Products
Product Details
Product Details
Rigid Mica Sheet Series
Rigid mica sheet is built on high-quality mica paper with a high-temperature resistant silicone binder, then baked and pressed at high temperature. It combines excellent electrical insulation with heat resistance and mechanical strength.
It is the material of choice for high-temperature insulation in electric heating equipment and for fire protection in traction and energy-storage batteries.
Applications
Where it is used
- Home appliances: heating supports, gaskets and baffles for ovens, hair dryers, irons, toasters and microwave ovens.
- Industrial heating: insulating supports for wire-wound and panel heaters.
- Electrical equipment: commutator insulation segments for motors; high-temperature insulating parts for metallurgy and chemical processing.
- New energy: traction batteries and energy-storage batteries.
Properties
What this grade gives you
- Heat resistance: continuous service at 500–800 °C, intermittent up to 800–1200 °C.
- Electrical insulation: dielectric strength ≥20 kV/mm with excellent arc resistance.
- Mechanical strength: high flexural strength, ≥180 N/mm² for some grades.
- Flammability: rated UL94 V-0.
Specifications
Specifications
Product codes HP5M (muscovite), HP5P (phlogopite) and HP5S (synthetic mica).
| Property | Unit | HP5M Muscovite | HP5P Phlogopite | HP5S Synthetic | Test method |
|---|---|---|---|---|---|
| Mica content | % | ≥90 | ≥90 | ≥90 | GB/T 5019.2 |
| Binder content | % | ≤10 | ≤10 | ≤10 | GB/T 5019.2 |
| Density | g/cm³ | 1.6–2.5 | 1.6–2.5 | 1.6–2.5 | GB/T 5019.2 |
| Temperature resistance, continuous | °C | 500 | 800 | 800 | GB/T 5019.2 |
| Temperature resistance, intermittent | °C | 800 | 1000 | 1200 | — |
| Weight loss at 500 °C | % | ≤1 | ≤1 | ≤1 | GB/T 5019.2 |
| Weight loss at 700 °C | % | ≤2 | ≤2 | ≤2 | — |
| Water absorption | % | ≤1.0 | ≤1.5 | ≤1.0 | GB/T 1034 |
| Flexural strength | MPa | ≥180 | ≥160 | ≥160 | GB/T 5019.2 |
| Flexural strength retained after boiling | MPa | ≥100 | ≥100 | ≥100 | — |
| Dielectric strength | kV/mm | ≥7 | ≥15 | ≥15 | GB/T 5019.2 |
| Volume resistivity | Ω·m | 1.0×10¹⁰ | 1.0×10¹⁰ | 1.0×10¹⁰ | GB/T 31838.2 |
| Thermal conductivity | W/(m·K) | ≤0.3 | ≤0.3 | ≤0.3 | GB/T 29313 |
| Flammability | — | 94V-0 | 94V-0 | 94V-0 | UL |
Notes
Notes on the phlogopite grade
- Fire resistance: withstands 15 minutes in a flame of not less than 1000 °C without burn-through.
- Environmental compliance: meets the limits of clause 4.2 in GB/T 30512—2014.
Special notice: the technical data above are average test results obtained under standard laboratory procedures. Actual performance may vary with application conditions. This datasheet does not constitute a legal guarantee or representation of product fitness; thorough testing before final use is recommended.
Need a sheet size, thickness or drawing-specific part?
Tell us the application, the working temperature and the outline you need, and we will confirm the grade, thickness and machining route.