HEAT STABILITY IN FLUOROSILICONES.
ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)
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Fluorosilicones are less heat stable than conventional silicones because a they are more likely to revert to low molecular weight cyclic products and b they are more susceptible to oxidation. Reversion is promoted by base catalyst residues from the polymerisati0n process, but the effect can be minimised by the use of compounding ingredients and vulcanising reagents. Oxidation leads to cross-linking and in certain circumstances this can mask the effects of reversion, in practice this high rate of crosslinking will often be a disadvantage and should be suppressed by the use of chemical additives. Author
- Organic Chemistry
- Elastomers and Rubber