Powering Industrial Excellence: Our Mica Expertise Delivers Unmatched Insulation & Heat Resistance

Published time:

2026-03-11 09:43

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Mica is a globally distributed, rare non-metallic mineral renowned for its outstanding electrical insulation and high-temperature resistance, making it a foundational material essential to modern industry. Its applications span from fireproofing and thermal insulation in construction, to cable protection in transportation, and core insulation components in household appliances and new energy equipment, continuously expanding alongside technological advancements.
 
With years of deep industry expertise, we focus on unlocking the full application value of mica. By integrating high-quality global mica resources and leveraging in-depth knowledge of its physical and chemical properties, we have established rigorous manual and mechanical screening processes to ensure every batch of raw mica meets advanced industry quality standards. On this basis, we produce mica paper products in various specifications to meet the diverse needs of clients across industries.
 
Currently, our primary mica raw materials include four categories: muscovite, phlogopite, synthetic mica, and calcined mica.

             Muscovite                                                   Phlogopite                                       Synthetic Mica                                Calcined Mica 

Raw Material TypeAppearance & CharacteristicsCore Application Scenarios
MuscoviteGlassy transparent with pearlescent luster, stable dielectric and bending strengthHigh-end insulation scenarios such as high-voltage electrical equipment and electronic component gaskets
PhlogopiteGreasy luster, slightly transparent, re sistant to high temperatures, acids, and alkalisHigh-temperature extreme conditions in metallurgy, aerospace, and other sectors
Synthetic MicaBright color, high transparency, excellent heat resistance, free of natural impuritiesSpecial high-temperature environments in semiconductors and precision electronics
Calcined Mica Pearlescent luster, reddish-brown, with optimized physical properties after calcinationComplex working conditions such as fire-resistant coatings and sealing materials

 

Core Performance Indicators of Mica Products

Performance IndicatorProduct TypeTechnical Parameters
Dielectric StrengthRigid Mica Board≥16KV/mm (special requirements: ≥20KV/mm)
 Flexible Mica Board≥15KV/mm (high requirements: ≥18KV/mm)
Water AbsorptionRigid/Flexible Mica BoardMeets industry application standards
Bending StrengthRigid/Flexible Mica BoardMeets industry application standards
Flame RetardancyRigid/Flexible Mica BoardUL94 V-0 rating
Fire ResistanceRigid/Flexible Mica BoardNo penetration after 25 seconds of 1400℃ flame exposure
Temperature ResistanceRigid/Flexible Mica BoardMeets industry application standards

Typical Application Scenarios

 
  • Construction: Used in fire door cores and external wall insulation layers to effectively block heat and flame spread, enhancing building fire safety.
  • Transportation: Serves as cable fireproof sheaths and high-speed rail carriage insulation materials to ensure stable electrical systems under extreme temperatures, supporting safe rail transit operations.
  • New Energy: Applied in power battery insulation gaskets and photovoltaic inverter heat dissipation components to improve the reliability and service life of new energy equipment, driving clean energy development.
  • Home Appliances: Used in thermal insulation components of high-temperature household appliances such as microwave ovens and electric ovens to ensure safe and stable operation.

 

Going forward, mica materials will continue to play a critical role in construction, transportation, new energy, and other fields thanks to their excellent insulation, high-temperature resistance, and eco-friendly properties. As technology advances and application scenarios expand, high-quality mica products will further help industries enhance safety performance and energy efficiency, driving industrial upgrading and sustainable development.

 

FAQ

 

Q: What is the difference between natural mica and synthetic mica in use?

 

A: Natural mica (muscovite, phlogopite) is derived from mineral resources with relatively controllable costs, suitable for most conventional insulation and high-temperature scenarios. Synthetic mica is artificially produced with higher purity, better heat resistance, and no natural impurities, making it more suitable for special working conditions with high requirements for purity and stability, such as semiconductors and precision electronics.

 

Q: What temperature range can mica products cover in terms of heat resistance?

 

A: Heat resistance varies by product type. Standard rigid/flexible mica boards meet the high-temperature needs of most industries, while phlogopite and synthetic mica products can adapt to higher temperature environments. Customized selection advice is available based on specific application scenarios.

 

Q: Will the insulation performance of mica products be affected in humid environments?

 

A: Mica products have a water absorption rate that meets industry application standards. Their low water absorption reduces insulation performance degradation in humid environments, maintaining good insulation stability even in scenarios such as outdoor cables and marine engineering.

 

Q: How should different industries choose the right mica raw material?

 

A: Muscovite is preferred for high-voltage electrical and high-end electronic scenarios; phlogopite is recommended for high-temperature extreme conditions in metallurgy and aerospace; synthetic mica is suitable for scenarios with high purity requirements such as semiconductors and precision electronics; calcined mica can be used for fire-resistant coatings and complex sealing conditions. Customized selection services are also available.

 

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