Product Description ：
The special silica powder for coatings and paints is a kind of inorganic non-metallic mineral functional powder material, which is made of natural quartz ore and fused quartz by fine processing such as color separation, magnetic separation, grinding and precision classification. It has fine particles, no large particles, good suspension, narrow particle size distribution, large specific surface area and good anti-sedimentation performance. It also has some characteristics of reinforcing effect, acid and alkali corrosion resistance, poor thermal conductivity, high insulation, low expansion and high purity. acid and alkali corrosion resistance, poor thermal conductivity, high insulation, low expansion and high purity. The addition of silica powder in high temperature resistant coatings (ceramic coatings) can not only increase the compatibility of filling, but also improve the film hardness, enhance the anti-scratch, anti-corrosion and anti-polishing properties of coatings. It also has auxiliary extinction properties. Silica powder for coatings and paints can improve fineness, leveling performance and film hardness, shorten grinding time, water resistance, rust resistance, corrosion resistance, dispersibility of pigments and storage stability of paints.
Application:
It is widely used in decorative coatings, anticorrosive coatings, conductive coatings, rust-proof coatings, high-temperature resistant coatings, temperature-indicating coatings, heat-insulating coatings, fire-proof coatings, waterproof coatings, etc., as well as interior wall coatings, exterior wall coatings, wood coatings, metal coatings, floor coatings, automobile paints, etc.
Main features:
1. Fine particle size, no large particle size, high purity, good whiteness and uniform particle size distribution.
2, low ion content, low conductivity, excellent electrical insulation.
3. Stable chemical properties, no reaction with any other substances except hydrofluoric acid and strong base.
4, good suspension, good settlement resistance.
5, acid and alkali resistance, high temperature resistance, good insulation performance.
6, high wear resistance, improve the resistance to scratch coating.
Technical Data Sheet
|
Item
|
Unit
|
Standard Scope
|
Typical Values
|
|
Appearance
|
-
|
White powder
|
3000mesh
|
|
SiO2
|
%
|
99%-99.8%
|
99.4
|
|
Mean Grain size
|
µm
|
2-8
|
3.082
|
|
Whiteness
|
%
|
90-98
|
93
|
|
Fe2O3
|
%
|
≤0.03
|
0.008
|
|
Conductivity
|
Us/cm
|
5-30
|
16
|
|
PH Value
|
|
6.5-8.0
|
7.2
|
|
Moisture
|
%
|
0.02-0.1
|
0.08
|
|
BET(SSA)
|
㎡/kg
|
7000-10000
|
9926
|
|
Density
|
g/cm3
|
2.65
|
2.65
|
|
Moh's hardness
|
|
6.5-7
|
7
|
|
Melting Point
|
℃
|
1750
|
1750
|
|
We can produce 1250-6000 mesh products with different specifications according to customer requirements.
|
