在聚丁二烯(PB)胶乳中进行乳液自由基反应,将乙烯基三乙氧基硅烷(VTES)接枝到聚丁二烯分子链上,制备了聚丁二烯/SiO2杂化材料.运用硅含量、交联率、傅立叶变换红外光谱(FT-IR)、热失重分析(TGA)对产物结构进行了表征,考察了产物多种性能的变化情况,并探讨了杂化材料的形成机理.结果表明,VTES通过共价键合在PB链上,并与水解缩合形成的硅核连接,利用率达88.6%;接枝后产物凝胶率提高,分解速率降低,力学性能如门尼黏度、拉伸强度和断裂伸长率均显著改变.
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