Type：R-5660-G3
The product less than 2.0mm thickness can be formed by stamping. The products larger than 2.0mm shall be processed by turning, milling, drilling and other processes.
Mica Sheet
Your Professional Mica Sheet 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.
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![insulation Mica Plates]()
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![Phlogopite Mica Plate]()
Phlogopite Mica PlateOur sales can serve you:read more
1/Product photos, product production videos, factory production videos can be sent to you
2/Product quality inspection sheets, test reports from third-party... -
![Muscovite Mica Plate]()
Muscovite Mica PlateMica Sheet White comes in the form of rigid laminated sheet after laminating, pressing and baking process, consists of quality muscovite,phlogopite or synthetic mica paper impregnated with high...read more -
![Thin Mica Sheet]()
Thin Mica SheetWe provide four core types of mica products:read more
HP Series (High Performance): Temperature resistance up to 1200°C (military grade), NASA material certification.
EC Series... -
![Heat Resistant Mica Sheet]()
Heat Resistant Mica SheetHP Series (High Performance): Temperature resistance up to 1200°C (military grade), NASA material certification. EC Series (Economical): 30% cost reduction, MOQ of 500 pieces.read more
FC Series... -
![Mica Laminate Sheet Insulation]()
Mica Laminate Sheet InsulationMica laminate sheet insulation comes in the form of rigid laminated sheet after laminating, pressing and baking process, consists of quality muscovite,phlogopite or synthetic mica paper...read more -
![Epoxy Commutator Mica Sheet Insulation]()
Epoxy Commutator Mica Sheet InsulationProduct mode：CD553Mread more
Normal Thickness：0.1mm
Epoxy Commutator Mica Sheet comes in the form of rigid laminated sheet after laminating, pressing and baking process, consists of quality... -
![Mica Plate Insulation]()
Mica Plate InsulationMica Sheet is an insulating material made from natural or synthetic mica as the base material, compounded under high temperature and pressure. It has the characteristics of high temperature...read more -
![Mica Plate Microwave]()
Mica Plate MicrowaveProduct mode：CD553Pread more
Normal Thickness：0.1mm
Our mica sheet for microwave ovens is a heat-resistant, flame-retardant insulation material made from high-purity mica paper and silicone resin,... -
![Thick Mica Plate]()
Thick Mica PlateProduct mode：CD567Mread more
Normal Thickness：0.5mm
We provide various types of Mica Sheet. -
![Electrical Insulation Mica Sheet]()
Electrical Insulation Mica SheetIt has the characteristics of high temperature resistance (800-1000°C), low dielectric loss (<0.002 @ 1 MHz), and high arc resistance (>20 kV/mm). It complies with the UL-94 V0 flame retardant...read more -
![Electrical Mica Sheet]()
Electrical Mica SheetMaterial composition: Phlogopite/Muscovite/Synthetic Mica Thickness: 0.1mm-50mm Color: Gold/White/Transparent Temperature range: 500°C-1000°C Temperature resistance up to 1000°C (ASTM D619...read more
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 Description
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Advantage Dimension |
Technical Characteristics and Data |
Industry Value |
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High - temperature Resistance |
- Continuous operating temperature up to 1000℃, and can withstand 1200℃ for a short time (tested according to ASTM D619). |
Mica Sheet White can prevent materials from deforming at high temperatures, and are suitable for high - temperature environments such as electric heating equipment and engines. |
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Insulation Performance |
- Breakdown voltage ≥20kV/mm (in accordance with IEC 60243 standard). |
Mica plates can ensure the safety of high - voltage equipment, reduce the risk of electric leakage, and are suitable for fields such as new energy batteries and ultra - high - voltage power grids. |
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Thermal Management Efficiency |
- Thermal conductivity of 0.65W/m·K (tested according to ASTM E1461). |
The product can improve heat dissipation efficiency, reduce the operating temperature of equipment, and extend the lifespan of electronic components. |
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Customization Capability |
- Thickness tolerance of ±0.02mm (measured by online laser thickness gauge). |
The product can precisely fit the structure of customers' products, reducing the cost of secondary processing. |
Advantages of Mica Sheet
Excellent Insulation
Mica sheets maintain insulating properties in high temperatures and humid environments, making them ideal for electrical insulation.
High Heat Resistance
They are the preferred material for thermal protection due to their stability at high temperatures.
Corrosion Resistance
Mica sheets can endure acid and alkali environments for extended use without significant chemical changes.
High Physical Strength
They exhibit good stability under tensile and bending stress.
Types of Mica Sheet
Ruby Muscovite
Color ranges from an almost white through pink to a light ruby and into shades of brownish ruby and brown. Ruby Mica has excellent cleavage capabilities permitting it to be split into the thinnest desired film without the risk of cracking.
Green Muscovite
Ranges from light to pale green through yellowish and olive green to a dark green. Color as such has less significant influence on quality. Still ruby Muscovite is generally preferred especially in the higher qualities as it is considered to be superior to green Mica for applications requiring high dielectric strength and low power loss (or high Q).
What Is Mica Sheet Made of
Large 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.
Natural 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 mica sheets of various specifications can be punched according to customer needs.
Main Functions and Applications of Mica Sheets
Electrical Insulation
Mica sheets possess excellent electrical insulation properties, maintaining electrical stability even in high-temperature or high-humidity environments. This makes them an ideal insulating material for high-voltage electrical equipment, transformers, motors, and generators. Mica sheets not only prevent current leakage but also extend equipment lifespan and enhance safety.
High-Temperature Protection
Mica sheets exhibit exceptional heat resistance. Phlogopite can withstand temperatures above 1000℃, while muscovite can tolerate up to about 500℃. This feature makes mica sheets widely used in high-temperature equipment and facilities, such as insulation for heating elements and arc protection components. In high-temperature industries like steel and metallurgy, mica sheets are also employed to protect critical equipment and electronic components from heat.
Corrosion Resistance
Mica sheets are chemically stable and highly resistant to acids and alkalis, making them an effective anti-corrosion material in chemical production. They help protect other materials or equipment from chemical corrosion, extending the equipment's lifespan and improving overall operational safety.
Heat Dissipation and Thermal Management in Electronics
Besides insulation, mica sheets also assist in heat management for electronic components. Due to their layered structure, they can conduct a certain amount of heat while maintaining insulation, making them suitable as thermal management materials in precision electronics. In devices operating in high-temperature environments, mica sheets can effectively dissipate heat and prevent overheating of electronic components.
Building and Decorative Materials
Mica sheets are also used in construction, especially for fireproof and waterproof building materials. Their excellent fire-resistant properties and aesthetic appearance make them ideal for fireproof wall coatings, insulating layers, and wall decorative panels, enabling protective functionality alongside an appealing appearance.
How Mica Sheets Are Made
Step 1: Mica Extraction
The journey to creating mica sheets begins deep within the earth, where mica is carefully extracted from indigenous rock formations. Various extraction methods are employed to harvest mica, ensuring its integrity and quality.
Step 2: Transport and Preparation
After extraction, mica is transported to the manufacturing facility. Here, it undergoes a meticulous process of sorting and grading to ensure that only the best quality mica is used. The sorted mica is then cut into smaller pieces, preparing it for the next phase of production.
Step 3: Understanding Mica’s Structure
Mica possesses a unique flat six-sided monoclinic crystal structure with exceptional cleavage along large surfaces. This allows it to be cleaved into optically flat films effortlessly. While mica in its natural form is often referred to as sheet mica, it’s important to distinguish this from the manufactured mica sheets, which undergo a specific processing to achieve their final form.
Step 4: Grinding Mica
The cut mica pieces are then ground into fine particles. This is achieved using specialized tools such as hammers or micro pulverizing instruments, transforming the solid mica into a fine powder.
Step 5: Creating the Mica Mixture
The ground mica is mixed with water and a colloidal substance to create a smooth mixture. The addition of water and the colloidal agent is critical, as it ensures the mica particles are evenly distributed throughout the mixture.
Step 6: Forming the Sheets
The mica mixture is carefully poured onto a mesh mold. Due to the viscosity of the mixture, it spreads evenly across the mesh, creating a uniform layer. This process is precisely controlled to ensure that each mica sheet achieves the desired thickness.
Step 7: Drying and Final Processing
Once poured, the mica sheet is allowed to dry, solidifying into its final form. After drying, the sheets may undergo further processing, such as cutting to specific dimensions, depending on their intended use.
FAQ
As one of the leading mica sheet suppliers in China, we warmly welcome you to wholesale high-grade mica sheet made in China here from our factory. All our products are with high quality and competitive price.