Mica Paper

Your Professional Mica Paper Supplier

Hangzhou Weshare Import & Export Co.,Ltd. is a leading Chinese manufacturer and exporter of transformer components, electrical insulation materials and consulting company. Weshare founded in 2005 by one specialized sales in transformer accessories. Most of our products are used in oil and dry transformers, electrical motors, generators and electronic products.Our mission is to ensure appropriate product quality while satisfying the needs of our customers is our prime objective and represents the core principle of our business activities.

Muscovite Mica Paper Insualtion
Product mode：P506
Heat Resistance：500℃(≧)
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Phlogopite Mica Paper Insulation
Insulation Phlogopite Mica Paper is a continuous roll made of muscovite mica, phlogopite mica, synthetic mica or calcined muscovite mica, by pulp making, paper copying, slitting and rewinding...
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Flexible Mica Plates
Type:R-5660-S
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Flexible Mica Insulation
Type:R-5660-S
lexible Mica Plate is a flexible insulation plate made by combining mica paper (usually muscovite mica paper or phlogopite mica paper) with silicone resin adhesive and pressing...
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Calcined Muscovite Mica Paper
Calcined Muscovite Mica Paper is a thin sheet of flexible insulation material made from natural muscovite (usually white phlogopite, i.e. white altered phlogopite) through high temperature...
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Muscovite Mica Paper
Muscovite paper is a sheet-like insulating material made from natural muscovite mica (Muscovite Mica) through high-temperature calcination, layered peeling, and papermaking. Its unique layered...
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Phlogopite Mica Paper
Mica paper is a sheet-like insulating material made from natural phlogopite ore through high-temperature calcination, chemical purification, layered stripping, pulping, and papermaking. It is a...
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insulation Flexible Mica plates
Type:R-5660-S
Flexible mica plate is a high-performance insulating material made of natural mica or synthetic mica.
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Insulation Muscovite Mica Paper
Insulation Muscovite paper is a sheet-like insulating material made from natural muscovite mica (Muscovite Mica) through high-temperature calcination, layered peeling, and papermaking. Its unique...
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Why Choose Us

Quality Assurance

Certified by UL, SGS, and ISO9001, Weshare upholds stringent quality standards.

Extensive Experience

Weshare, since 2005, excels in transformer accessories and electrical engineering.

Export markets

With a strong focus on export markets, we have successfully captured significant market share in East Asia, North Europe, the Middle East, South America, Egypt, and East Africa. Our dedication to ensuring appropriate product quality while meeting customer needs is the cornerstone of our business philosophy.

Product Application

Our company boasts a wide array of products used in oil and dry transformers, electrical motors, generators, and electronic devices.

Product Paramenters

Item	Unit	506
Mass per Unit Area	g/m²	65	120	250	320
Tolerance of Mean	%(≦)	±3	±3	±4	±4
Tolerance	%(≦)	±6	±7	±7	±7
Average Thickness	μm	45	75	150	200
Penetration Time	s(≦)	4	20	45	80
Dielectric Strength	kV/mm	17	17	17	17
Tensile Strength	N/cm(≧)	1.8	3.5	5.5	6
Heat Loss	%	0.4	0.4	0.4	0.4
Conductivity of Water Extract	us/cm(≦)	10	10	10	10
Heat Resistance	℃(≧)	500

Types of Mica Paper

Phlogopite Mica Paper

This type of mica paper is known for its excellent thermal resistance. It can withstand high temperatures, making it ideal for applications in industries where heat is a significant factor.

Muscovite Mica Paper

Muscovite mica paper is prized for its electrical insulation properties. It is often used in electrical equipment and appliances to prevent electrical conductivity and ensure safety.

Advantages of Mica Paper

High Heat Resistance: Mica paper can withstand extreme temperatures without degrading or losing its insulating properties. This makes it indispensable in applications involving heat and fire.

Lightweight: Unlike some other insulation materials, mica paper is remarkably lightweight. This feature simplifies installation and reduces the overall weight of electrical equipment.

Safe Alternative to Asbestos

Asbestos, once commonly used for insulation, is known to pose severe health risks. Mica paper is a safe and asbestos-free alternative, ensuring worker safety and environmental compliance.

Weather Resistance

Mica paper is not affected by external weathering. It remains stable and effective even when exposed to challenging environmental conditions.

Electrical Insulation

Its exceptional dielectric properties make mica paper an excellent choice for electrical insulation, preventing electrical hazards and ensuring the smooth operation of equipment.

Applications of Mica Paper

Insulation

Mica paper is a popular choice for electrical insulation due to its excellent dielectric strength. It is commonly found in transformers, capacitors, and other electrical components.

Gaskets

Mica paper is used to create gaskets for various industrial purposes. It provides a reliable seal against leaks and can withstand the harsh conditions found in many industries.

Induction Furnaces

Mica paper plays a crucial role in induction furnaces in the metal casting industry. Its ability to withstand extreme heat without compromising insulation makes it an invaluable component in this setting.

Fire Safety

Mica paper’s resistance to high temperatures makes it an essential component in fire-resistant materials. It is often incorporated into fire doors, curtains, and insulation to enhance safety.

Production Process and Flow of Mica Paper

The production process of mica paper mainly includes seven steps: crushing, grading, pulping, manufacturing, forming, pressing and drying. The four steps of making, forming, pressing and drying are quite mature in the production of mica paper, so the three processes of mica pulverization, grading and pulping are the most important parts in the whole production process of mica paper. The three processes directly affect the quality and performance of mica paper. Crushing is the basis of mica paper production. Only by adopting appropriate crushing methods can mica scales with smooth surface, uniform particle size and large diameter-thickness ratio be obtained without destroying the physical properties of natural mica. Grading is the key to mica paper production. Grading can remove the particles that do not meet the requirements of paper making and retain the suitable size. Mica pulping is the core of mica paper production. Through grading process, mica powder which meets the requirements of paper making can be obtained. Only through grading pulping in a certain proportion, can the best formulation for high performance mica paper production be obtained and mica paper with high performance be manufactured.

Packing

Muscovite Mica Paper packaged in wooden crates, wooden framed cases or other strong enough materials covered with moisture-proof materialoutside.Gross weight of each package not exceeds 3000kgs.

FAQ

Q: What is mica paper used for?

A: Sheet mica is a versatile and durable material widely used in electrical and thermal insulation applications. It exhibits excellent electrical properties, heat resistance, and chemical stability. Technical grade sheet mica is used in electrical components, electronics, atomic force microscopy and as window sheets.

Q: What is special about mica?

A: Mica's possess perfect basal cleavage, allowing crystals to be split into very thin sheets that are tough and flexible. Mica sheets are also transparent to opaque, resilient, reflective, refractive, dielectric, chemically inert, insulating, lightweight, and hydrophilic.

Q: Why does mica break in sheets?

A: Mica is known for its prominent basal cleavage, allowing it to split along very flat and parallel surfaces, forming sheets or layers. This sheet-like cleavage, known as basal or sheet cleavage, is due to the weak interlayer bonds within the mica crystal structure.

Q: Is mica scratch resistant?

A: Mica laminates are tough and do not scratch or get damaged when use the surfaces every day. These laminates are long lasting and will protect your furniture and countertops, keep them shiny and new for many years.

Q: What is mica paper made of?

A: Mica paper is made by hydraulic separation process using the best quality of mica (muscovite, phlogopite, synthetic or calcined) mica, which is in first stage converted into pulp and then pressed in the form of paper in rolls. Mica paper is mainly used in all kinds of micanite plates and micanite tapes.

Q: What is the dielectric strength of mica paper?

A: Mica is widely known for its high dielectric strength, which is typically around 100–200 MV/cm, depending on the quality and type of mica. A dielectric strength of 0.02 MV/cm (20 kV/cm) is far too low for mica and would not represent its properties as an insulator.

As one of the leading mica paper suppliers in China, we warmly welcome you to wholesale high-grade mica paper made in China here from our factory. All our products are with high quality and competitive price.

generator insulation sleeve