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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
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~~
关键词
硅橡胶
双组分加成反应
交联固化
流变性能
Silicon rubber
Two-comporment addition reaction
Cross-linking
Rheological property
