Synthetic mica paper

Synthetic mica paper delivers excellent insulation at extreme temperatures, widely used in high-performance electrical systems.

Product Category:

Mica Paper

Keywords:

Yuefeng Mica

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Description

Commodity name: Synthetic mica paper

Product Overview

Synthetic mica paper is a high-performance insulating material made from artificially synthesized mica crystals (mainly fluorophlogopite) through melting, crystallization, grinding, and papermaking processes. Unlike natural mica paper, it does not contain impurities such as iron oxides and quartz, thus exhibiting excellent consistency in chemical composition and physical properties. Its thin and flexible sheet structure is easy to cut, laminate, and wrap, making it the preferred material for high-precision industrial and electrical applications.

Main Characteristics

Ultra-high Purity : Contains over 99% pure mica crystals with minimal trace elements, ensuring stable insulation performance even in harsh environments.

Excellent Electrical Insulation Performance : Dielectric strength of 25-40 kV/mm, volume resistivity exceeding 10¹⁶ Ω·cm, superior to most natural mica papers in high-voltage insulation.

Excellent Heat Resistance : Remains stable at continuous operating temperatures up to 1000℃, with short-term temperature resistance up to 1200℃, suitable for extreme high-temperature environments.

Chemical Inertness : Resistant to strong acids, strong alkalis, and organic solvents, and is non-hygroscopic, ensuring long-term performance in corrosive or humid environments.

Dimensional Stability : Extremely low thermal expansion coefficient (coefficient ≤8×10⁻⁶/℃), low shrinkage rate, maintaining structural integrity under temperature fluctuations.

Applications

Electrical and Electronic : Used as an insulating layer in high-voltage transformers, capacitors, and inverter systems, ensuring reliable operation of compact, high-power equipment.

Aerospace and Defense : Used in avionics, missile guidance systems, and satellite components, where purity and extreme condition resistance are crucial.

Nuclear Industry : Suitable for insulation in nuclear reactors and radiation shielding equipment due to its low impurity content and radiation resistance.

High-Temperature Electrical Appliances : Used in heating elements, industrial ovens, and thermal management systems, providing insulation without compromising heat resistance.

Technical Parameters:

Nominal Value (g/m²)	Average Tolerance (%)	Individual Tolerance (%)	Air Permeability (S/100ml)	Permeation Time (Time)	Water Extract Conductivity (μS/cm)	Mass Loss (%)	Tensile Strength (N/cm)	Dielectric Strength (KV/mm)
80	±3	±4	≤180	≤8	10	0.4	≥2	≥14
105	±3	±4	≤180	≤8	10	0.4	≥2	≥14
120	±3	±4	≤250	≤16	10	0.4	≥2.5	≥14
130	±3	±4	≤250	≤16	10	0.4	≥2.5	≥14
140	±3	±4	≤250	≤20	10	0.4	≥3.0	≥14
160	±3	±4	≤350	≤20	10	0.4	≥3.0	≥14

Why Choose Synthetic Mica Paper?

The controlled synthesis process eliminates the inherent variability of natural mica, resulting in a material with predictable and consistent performance. Its high purity makes it ideal for applications where even minute impurities can lead to dielectric breakdown or performance degradation. Furthermore, synthetic mica paper avoids the supply chain limitations of natural mica (such as mining restrictions and quality fluctuations), ensuring a stable supply. For industries demanding high reliability, precision, and extreme condition resistance, synthetic mica paper offers a superior alternative to natural mica-based products, reducing the risk of failure and extending equipment lifespan.

Calcined mica paper

Phlogopite mica paper