摘要
研究乙烯基硅油的粘度和用量对机械剪切法再生硅橡胶(RSiR)性能的影响。结果表明:随着乙烯基硅油粘度的增大,RSiR胶料的正硫化时间延长,物理性能下降;随着乙烯基硅油用量的增大,RSiR胶料的最大转矩减小,正硫化时间缩短,拉伸强度和拉断伸长率增大;当乙烯基硅油粘度为1Pa·s、用量为10份时,RSiR硫化胶的物理性能较好。RSiR只有一个玻璃化温度(T_g),随着乙烯基硅油用量的增大,RSiR硫化胶的T_g朝低温方向移动,损耗因子降低。加入乙烯基硅油有助于提高RSiR硫化胶的热稳定性。
The effect of the viscosity and addition level of vinyl silicone oil on the properties of re- claimed silicone rubber （RSiR） produced by mechanical shearing was investigated. The results showed that, when the viscosity of added vinyl silicone oil increased,the optimum curing time of RSiR com- vinyl silicone oil increased, the Tg shifted to lower temperature position and the tan8 peak became smaller. Vinyl silicone oil could be used to improve the thermal stability of RSiR vulcanizates.
出处
《橡胶工业》
CAS
北大核心
2013年第10期604-608,共5页
China Rubber Industry
基金
国家自然科学基金资助项目(51103048)
广东省科技计划项目(2010B010900013)
华南理工大学高校基本科研业务费资助项目(2011ZM0128)
关键词
再生硅橡胶
乙烯基硅油
物理性能
reclaimed silicone rubber
vinyl silicone oil
physical property
