1200°C UL94 V-0

Mica sheet series - high-performance thermal and electrical insulation for foundries, appliances, EV battery packs, HV switchgear

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◆ Complete Product Series

Mica Sheet — High-Performance Thermal & Electrical Insulation

Up to 1200°C >25 kV/mm UL94 V-0

High-performance mica sheets engineered for exceptional thermal and electrical insulation. Manufactured from premium phlogopite or muscovite mineral paper impregnated with heat-resistant silicone resin, delivering outstanding stability up to 1000°C. Available in both rigid (structural support) and flexible (wrapping) forms — the ideal solution for induction furnaces, microwave ovens, and aerospace insulation where safety and durability cannot be compromised.

500–1200°C

Temperature

>25kV/mm

Dielectric

<1%

Water Absorption

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Product Classification

Mica Sheet Classification — Three Ways to Choose

Our mica sheets are categorized across three dimensions — by raw material, by processed form, and by application domain — giving you complete flexibility to select the right product for your need.

◆ Dimension 1

By Material Source

Natural Mica Sheet

Sourced directly from natural mica ore. Retains superior dielectric properties of natural mica. Widely used in electrical equipment and electronic components — cost-effective choice with natural material advantage.

Synthetic Mica Sheet

Produced through controlled laboratory synthesis. High purity, stable performance, outstanding heat resistance — maintains excellent properties in extreme temperature environments like industrial furnaces and aerospace equipment.

◆ Dimension 2

By Processed Form

Thin Mica Sheet

Specially peeled to ultra-thin thickness with excellent flexibility and insulation. For precision electronic instruments and space-constrained electrical equipment insulation gaskets.

Mica Board

Mica combined with adhesive resin into rigid or flexible board form. Rigid boards for structural support; flexible boards for complex wrapping shapes.

Mica Tape

Tape form with mica core and reinforcement. Used for wire/cable insulation wrapping and motor winding insulation — enhances cable safety in high-temp environments.

◆ Dimension 3

By Application Domain

Electrical Insulation

Engineered specifically for electrical equipment insulation. Effectively blocks current flow, preventing leakage and short circuits in motors, transformers, HV switchgear.

High-Temperature Use

Outstanding thermal resistance maintaining stable performance in industrial furnaces, electric heating equipment, aerospace high-temp components.

Electronic Components

Meeting precision requirements for electronic components — used as insulating separators in vacuum tubes, capacitors, integrated circuits for reliable operation.

◆ Core Advantages

Three Reasons Engineers Choose SZX Mica Sheets

Our high-temperature mica sheets are made from premium phlogopite (or muscovite) mineral paper impregnated with heat-resistant silicone resin — delivering outstanding stability at up to 1000°C.

🔥

Extreme Heat Resistance

Continuous operation from 500°C (muscovite) to 1000°C (phlogopite) without deformation. Survives extreme thermal cycling.

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Superior Insulation

Dielectric strength >20 kV/mm effectively prevents electrical arcing in high-voltage equipment. Reliable HV protection.

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Safe & Eco-Friendly

UL 94 V-0 flame retardant certified. Low smoke emission and asbestos-free — safe for enclosed industrial and consumer use.

Product Features

Six Properties That Define Our Mica Sheets

Whether natural or synthetic, thin or thick, rigid or flexible — all our mica sheets share these core performance characteristics.

◆ 01

Outstanding Insulation

All SZX mica sheet types inherit mica's exceptional dielectric properties — effectively blocking current transmission and providing reliable insulation for electrical and electronic equipment, reducing fault risk.

◆ 02

Exceptional Heat Resistance

For high-temperature applications, select mica sheets offer strong thermal stability without performance degradation — adapting to severe industrial high-temperature operating conditions.

◆ 03

Reliable Mechanical Properties

Different processing forms deliver corresponding strength and toughness — enduring mechanical stress without damage during processing, installation, and service to ensure structural integrity.

◆ 04

Good Chemical Stability

Resistance to acids, alkalis, and other chemicals — maintains performance stability in corrosive environments, extending service life and reducing replacement frequency from chemical corrosion.

◆ 05

Flexible Custom Processing

Different mica sheet types can be processed into required shapes and sizes based on specific customer requirements — satisfying specialized application needs without customer-side equipment modifications.

◆ 06

Certified Compliance

IEC 60371-3, UL 94 V-0, RoHS, and REACH certifications across all variants. Asbestos-free composition — meets modern environmental and safety standards for global export.

Technical Specifications

Muscovite vs Phlogopite Technical Comparison

Choose muscovite for 500°C continuous / 700°C peak applications, or phlogopite for extreme 750-1000°C continuous / 1200°C peak environments. All batches certified IEC 60371-3, UL 94 V-0, RoHS, and REACH compliant.

Mica Sheet Technical Data

◆ Muscovite & Phlogopite Grades · Rev. 2025

◆ Certified

Property	MuscoviteWhite	PhlogopiteGold · Higher Temp
Heat Resistance (Continuous)	500 °C (932 °F)	750 – 1000 °C
Peak Temperature	700 °C	1200 °C
Dielectric Strength	> 25 kV/mm	> 20 kV/mm
Water Absorption	< 1%	< 1%
Certifications	IEC 60371-3 · UL 94 V-0 RoHS · REACH	IEC 60371-3 · UL 94 V-0 RoHS · REACH

Typical Applications

Four Core Industries That Specify Our Mica Sheets

From foundry coreless induction furnaces to EV battery packs — wherever safety and thermal performance cannot be compromised.

Foundry Industry

Sliding surface insulation for coreless induction furnaces — critical for safe, efficient operation of metal casting and smelting equipment in foundry environments.

Household Appliances

Heating element insulation in toasters, hair dryers, and microwave ovens. Safe, reliable thermal barrier between heating elements and outer casings.

Automotive · EV

Thermal runaway protection and gaskets for electric vehicle battery packs. Critical safety component preventing cascading cell failure in lithium-ion systems.

High Voltage Equipment

Arc chutes, phase separators, and switchgear insulation in HV equipment. Dielectric reliability for safe high-voltage power distribution and control.

Mica Sheet — High-Performance Thermal & Electrical Insulation