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 Hydrated silica for silicone rubber |
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Technical indexes |
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Model |
SiO2 dry assay % |
Loss on ignition % |
Loss on heat % |
DBP absorption value ml/g |
Specific surface area
m2/g |
Average size um |
PH |
Fe mg/g |
Remark |
SR-05A |
≥99 |
≤5.0 |
5.5-7.5 |
2.3-2.7 |
190-250 |
4.0-6.5 |
6.5-7.0 |
≤210 |
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SR-05B |
≥99 |
≤5.0 |
<2.5 |
2.4-2.8 |
180-250 |
3.0-6.0 |
6.5-7.0 |
≤210 |
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SR-05C |
≥98 |
≤6.0 |
4.0-7.5 |
2.4-2.7 |
170-230 |
5.0-7.5 |
6.5-7.2 |
≤400 |
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SR-05D |
≥98 |
≤6.0 |
4.0-7.5 |
2.4-2.7 |
170-230 |
6.0-9.0 |
6.5-7.2 |
≤400 |
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SR-1 |
≥99 |
≤9.0 |
<2.5 |
2.0-3.0 |
180-250 |
3.0-6.0 |
6.0-7.0 |
≤210 |
surfactant
<4 % |
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As one kind of specialized reinforced filler which is made in precipitation method and surface process,
SF serial hydrated silicas are designed for silicone rubber .
Our SF serial hydrated silicas are better than imported products. |
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| Features |
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◆ White superfine powder has stable quality and good dispersion.
◆ Excellent reinforcement, its silicone rubber products have high strength and good elasticity.
◆ It is transparent, its refractive index (1.45) is the same with crude rubber;its silicone rubber products
have good transparency and mild feeling.
◆SR-05A, SR-05B contain less iron, its silicone rubber products have good color and can resist
yellow stain.
◆Good price. |
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Application range |
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Model |
SR-05A |
SR-05B |
SR-05C |
SR-05D |
SR-1 |
Normal temperature rubber |
++ |
+++ |
+ |
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High temperature rubber |
+++ |
+++ |
++ |
+ |
+++ |
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Remark: +++--best ++--good +--usable
In Normal temperature rubber, SR-05B can be used directly, SR-05A, SR-05C should be hydrated before use, and can be the substitute of fume colloidal silica partly. |
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