硫化硅橡胶交联结构与物理性能关系研究  

The relationship between crosslinked structure and physical properties of silicone rubber vulcanizates

作　　者：何强[1] 贾奇博[1] 卢咏来[1] 张立群[1,2,3] 

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029 [2]北京化工大学教育部纳米材料先进制备技术与应用科学重点实验室,北京100029 [3]北京化工大学碳纤维及功能高分子教育部重点实验室,北京100029

出　　处：《橡胶工业》2010年第5期268-274,共7页China Rubber Industry

基　　金：国家自然科学基金资助项目(50873007);北京市自然科学基金资助项目(2082019);北京市科技新星计划资助项目(2006A15);长江学者和创新团队发展计划资助项目(IRT0807)

摘　　要：研究硫化体系、硫化剂用量、基体硅橡胶相对分子质量和交联密度对硫化硅橡胶硬度、压缩应力和柔顺性的影响。结果表明,随着硫化剂用量的增大,硫化硅橡胶的硬度和压缩应力增大;当基体硅橡胶相同时,采用加成硫化体系制备的硫化硅橡胶柔顺性较采用过氧化物硫化体系更好;当采用加成硫化体系时,基体硅橡胶相对分子质量和硫化胶交联密度越小,硫化硅橡胶的柔顺性越好。The influence of curing system,addition level of curing agent and crosslink density on the Shore A hardness,compression stress and flexibility of silicone rubber vulcanizates was investigated.The results showed that,the Shore A hardness and compression stress of silicone rubber vulcanizates were increased as the addition level of curing agent increased;the flexibility of silicone rubber vulcanizates by using addition-type curing system was better compared with that by using peroxide curing system when silicone matrixes were the same;the flexibility of silicone rubber vulcanizates was better as the molecular weight of matrix rubber and crosslink density were lower when addition-type curing system was used.

关 键 词：硫化硅橡胶 硫化体系 硬度 交联密度 压缩应力 柔顺性 

分 类 号：TQ330.13[化学工程—橡胶工业] TQ333.93