Rigid Mica Sheet

Mica Sheet
Mica Sheets

A rigid Mica sheet is also named mica plate, or 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, Muscovite mica sheet resist 500~700℃, Phlogopite mica resists 750~850℃.

The gray color is Muscovite Rigid Mica Sheet,  Phlogopite Rigid Mica Sheet is light brown and light green color, the white is Synthetic Rigid Mica Sheet. They are widely used as high-temperature electrical insulation materials.

HighMica is a specialized manufacturer and supplier of industrial mica insulation materials. The hard mica sheets can meet high temperature and high voltage insulation material 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 have excellent mechanical strength. That can used as insulation components for high-temp & high-voltage equipment.
  • Excellent insulation fabricated parts for heating elements cards, washers, barriers, or covers. Such as a hair-dryer heating wire holder and so on.
  • Widely used in heating household appliances, equipment, furnaces, motor insulation, transformers power generation and distribution, electric/hybrid vehicles, and so on.
  • The 3D shape mica protection cover is available, that once formed by the mold tool.
Mica Single Hole Fixed Washer
Mica Washer
Mica gaskets
Mica gaskets
Mica Heater
Mica Heater

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 have a tight structure, with no bobbles, or holes. High flexural strength to punch, have a smooth cut edge. 
  • Excellent mechanical strength. Double heating pressing time ensures extremely high density for over-thick mica board, it’s suited for sawing, drilling, grinding, laser, and waterjet cutting methods
  • Mica sheet is distributed evenly, with no impurity, and color and luster are beautiful.
    One-time formed 3D shape by mold tool is available.
  • 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 a rigid mica plate.

Gluing Mica Paper– Pressing & Baking – Cutting and Packing.

Please click here to learn more details about the mica sheet process method.

Package & delivery

Mica sheets packed by PE film, carton box, each box is about 50kgs.

Then about 20 carton boxes/1000kg mica sheets were fixed in wooden pallets.

Wooden pallets size: 1200*1000mm, 2400*1000mm.

Then we have trucks to send the products directly to Shenzhen Port, Shanghai Port…

mica sheet packing

Why buy mica sheets from us?

1. We have 20+ years of manufacturing experience, control the quality of goods and stability, and also provide competitive prices.

2. We are committed to meeting customer requirements, delivering on time, and continuously improving the products and services we manufacture.

3. Our advanced manufacturing equipment and mature and experienced research and development technology team allow us to fully control the production process and product quality.

Customers reviews

I risked trying HighMica as we have a new project need the mica products. I sent them the specs with some details, their technology team provide some suggestions. we received samples soon, after adjust the specifications detail, we are happy with the final quality, I would be happy to recommend them to anyone.
Christine
Christine
Senior Procurement Specialist
I used to bought the mica products from local trader for many years, and while the relationship was initially good. Due to cost pressure and stable supply, we decided to give HighMica a chance with a small order. They deliver on time, have accuracy specification & quality, and also attention to detail.
Bblythe
Bblythe
Assistant Manager