness range of 0.08 ~ 0.15mm ~ 0.15mm and a maximum width of 920 mm.

Double-sided synthetic mica tape is made of synthetic mica paper as the base material and glass fiber cloth as the double-sided reinforcement material, which is bonded with silicone glue. It is the ideal material for manufacturing fire-resistant wires and cables.

Single-sided synthetic mica tape is made of synthetic mica paper as the base material and glass fiber cloth as the single-sided reinforcement material. It is the ideal material for manufacturing fire-resistant wires and cables with good fire resistance, which are used in key projects.

Golden mica tape
The golden mica series of mica tapes have good fire resistance, acid and alkali resistance, corona resistance, radiation resistance, good flexibility, and tensile strength, and are suitable for high-speed winding. The fire resistance test of the golden mica tape shows that the wire and cable wrapped with the golden mica tape will not breakdown under 840-1000V voltage for 90 minutes.

The golden mica tape is widely used in high-rise buildings, underground railways, large power plants, and important industrial and mining enterprises related to fire safety and firefighting and rescue, such as emergency power supply lines and control lines for firefighting equipment and emergency guidance lights. Due to its low price, it is the preferred material for fire-resistant cables.

DataMica is headquartered in Shanghai and is an innovative medium-sized company in the process of internationalization. The company develops and produces insulation and sound insulation components based on solution-oriented approaches for the automotive and electric vehicle industry. Customized solutions are the core of DataMica’s product portfolio. Please feel free to contact us for more information.

As one of mica suppliers, we can offer sorts of mica products for sale, if you have needs, please contact us.

If you want to know more about mica manufacturing process, please visit our website.

Characteristics and Application Precautions of Synthetic Mica Tape(2024年02月06日)

datamica — 2024-01-29T10:53:08+0900

https://www.datamica.com/products

What is synthetic mica tape? Characteristics of synthetic mica tape
Synthetic mica is a synthetic material that is made by replacing the hydroxyl group with fluoride ions under normal pressure conditions. It has a large size and complete crystal structure. Synthetic mica tape is mica paper made of synthetic mica as the main material, and then glass cloth is attached to one or both sides using adhesive. The glass cloth attached to one side of the mica paper is called “single-sided adhesive tape”, and the glass cloth attached to both sides is called “double-sided adhesive tape”. In the manufacturing process, several structural layers are bonded together, then dried, rolled up, and cut into tapes of different specifications.

In addition to the characteristics of natural mica tape, namely: small expansion coefficient, high dielectric strength, high electrical resistance, and uniform dielectric constant, the main characteristic of synthetic mica tape is its heat resistance, which contains no crystalline water and has a melting point of 1,375℃, ensuring high safety margins and the best high temperature performance, reaching Class A fire resistance level (950-1000℃).

Synthetic mica tape roll can withstand temperatures above 1000℃ and has a thickness range of 0.08-0.15mm, with a maximum supply width of 920mm.

Double-sided synthetic mica tape: a fire-resistant wire and cable made of synthetic mica paper as the base material, glass fiber cloth as the double-sided reinforcement material, and bonded with a silicone resin adhesive. It is the ideal choice of material with the best fire resistance, recommended for key engineering projects.
Single-sided synthetic mica tape: a material for manufacturing fire-resistant wire and cable, with synthetic mica paper as the base material and glass fiber cloth as the single-sided reinforcement material. It has good fire resistance and is recommended for key engineering projects.
Precautions for the use of synthetic mica tape
There are always precautions for using any material, and synthetic mica tape is no exception. Generally, the following should be noted during storage and use:

The storage environment should be dry and ventilated, and the effective storage period is 6 months;
Do not get wet during transportation;
In case of humid weather, pay attention to packaging. After opening the box, pack the remaining mica tape to prevent dust or moisture;
Do not drag the mica tape on the ground to prevent pollution or damage. The winding tension should be evenly controlled, to avoid loose winding or tight rupture, ensuring smooth and not falling off;
When joining mica tape, use a thin adhesive tape to prevent the outer diameter of the joint from being too large, which will affect the extruded insulation;
According to the outer diameter of the conductor and the width of the mica tape, select a suitable winding angle and overlap rate. The winding angle is generally 40% to 50%, and the overlap rate is generally 30% to 50%;
After winding each spool of the conductor, and before extruding the insulation, pack it with suitable packaging materials to prevent the entry of dust, moisture, or damage during transportation and handling.
Other safety precautions should also be taken according to different usage environments.

If you want to know more about mica tape application, please visit our website.

As a mica sheet company, we will do our best to meet all the needs of customers.

What Are the Advantages and Applications of High-Thermal Conductivity Mica Tape?(2024年02月05日)

datamica — 2024-01-29T10:52:27+0900

https://www.datamica.com/what-are-the-advantages-and-applications-of-high-thermal-conductivity-mica-tape.html

High thermal conductivity mica tape and other high thermal insulation materials are important directions for future development. Especially for large high-voltage motors and generators, there is an urgent need in this area.

Advantages of high thermal conductivity mica cable tape:
Thin insulation thickness reduces temperature rise and improves the comprehensive economic and technical indicators of motors. Compared to ordinary mica tape, the thermal conductivity of high thermal conductivity mica tape is doubled, and the temperature rise can be increased by about 10℃. The corresponding motor capacity can be increased by 10% to 15%. It is an ideal material for high-efficiency motors.

Single-sided glass cloth reinforced silicone tape with organic silicone solvent-free impregnating paint has good heat resistance and can reach 200-220 degrees. It is mainly used for high-power traction motors, nuclear power and other special motors.

Porous breathable mica tape is a reinforced tape mixed with glass cloth and non-woven fabric. It can use polyester imide adhesive or epoxy adhesive, has good air permeability, and can adapt to high-voltage and ultra-high-voltage motor insulation. As the insulation thickness of high-voltage and ultra-high-voltage motors reaches more than 3.0mm, the air permeability of mica tape has been put forward higher requirements to improve the VPI impregnation effect.

Application of high thermal conductivity mica tape
High-mica composite tape is a glass cloth reinforced composite tape, suitable for molding or hydraulic molding process. Its outstanding feature is its high mica content, with a mica content of nearly 60% (ordinary composite tape mica content is about 40%). The high mica content makes the mica tape and its formed insulation layer have higher electrical performance; it is mostly used in high-voltage motors and large hydroelectric power.

Single-sided polyester film reinforced adhesive tape with adhesive as polyester imide system has high dielectric strength and excellent process performance. It can be matched with unsaturated polyester imide impregnating paint and epoxy impregnating paint to obtain excellent insulation performance through VPI process, which is conducive to reducing insulation thickness.

As one of mica tape manufacturers, DataMica has more than 30 years of mica product processing experience. We are good at manufacturing ultra-thin mica paper, reinforced mica paper, 3D mica laminates, gold mica ceramic tape, and more mica-based special products. Our core value product is the HiResist mica product used for battery thermal runaway protection. Since 1992, our vision, professional knowledge, and emphasis on customer satisfaction have made us a strong competitor in the high-temperature insulation industry.

DataMica is an innovative mid-sized company that is undergoing international development. The company develops and produces solution-oriented insulation and sound insulation components for the automotive and electric vehicle industry. Welcome to consult.

As a mica products manufacturing company, we will do our best to meet all the needs of customers.

What Are the Characteristics of Unidirectional Synthetic Mica Tape?(2024年02月04日)

datamica — 2024-01-29T10:51:05+0900

https://www.datamica.com/what-are-the-characteristics-of-unidirectional-synthetic-mica-tape.html

What is mica tape?
Mica tape insulation is a type of refractory insulation material that can be classified into motor mica tape and mica cable tape according to its application. According to its structure, it can be divided into double-sided adhesive tape, single-sided adhesive tape, three-in-one adhesive tape, double-film adhesive tape, and single-film adhesive tape.

According to the type of mica used, it can be divided into synthetic mica tape, gold mica tape, and white mica tape. Refractory cable mica tape is a high-performance mica insulation product with excellent high-temperature and flame retardant properties.

Single-sided synthetic mica tape:
It is an ideal material for manufacturing refractory wires and cables with synthetic mica paper as the substrate and glass fiber cloth as the single-sided reinforcement material, and it has good refractory properties.

Synthetic mica is a type of artificial mica with a large size and complete crystal structure, which is synthesized by replacing hydroxyl groups with fluoride ions under normal pressure. Synthetic mica tape is mainly made of synthetic mica paper copied from synthetic mica, and then glass cloth is glued on one or both sides with adhesive.

Gluing glass cloth on one side of the mica paper is called “single-sided adhesive tape”, and gluing on both sides is called “double-sided adhesive tape”. In the manufacturing process, several structural layers are bonded together, then dried in the furnace, and then rolled up and cut into tapes of different specifications.

In addition to the characteristics of natural mica tape, single-sided synthetic mica tape also has the following features:

In addition to small expansion coefficient, high dielectric strength, high resistance, and uniform dielectric constant, its main characteristic is that it has high heat resistance and good refractoriness.
At room temperature, the performance of synthetic mica tape, mica tape, and gold mica tape is in descending order.
At high temperature, the insulation performance of synthetic mica tape, gold mica tape, and mica tape is in descending order.
High-temperature resistance: Synthetic mica tape is fluorine gold mica tape, which does not contain crystal water, has a melting point of 1375 degrees, and has a large safety margin. Gold mica releases crystal water above 800 degrees, and white mica is next at 600 degrees, with poor high-temperature resistance.
We are specialized in manufacturing ultra-thin mica paper, reinforced mica paper, 3D mica laminates, gold mica ceramic tape, and other special mica-based products. Our core value product is the HiResist mica product for battery thermal runaway protection. Since 1992, our vision, expertise, and focus on customer satisfaction have made us a strong competitor in the high-temperature insulation industry.

DataMica is headquartered in Shanghai and is an innovative medium-sized company in the process of international development. The company develops and produces solution-oriented insulation and sound insulation components for the automobile and electric vehicle industries. Feel free to contact us for inquiries.

As a mica manufacturing company, we will do our best to meet all the needs of customers.

In Actual Operating Conditions, Mica Tape Performance Shows Some Variations(2024年02月03日)

datamica — 2024-01-29T10:50:22+0900

https://www.datamica.com/products/mica-tape

Mica tape is a tape-shaped insulation material made by bonding mica paper, alkali-free glass cloth or film reinforcement with different adhesives, and processed by baking, winding, and cutting. It is suitable for the main insulation of large and medium-sized motor and electrical coils with different heat resistance grades. Mica cable tape performance may differ depending on the actual working conditions.

Mica tape for high voltage motors is suitable for vacuum pressure impregnation (VPI) with low mica content and medium mica content and less adhesive. It can be used as the main insulation of high voltage motors and has good electrical and mechanical performance, meeting the requirements of the development of motors towards high voltage levels and high capacity. Most motor manufacturers use low adhesive mica tape.

The adhesive in low adhesive mica tape roll affects the insulation performance of the coil in two ways: the first is the adhesive content, which is generally the less the better. The second is the performance of the adhesive itself. Good mica tape manufacturers use adhesives that can both meet the bonding performance of mica tape and have a low dielectric loss value at high temperatures, while also ensuring good compatibility between mica tape and impregnation resin.

Low adhesive mica tape has sufficient flexibility at room temperature, which is beneficial for wrapping coils. It also has good air permeability and infiltration, which is beneficial for the extraction of air and volatiles in the insulating layer and the impregnation of resin during VPI impregnation, ensuring the overall performance of the coil.

Wind power mica tape is made of mica paper as the base material, and polyethylene terephthalate film, polyimide film or corona-resistant film as the reinforcement material on both sides or one side, with heat-resistant epoxy adhesive or other heat-resistant resin, suitable for large and medium-sized wind power generators.

Polyimide film powder mica tape is a tape-shaped insulation material made by bonding heat-resistant epoxy with mica paper and polyimide film, and processed by baking, winding, and cutting. This mica tape has good flexibility at normal temperature and has superior dielectric performance and higher mechanical strength after wrapping the coil and curing. It is suitable for the main insulation of traction motors with a working temperature of 180-200℃ and insulation of various motors and electrical appliances.

Hydropower mica tape is a tape-shaped insulation material made of powder mica paper as the base material, reinforced with electrical alkali-free glass cloth on both sides and bonded with epoxy adhesive. It has good flexibility at normal temperature and has good electrical and mechanical strength after wrapping the motor coil and molding. It is suitable for the insulation of hydroelectric generators with a working temperature of 155℃ and the molding or hydraulic insulation of high-voltage motor coils.

If you want to know more kinds of mica products, please visit our website.

How to Judge the Quality of Mica Sheets?(2024年02月02日)

datamica — 2024-01-29T10:49:22+0900

https://www.datamica.com/products/mica-sheet

The mica insulation sheet is an electrical insulation material composed of a variety of ingredients, including silica, quartz, garnet, and almandine. Its color ranges from semi-metallic to metallic and it is widely used in daily life. Different types of mica sheets vary in functionality and efficacy.

Sodium feldspar, biotite, and hard green clay can appear in mica sheets. Garnet is rich in Fe and Mg. Si in silica can reach 3.369, which is high voltage combination. Mica has insulation and low loss thermal resistance functions and is also a good blackbody. So, how do we judge the quality of mica sheets? Let’s take a look.

How to judge the quality of mica sheets?
The presence of numerous impurities in the minerals

Mica sheets with different impurities may appear in various colors. The types of impurities can be determined by the color of the mica sheet. Black or green impurities are generally magnetite, which is highly hazardous. Red-brown and light-brown impurities are respectively hematite and limonite, which are less harmful. Among these impurities, the electrical conductivity of magnetite is the largest. So, the insulation performance of white mica containing black magnetite impurities will decrease by 2-3 orders of magnitude.

Large amounts of bubbles on the surface

The bubbles in the mica sheet usually contain water, which is difficult to remove by general drying methods, leading to increased loss of the mica sheet. Especially at high frequencies, these bubbles enhance ionization, significantly increasing loss and even causing dielectric breakdown. If mica sheets containing visible bubbles are used to make capacitors, they may become a hidden danger for capacitor failure. In addition, the existence of bubbles can also cause an increase in the temperature coefficient of the dielectric constant of the mica sheet.

Unexpected factors

The corrugations on the surface of mica sheets primarily affect the temperature coefficient of the capacitance, causing instability in capacitance. Fold lines and cracks can easily cause ionization and affect capacitance. Pinholes and sand eyes affect withstand voltage and are prone to ionization and breakdown, while red and green threads have little impact in general situations, but may affect withstand voltage and stability of capacitance when their area is excessive.

DataMica is an innovative medium-sized company based in Shanghai that is in the process of international development. The company develops and produces insulation and soundproofing components based on solutions for the automotive and electric vehicle industries. Customized solutions are the core of DataMica’s product portfolio. Welcome to inquire.

If you want to know more about how mica sheets are made, please visit our website.

As one of mica sheet suppliers, we will provide sorts of related products for sale, if you are interested, please leave us a message.

A Brief Introduction to Precautions for Replacing Mica Sheets in Water Level Gauge(2024年02月01日)

datamica — 2024-01-29T10:48:10+0900

https://www.datamica.com/products/mica-sheet

What is a mica sheet level gauge?
A waterproof mica sheet level gauge is composed of the main body, seal gasket, anticorrosion gasket, protective gasket, protective tape, plane mirror, buffer gasket, pressure cover, bolt, washer, nut, etc.

The light emitted by the red and green light source is projected into the liquid cavity of the level gauge. In the vapor phase part of the cavity, the red light is projected directly forward, while the green light is absorbed by the wall after being projected obliquely. In the liquid phase part of the cavity, due to the refraction of the water level, the green light is projected directly forward, while the red light is projected obliquely on the wall. Therefore, when viewed directly ahead, it displays red gas and green water.

What requirements must be met for the mica laminate sheet level gauge?
The dimensional tolerance limit must comply with regulations.
Synthetic mica sheets are colorless and transparent, and natural mica sheets can be light-colored and transparent.
The product is not allowed to have cracks, perforations, concave angles, inclusions, etc.
The product surface requirements are flat, clean, free of oil stains, hard texture, and without obvious wrinkles.
The requirements for edge layering, edge cracks, external burrs, sheet thickness, and internal burrs must be within the specified range.
If the thickness is uneven, it must not be greater than 0.02mm.
What should be noted when replacing the metallic mica sheet level gauge?
Prepare the corresponding components in advance, check whether they are intact, and prepare the tools.

The operator should dress neatly, stand on the other end of the pressure cover, and start to loosen the bolts on the other side with the tools. The side close to the body can only be disassembled after confirming that there is no pressure and no gas.
Take off the components, clean the bonding surfaces, and apply lead powder on the bolts.

Install the seal gasket, anticorrosion gasket, protective gasket, protective tape, plane mirror, and buffer gasket correctly. When tightening the bolts, tighten them evenly several times to ensure that the force is even.
Within the range of 6mm from the edge, a small amount of spots, bubbles, and slight wrinkles are allowed to exist in the protective layer, but there must be no fluff, delamination, or serious blockage. Within the usage area, slight knife marks, red-green silk are allowed to exist, but there must be no bubbles or any shaped spots.

DataMica has more than 30 years of experience in mica products manufacturing. We are experienced in manufacturing ultra-thin mica paper, reinforced mica paper, 3D mica laminated board, gold mica ceramic tape, and more mica-based specialty products. Our core value product is the HiResist mica product used for battery thermal runaway protection. Since 1992, our vision, expertise, and focus on customer satisfaction has made us a powerful competitor in the high-temperature insulation industry. Welcome to inquire.

Application of Mica Sheet in Rubber and Plastic(2023年)

datamica — 2023-09-19T17:38:35+0900

https://www.datamica.com/products/mica-sheet

Ⅰ. Application of mica sheet in rubber
Adding mica sheets to rubber can improve the aging resistance of rubber. In the rubber industry, mica sheets can improve the strength of rubber products, stabilize the quality, and achieve the reinforcing performance of semi-reinforcing carbon black. The combination of mica sheets and general-purpose carbon black in chloroprene rubber has a good synergistic effect. Proper mixing can reduce the cost of the rubber and improve the physical and mechanical properties of the rubber.

2. Phenolic, epoxy: mica sheets are mainly used in the manufacture of electrical devices that require high electrical performance.

3. A large amount of mica sheets are also added to polyurethane.

Ⅲ. Mica sheets are used in thermoplastics
1. Polyolefin

2. Thermoplastic polyester

Thermoplastic polyester parts are easy to warp when cooled or used at high temperature. Reinforcing with mica sheets can not only inhibit warping, but also improve various physical properties.

3. Polyamide

4. Other thermoplastics

In addition to the above polymers, mica sheets can also improve the strength and stiffness of polyvinyl chloride, polyethersulfone, polyphenylene sulfide, polyvinylidene fluoride and other fluoropolymers, and it has been found that mica sheets can improve the polymerization of styrenics. performance of things. However, mica sheets have an impact on their surface quality and impact resistance. The use of mica sheet reinforced plastics is growing rapidly.

As a mica manufacturing company, we will do our best to meet all the needs of customers.

Types and Requirements of Mica Products!(2023年)

datamica — 2023-09-19T17:38:11+0900

https://www.datamica.com/products/mica-sheet

Ⅰ. What are mica products?
Mica products are products composed of sheet mica or powder mica paper and various adhesives and reinforcing materials. They are used as the main insulation of high-voltage motor coils and insulation materials for motors and electrical appliances. Mica has high electrical properties, corona resistance, heat resistance, and mechanical properties, so mica products have become the main insulating material in the manufacture of televisions and electrical appliances.

In the early days of the founding of the People’s Republic of China, it was only possible to produce sheet mica products with natural resins—shellac, asphalt and synthetic resin alkyd resins as binders and paper and silk as reinforcing materials.

With the development of the electrical industry, the motor capacity and voltage level continue to increase, and the requirements for mica products are also getting higher and higher. It can produce asphalt, shellac, alkyd, epoxy resin, silicone resin, polyester, polyesterimide, polyimide, etc. as adhesives, and paper, silk, alkali-free glass cloth, film, etc. as reinforcement.

Ⅱ. Types of mica products
Mica products are classified according to their different characteristics according to composition, shape, process characteristics and scope of use. According to their components, they can be divided into sheet mica and powder mica products, and mica products with and without reinforcing materials.

According to its structural shape and process characteristics, it is divided into mica tape, mica board (soft mica board, plastic mica board, commutator mica board, liner mica board, heat-resistant mica board) and mica foil.

According to different molding methods, mika tape can be divided into molded multi-adhesive mica tape and overall impregnated less-adhesive mica tape. Mica is a heat-resistant insulating material, so the heat-resistant grade of the product mainly depends on the adhesive and reinforcing material.

Mica products are a class of insulating materials. Because of its good electrical insulation and high heat resistance, so far, most of the important insulation parts of high-voltage motors are insulated with mica.

Ⅲ. The general requirements for various types of mica products are as follows:
1. The mica tape should have softness and certain tensile strength at room temperature so that it will not break when it is wound. The mica tape used for high-voltage motor coils should have sufficient withstand voltage strength and small dielectric loss, and the thickness of the mica tape should be uniform.

2. The plastic mica sheet has the possibility of being made into complex shapes in the hot state, and the non-deformable soft mica board has good flexibility at room temperature.

3. Liner mica board has a small delamination rate and is suitable for punching or shearing processing to manufacture various gaskets or spacers. The commutator mica plate requires uniform thickness, good tightness, low shrinkage under high temperature and high pressure, no mica slippage and no adhesive flow out, etc.

4. Mica foil should have the same plasticity as molded mica board.

5. Heat-resistant mica board, in addition to good electrical insulation performance and low mechanical strength, its outstanding characteristics are good moisture resistance, less smoke when heated, and can work for a long time at 600 ° C or 700 ~ 1000 ° C for a long time.

Now the price of thin mica sheet is reasonable, anything you need, please contact us.

The Performance and Use of Mica Tape and Analysis of Common Problems(2023年)

datamica — 2023-09-19T17:37:28+0900