Rigid Mica sheet is also named mica plate, mica board. It’s made of 90% mica paper bonded with 10% high-temperature silicone resin, heated and pressed to the rigid sheet thickness from 0.1mm ~100mm, the most popular thickness is 0.3~1.5mm
Rigid mica sheet is a kind of high mechanical strength material. Resist Voltage 16KV/mm, and Muscovite mica sheet resist 500~700℃, Phlogopite mica resist 750~850℃
In the photo, the gray color is Muscovite Rigid Mica Sheet, following brown color is Phlogopite Rigid Mica Sheet, and the white is Synthetic Rigid Mica Sheet. They are widely used as the high-temperature electical insulation materials.
Highmica is a specialized manufacturer and supplier of industrial mica insulation materials. The hard mica sheets sold can meet all production needs. If you need to ask for a quote, please click on the link below
Rigid Mica Sheet Application
What are the mica sheets used for? Different thickness mica sheets can be pouched and processed into insulation parts. A thickness lower than 2.0mm, can be pouched to a different shape of mica gasket. A thickness of more than 2.0mm, will process mica parts, process methods such as sawing, drilling & grinding, laser, and waterjet cutting.
- The processed mica gasket or mica parts are USED as supporting insulation for heating elements in electric toasters, hair dryers, irons, curlers, electric hot combs, strip heaters, baseboard heaters, and for gaskets and in other appliances and applications where excellent resistance to moisture and thermal, mechanical, and good electrical properties are required.
- The mica boards with excellent mechanical strength.That can used as insulation components for high-temp & high-voltage equipments.
- Excellent insulation fabricated parts for heating elements cards, washers, barriers or covers. Such as hair-dryer heating wire holder and so on.
- Widely used in heating household appliances,equipments, furnance, motor insulation,transformers power generation and distribution, electric/hybrid vehicles and so on
- The 3D shape mica protection cover are available, that once formed by mold tool
Properties:
- Excellent thermal resistance, muscovite mica resist 500~700℃, Phlogopite mica resist 750~850℃, Synthetic/Muscovite Calcined mica resist more than 1000℃
- Excellent electric insulation, normally the breakdown voltage is more than 16KV/mm.
- The mica sheets are with tight-structure, no bobbles, holes. High flexural strength to punch, have smooth cut edge.
- Excellent mechanical strength. Double heating pressing time ensure extremly high-density for over-thick mica board, it’s suit to sawing, drilling, grinding, laser and waterjet cutting method
- Mica sheet distributed evenly, no impurity, color and luster is beautiful.
One-time formed 3D shape by mold tool is availabe. - Eco-friendly and non-asbestos.
The mica sheet is CERTIFIED by UL(E248686) and in conformity with IEC371-3-3
Rigid mica sheet technical parameters
Type | HP5M | HP5P | HP5S | HP5M-G | HP5P-G | HP5M-L | HP5P-L | Test Method | |
Normal Thickness (mm) | 0.1~3 | 0.1~3 | 0.1~3 | 4-100 | 4-100 | 0.1~3 | 0.1~3 | IEC60371-3-3 | |
Density g/cm3 | 1.7~2.25 | 1.7~2.25 | 1.7~2.25 | 1.7~2.35 | 1.7~2.35 | 1.7~2.25 | 1.7~2.25 | IEC60371-3-2 | |
Mica content % | ≥90 | ≥90 | ≥90 | ≥90 | ≥90 | ≥90 | ≥90 | IEC60371-3-2 | |
Resin content % | ≤10 | ≤10 | ≤10 | ≤12 | ≤12 | ≤8 | ≤8 | IEC60371-3-2 | |
Heat resistant ℃ | Continual | 500 | 700 | 1000 | 500 | 700 | 500 | 700 | – |
Intermittent | 700 | 900 | 1100 | 700 | 900 | 700 | 900 | – | |
Heat Loss | at 500℃ % | ≤1 | ≤1 | ≤1 | ≤2 | ≤2 | ≤1 | ≤1 | IEC60371-3-2 |
at 700℃ % | ≤2 | ≤2 | ≤2 | ≤3 | ≤3 | ≤1.5 | ≤1.5 | IEC60371-3-2 | |
Flexural strength N/mm | ≥160 | ≥150 | ≥160 | ≥180 | ≥180 | ≥150 | ≥150 | GB/T5019 | |
Water absorption 24H/23℃ % | ≤1 | ≤1 | ≤1 | ≤0.5 | ≤0.5 | ≤2 | ≤2.5 | GB/T5019 | |
Dielectric strength KV/mm | ≥20 | ≥19 | ≥20 | ≥20 | ≥20 | ≥18 | ≥18 | IEC60243 at 23 ℃ | |
Standard Size: 1000*600mm, 1000*1200mm, 1000*2000mm, 1000*2400mm
M – Muscovite), P – Phlogopite, S – Synthetic, L – Low Smook and blister-free, G – High Resin, High Strength
Welcome the customized design and inquiry.
Rigid mica sheet processing method
Mica sheets are made of glued mica paper, then stacked in the calculated layer, separated by glass-fiber glass, then heated pressing to rigid mica plate.
Gluing Mica Paper– Pressing & Baking – Cutting and Packing
To know more detail about the mica sheet process method, please click here.
Packaging delivery method
Mica sheet packed by PE film, carton box, each box is about 50kgs.
Then about 20 carton boxes/1000kgs mica sheets were fixed in wooden pallets (Size: 1200*1000mm).
Then we have our own truck to send the products directly to Shenzhen Port, Shanghai port…
mica sheet packing