Other Mica Products

Thin Mica Sheet

The thin mica sheet is composed of Muscovite or Phlogopite mica paper and small amount of heat resistant Silicon binder. It has good properties of electrical and thermal insulation and can retain their properties even after being exposed to heat. It is used for Toasters, hairdryers, electric rice cookers, electric Irons, gasket, microwave ovens, etc.

Characteristics Unit Test Method Muscovite Mica
Type:CM 55

Phlogopite Mica

Type:CP 55
Mica Content % IEC 371-2 > 90 %
Silicone Content % IEC 371-2 <10 %

Thickness

Tolerance(mm)

Average %
IEC 371-2
+/- 5%

Individual +/- 6%
Standard Size mm IEC 371-2

1000 x 600, 1000 x 1200,

1000 x 2400

Density g/cm3 IEC 371-2 2.0 ~ 2.30 2.0 ~ 2.30
Flexural strength N/mm2 ISO 178 ≥180 ≥160

Dielectric strength at 23C

After Heating at 400C /1 Hour&Tested at 23C

After Heating at 600C /1 Hour&Tested at 23C
KV/mm IEC 243 >25

>13

>10
>24

>12

>9
Insulation resistance

at 23 °C

at 400 °C

at 500 °C
Ohm.cm IEC 93

1016

1012

109

1016

1012

109

Resistance to temperature

Continuous

Peak

700 oC

800 oC

800 oC

1000o C

Weight Loss

@ 550 °C for 4 Hrs

@ 700 °C for 4 Hrs

IEC371-2

<1%

<2%

Water Absorption after 24 hrs ISO 62 <1.0 %

Thick Mica Insulation Plate

Muscovite and Phlogopite thick mica insulation plate are designed for use in extreme conditions and have excellent properties like heat retarding, flame resisting, low thermal conductivity, good electrical insulation, high mechanical strength and non-toxic. It is widely used for Arc chutes, Bus bar support, Dynamic braking resistor, induction furnace, resistor heat dissipater etc.

Characterstics Unit Testing Method Muscovite Mica Type : CM 55 Phlogophite Mica Type CP 55
Standard Size mm IEC 371-2 1000 x 600, 1000 x 1200, 1000 x 2400
Desnsity g/cm3 IEC 371-2 2.10∼2.30 2.0∼2.30
Flexural strength N/mm2 ISO 178 ≥230 ≥200

Comprehensive strength

at 20°C

at 250°C

N/mm2 ISO 604

≥400

≥250

≥380

≥240

Dielectric Strength at 23°C

After Heating at 400°C/1 Hour and tested at 23°C

After Heating at 600°C/1 Hour and tested at 23°C

KV/mm IEC243

>25

>13

>10

>24

>12

>9

Insulation Resistence

at 23 °C

at 400 °C

at 500 °C

Ohm.cm IEC 93

10ˆ16

10ˆ12

10ˆ9

10ˆ16

10ˆ12

10ˆ9

Resistence to Temperature Continous

700 °C

800 °C

800 °C

1000 °C

Peak
Thermal Conductivity W/m °C ⊥ to laminate 3.0 3.0
= to laminate 0.30 0.30
Thermal Expansion °C ⊥ to laminate 100 x 10ˆ-6 100 x 10ˆ-6
= to laminate

10 x 10ˆ-6

10 x 10ˆ-6
Weight Loss @ 700 °C for 4 hrs @550 °C for 4 hours IEC 371-2 < 1%
@700 °C for 4 hours < 2%
Water Absorption After 24 hrs ISO 62 < 1.0 %

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