Abstract
The vulcanising response and mechanism of the silicon rubber embedded polyarylacetylene prepolymers (PAAP) were investigated to determine the proper vulcanising conditions that could be used to obtain thermally insulation materials. Mooney viscometer, FTIR and swelling equilibrium experiment were employed to study the vulcanising conditions and mechanism of the composites. The results showed that the scorch time and optimum vulcanising time decreased; the crosslinking density of the composites firstly increased and then decreased, with the increasing of the peroxide content. It was found that the process of peroxide-vulcanised PAAP was a free-radical polymerisation mechanism.
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