Jinsha Precipitated Silica Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of precipitated silica for silicone rubber as filler in China. With abundant experience, we warmly welcome you to buy high quality products made in China here from our factory. Contact us for more details.
Precipitated Silica for Silicone Rubber as filler
| Material: | Silica powder, silicon dioxide ,precipitated silica superfine powder for coating |
|---|---|
| Application: | Paint and pigmeng |
| Certification: | ISO |
| Transport Package: | Valve Plastic Woven Bag, Pallet |
| Specification: | 10kg/bag, 20kg/bag |
| Samples: |
for free |
|---|
Silicon dioxide is a widely used additive in the manufacturing of silicone rubber. It is added to increase the strength and durability of the material. Silicone rubber has weak intermolecular forces, which makes it susceptible to slippage. In its cold state, it can flow slowly, and its tensile and tear strengths are very low. Pure silicone rubber sulfide only has a tensile strength of around 0.35MPa, which is not enough for practical use. This is where silicon dioxide comes in.
Silicon dioxide, also known as silica, is a white, powdery substance that is added to silicone rubber to reinforce its structure. It is added to the rubber mixture during the compounding stage, where it binds with the rubber molecules and improves its mechanical properties. The addition of silicon dioxide increases the tensile strength and tear resistance of silicone rubber, making it more durable and long-lasting.
The benefits of using silicon dioxide in silicone rubber are many. It improves the overall performance of the material, making it suitable for a wide range of applications. It is commonly used in the manufacturing of gaskets, seals, and other products that require high durability and strength. The use of silicon dioxide also increases the resistance of silicone rubber to abrasion, chemicals, and harsh environments.
In conclusion, the addition of silicon dioxide to silicone rubber is essential for enhancing its properties and making it more durable and long-lasting. Silicon dioxide is a cost-effective and versatile additive that significantly improves the performance of silicone rubber, making it suitable for a variety of applications. With the use of silicon dioxide, silicone rubber continues to play a crucial role in industries such as automotive, aerospace, and construction.
Specification:
|
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 |
|
|
Content of Fe 铁含量 |
Mg/kg |
Max.200 |
145 |
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