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Weak reinforcing filler can also be referred to as inert filler, the silicone rubber reinforcing effect is very small, they are generally not used alone in the silicone rubber, but with white carbon black and used, to adjust the hardness of silicone rubber, to improve the process performance of the rubber and vulcanized rubber oil resistant properties and solvent resistance, reduce the cost of rubber.
Commonly used weak reinforcing agent with diatomite, quartz powder, zinc oxide, ferric oxide, titanium dioxide, zirconium silicate, calcium carbonate and so on.
Use white carbon black, fumed silica, precipitation white carbon black is also available.
White carbon black surface treatment can improve the strength of the silicone rubber vulcanizates and increase the hydrophobicity.
Surface treated with silane coupling agent, eight four methyl siloxane, etc.
It mainly USES the high temperature molding silicone products manufacturer
, the material toughness degree is strong, and rebound strength is high, can be arbitrary winding deformation for a long time, because the silicone material has highly active silicon molecules with tpe elastomer and the pp material compared to its more activity, long service life can be used in a variety of environmental conditions, high and low temperature resistant performance is good.
'A is mainly used for animal feed additive, pig, chicken after launch in 1688, there have been some we would have expected to new customers, such as warren, and research and development institutions plan to use on the crops.
These new application scenarios, gave us a lot of inspiration.
'Evonik specialty chemicals (
The relevant person in charge of co. , LTD. , told reporters today.
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When heated, methyl silicone oil in contact with acid or alkali has certain damage, methyl silicone oil in higher than 200 ℃ is exposed to air, can happen oxidation precipitation corrosive such as formaldehyde low boiling, methyl silicone oil, although not spontaneous combustion under average temperature, but the burning point (
Or contact cause burning, make the space diffuses a lot of cotton quality of silica (
When a fire, can use a wet sack on the sand or pressure out)
In the use of solvents, acetone won the highest concentration of soluble substance (
Weight ratio of about 2%)
And ethanol, water or other medium low concentration of extracts were obtained.
According to the purpose of this study, the acetone is likely to be in the study of 'excessive' ideal solvent.
Silicone tube sample structure is crucial, because the silicone tube sample thickness is thicker, the dissolution rate is lower.
As expected, storage or after sterilization, reduce the dissolution.
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In the field of waterproof plugging, common inorganic silicon materials are: permanent condensate, water permeable crystallization type waterproof material, sodium silicate, etc.
The waterproof mechanism is usually their dehydration or generated in the concrete surface crystal to blocking channels, thus improve the compactness of concrete and the strength, permeability resistance, etc.
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