China Mica Powder for Making High Strength Mica Ceramics

moscovite mica for cosmetic white mica supplier high quality competitive price

Product Description

Mica is stratiform mineral ,Its composed of potassium (K), aluminum (AI),magnesium (Mg),Iron(Fe) and lithium(Li).There are different categories of mica, including white mica , phlogopite, biotite and lepidolite (Lithia mica) . white mica is widely used in industry and national defense because it is elasticity, tenacity and insulativity. it is also acid and alkali resistant, and corrosionproof, which can be stripped, with low coefficient of expansion etc.

The Jinli Minerals have successfully developed another category of mica powder, which is smooth on the surface of flakes, thick in layer, regular in shape with strong adhesion and slipperiness, widely used in many Chinese and foreign prestigious enterprises.

Chemical Compositon :

The chemical equation:KAI2(Si3AIO10)(OH.F)2

Chemical
Compositon

SiO2

Al2O3

K2O

Na2O

MgO

Fe2O3

Ti0

S+P

CaO

H2O

Name

Silicon
dioxide

Aluminium
trioxide

Potassium
oxide

Sodium
oxide

Magnesium
oxide

lron
trioxide

Lilanium
dioxide

Sulphur + calcium

Calcium
oxide

Hydrogen
oxide

Content(%)

44-50

20-33

9-11

0.6-1.8

0.32-2

2-4

0.7-1.2

0.02-0.05

0.02-0.77

2.62

Physical Property:

Proprotion
(kg/m3)

Index of
refraction

Brightness

Moisture
content

Sand
content

Thickness

Heat
resistance

Loss in
heating

PH

Oil
absorptivity

Vickers
hardness

280

1.6

45°-75°

↓ 1%

1%

60

↑1000ºC

2.8-3%

7-8

48-500g/100g
powder

2.5-4

transparency

elastic coefficient

106 Pa

71.7-87.5

1475.9-2092.7

(15050-21340 kg/cm2)

The Main Use and Functions:

Mica powder can be used in paint and coating to reduce the damage of ultraviolet rays or other Light and heat damage to the paint film, promote coating acid and alkali. and insulation, and to t= strengthen its durability , freezing resistance corrosion resistance, water resistance etc. it helps to strengthen the adherence to the layer, improve its intensity, brightness, tenacity and Compaction. As a result ,it is conducive to reduce the ventilation ,to prevent speckle and chaps as well as reduce sediment in the paint. As a prior filler in paint, mica powder can be used to substitute some expensive raw materials in the paint so as to reduce the production cost.
1 Mica powder is also the basic raw material for mica ceramics products.
2 Mica powder can be applied in protecting layer of welding rods, conducting wires and electric cables.
3 It can be use as suspended substance in fire-fighting dry powder.
4 It can be taken as a filler , a shelter, a lubricating substance, a drawing of patterns in plastics, rubber, asbestos products and sealing materials.
5 It can also be used as a filler in degreasing agent of cosmetics, in insulating materials of high-frequent electric waves and acid and alkali products.
6 It can be used as coating in models of Cast metal, the brightening material in aluminum and paint in Plating bath.

Mica ceramic made from mica powder is a kind of special engineering material. It is suitable for producing heat-resistant material, insulating material and high temperature mechanical component. It is widely used in the electric and electronic industries. Mica ceramics are usually made by crystalline glass or sintering. But the bending strength of mica ceramics produced by these two methods is not ideal enough. For example, the bending strength of mica ceramics produced by glass crystallization is generally only in the range of 100 ~ 140MPa, and the flexural strength of mica ceramics produced by sintering process is within 120 ~ 130MPa.