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High Purity Precipitated Silica Powder for Silicon Rubber
Product:Precipitated silica(SiO2) for food grade silicone rubber
Item No.:JS-130
CAS. NO.:7631-86-9
Delivery time:20days after receipt of your payment
HS CODE:281122
Silicone rubber is a synthetic rubber with excellent properties such as high temperature resistance, low temperature resistance, aging resistance, and UV resistance. In the production process of silicone rubber, adding an appropriate amount of precipitated silica powder can significantly improve the performance of silicone rubber products. This article will provide a detailed introduction to the role and advantages of precipitated silica in silicone rubber products.
JS-160
|
Test Methods |
Properties |
Units |
Target Values (Spec Limits) |
Actual Values |
|
HG/T3065-2008 |
Loss on drying (2Hrs,105℃)加热减量 |
% |
Max.6.0 |
5.15 |
|
HG/T3066-2008 |
Ignition loss 1000℃ 灼烧减量 |
% |
Max.6.0 |
3.90 |
|
HG/T3072-2008 |
DBP absorption value DBP吸收值 |
cm3/g |
2.3-2.6 |
2.48 |
|
HG/T3067-2008 |
pH value (10%aqueous suspension) pH值 |
- |
6.0-8.0 |
6.58 |
|
HG/T3062-2008 |
SiO2 (Dry Basis) 二氧化硅(干基) |
% |
Min.96 |
98.4 |
|
HG/T3073-1999 |
BET specific surface area BET比表面积 |
m2/g |
140-170 |
148 |
|
Soluble salt (Na2SO4) 可溶性盐 |
% |
Max.0.5 |
0.25 |
The role of precipitated silica in silicone rubber products：
1)Thickening effect: The precipitation method of silica powder has a high specific surface area and porosity, which can effectively improve the viscosity of silicone rubber, increase its filling performance, and make silicone rubber products have better mechanical strength and tear strength.
2)Improving processing performance: The precipitation method of silica powder can reduce the viscosity of silicone rubber, improve its fluidity, facilitate mold filling and processing, and improve production efficiency.
3)Improving wear resistance: Precipitation method silica powder has excellent wear resistance, which can improve the wear resistance of silicone rubber products and extend their service life.
4)Improving heat resistance: Precipitation method silica powder has high thermal stability, which can improve the heat resistance of silicone rubber products and maintain stable performance in high temperature environments.
5)Improving electrical insulation: Precipitation method silica powder has excellent electrical insulation performance, which can improve the electrical insulation performance of silicone rubber products and ensure their safe application in electrical equipment.
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