耐高温硅橡胶实验制备及耐热性能研究  

Study on experimental preparation and thermal properties of heat-resistant silicone rubber

作　　者：卢琴芳[1] 徐常龙[1] 李小兵[1] 张华禄[1] 谢宝华[1] 

机构地区：[1]九江学院化学与环境工程学院,江西九江332005

出　　处：《实验技术与管理》2013年第9期50-52,57,共4页Experimental Technology and Management

基　　金：国家自然科学基金项目(21161009);江西省科技支撑计划项目(2009ZDG01500);2011年九江市科技支撑计划项目

摘　　要：采用混炼技术制备硅橡胶,研究探讨了生胶、耐热添加剂等不同配方和不同工艺条件对硅橡胶性能的影响。结果表明,采用28.8g(乙烯基摩尔分数为0.23)的生胶,加入0.4g白炭黑活化分散剂和10g气相法白炭黑、0.5g氧化铁和0.7g氧化锌的配合物、0.99g耐高温剂、0.4g促进剂DM、0.6g过氧化苯甲酰,混炼至均匀后,放置24h,经过一次硫化(条件:127℃、10.0MPa、6min)和二次硫化(条件:200℃、4h在鼓风烘箱内进行)可得到耐热性能较好的硅橡胶,添加了耐高温剂的硅橡胶的耐热性能显著提高。The heat resistant silicone rubber was experimentally prepared by blending method, the influence of raw rubber, heat stabilizer and process conditions on the heat resistant of silicone rubber was investigated, and the results show that better performance silicone rubber can be got by using 28.8phr of raw rubber,0.4phr of silica activation dispersant and 10phr of fumed silica, 0. 5phr of iron oxide eomplexing with 0. 7phr of zinc oxide1,0.99 phr of high temperature resist agent ,0. 4phr of accelerator DM,0. 6phr of benzoyl peroxide, blending uniformity and staying 24h, after the first vulcanization （condition： 127 ℃× 10.0 MPa×6 min） and the second vulcanization（condition：200 ℃× 4 h at the blast drying oven）. The thermal properties of the heat- resistant silicone rubber can be improved obviously by adding the high temperature resist agent.

关 键 词：硅橡胶 制备工艺 耐热性 配方 

分 类 号：TQ330.7[化学工程—橡胶工业]