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Silicon Dioxide Used in Silicone Rubber
The most widely used in rubber is silica, which mainly plays a reinforcing role in vulcanized silicone rubber. Due to the very flexible molecular chains of silicone rubber and the weak intermolecular interactions, the strength of unreinforced rubber is very weak and has no practical value. It must be reinforced before use.

Rubber reinforced with silicon dichloride has good physical properties and is widely used in medical electronics. Its products involve various departments of medicine, such as craniocerebral surgery, facial features, anesthesia, digestive system, cardiac surgery, abdominal surgery, and urinary and reproductive systems.Rubber medical gloves and disposable rubber shuttle gloves, medical rubber hoses and medical silicone rubber catheters, medical bottle stoppers and artificial silicone rubber organs also belong to medical rubber products. As a medical rubber product, it must meet the requirements of non-toxic, chemically inert, non allergic, non pathogenic, non deformable, easy to process and good anti-aging performance. Silicone rubber can basically meet these requirements.
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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