中文摘要：

采用超支化技术对有机蒙脱土（OMMT）进行改性制备超支化有机蒙脱土（HOMMT）,并制备HOMMT/甲基乙烯基硅橡胶（MVQ）纳米复合材料,对其性能进行研究。结果表明,HOMMT呈剥离纳米片层结构,与OMMT相比,HOMMT耐热性能提高;随着HOMMT用量的增大,HOMMT/MVQ复合材料拉伸强度减小;与MVQ硫化胶相比,当HOMMT用量为1份时,HOMMT/MVQ纳米复合材料拉伸强度提高了28%,拉断伸长率提高了67%,起始降解温度升高了25℃。

英文摘要：

A hyperbranched organic montmorillonite（HOMMT） was prepared from modified organic montmorillonite（OMMT） by using hyperbranched technique,then HOMMT/methyl vinyl silicone rubber（MVQ） nanocomposites were prepared,and their properties were investigated.The results showed that,HOMMT exhibited exfoliated and nano-scale structure,and the heat resistance of HOMMT was better compared with OMMT was high;the tensile strength of HOMMT/MVQ composite decreased as the addition level of HOMMT increased;the tensile strength and elongation at break of HOMMT/MVQ composite loaded 1 phr HOMMT was improved by 28% and 67% respectively,and the initial thermal degradation temperature was increased by 25 ℃ when compared with MVQ vulcanizate.