双组分加成型硅橡胶交联固化过程的流变学研究  

Rheological Properties of Two-component Silicon Rubber During Cross-linking by Addition Reaction

作　　者：张欢欢[1,2] 许东华 管东波[3] 姚卫国[3] 石彤非 

机构地区：[1]中国科学科学院长春应用化学研究所、高分子物理与化学国家重点实验室,长春130022 [2]中国科学院大学,北京100049 [3]吉林大学材料科学与工程学院、教育部汽车材料重点实验室,长春130025

出　　处：《高等学校化学学报》2015年第4期788-793,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21274152,51473168,21234007,21174146);国家“九七三”计划项目(批准号:2010CB631100);吉林省科技厅科技发展计划(批准号:20120319);汽车内饰产品搪塑工艺关键技术研究(批准号:2012362)资助~~

摘　　要：采用流变学方法研究了双组分加成型硅橡胶的交联固化过程,并研究了反应温度对反应速率的影响.随着加成反应的进行,体系中的交联程度逐渐增加;反应温度升高,硅橡胶完全交联固化所需时间减少.The kinetic for two-component silicon rubber formed by addition reaction was studied by the rheological method. The influence of reaction temperature on reaction rate was also explored. The Oscillatory frequency has no influence on the study for the cross-linking process of two-component silicon rubber with rheological method. As the addition reaction going on,the cross-linking degree becomes bigger and the properties of system change from liquid properties dominate to solid properties dominate. With reaction temperature increasing,the cross-linking rate of silicon rubber quickens and less time is needed to finish the cross-linking reaction. Based on the relation between cross-linking velocity and the reaction temperature,the apparent activation energy of system can be obtained. Rheological method is suitable for studying the silicon rubber crosslinking process.

关 键 词：硅橡胶 双组分加成反应 交联固化 流变性能 

分 类 号：O631[理学—高分子化学]