Effect of Curing Time on Crosslinking Density and Properties of Silicone Rubber
The effect of curing time on the crosslinking density and properties of silicone rubber were studied,and the crosslinking density of silicone rubber at different curing time was calculated u-sing equilibrium swelling method and stress-strain method.The results showed that with the prolong of curing time,the tensile strength and elongation at break of silicone rubber showed a slight down-ward trend,while the tear strength first increased and then decreased,and the hardness remained basi-cally unchanged;The crosslinking density values were consistent with the changes in mechanical prop-erties;After hot air aging,the change rate of tensile strength and elongation at break had significantly decreased,while the change in hardness was basically consistent.
万方数据
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