金属氧化物对甲基乙烯基硅橡胶胶料性能的影响  

Effects of Metal Oxides on Properties of MVQ Compounds

作　　者：魏述琨 刘莉[2] 沈梅[1] WEI Shukun;LIU Li;SHEN Mei(Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学高分子科学与工程学院,山东青岛266042 [2]青岛科技大学高性能聚合物研究院,山东青岛266042

出　　处：《橡胶工业》2023年第6期432-437,共6页China Rubber Industry

基　　金：国家自然科学基金资助项目(51972185)。

摘　　要：研究金属氧化物MgO,ZnO,Fe_(2)O_(3)和Al_(2)O_(3)对甲基乙烯基硅橡胶(MVQ)胶料性能的影响。结果表明:金属氧化物种类对MVQ胶料的硫化特性和MVQ硫化胶的拉伸性能影响不大;加入MgO的MVQ硫化胶的压缩永久变形最小(6%),Fe_(2)O_(3)使MVQ硫化胶的压缩永久变形明显增大;加入ZnO和MgO的MVQ硫化胶的耐油性能较好;加入MgO降低了MVQ硫化胶的橡胶分子主链的分解速率,将分解温度提高至647℃;与空白样相比,加入MgO的MVQ硫化胶的最终分解温度上升40℃,耐热性能显著提高;加入MgO的MVQ胶料的综合性能最佳。The effects of metal oxides MgO,ZnO,Fe_(2)O(3)and Al2O3 on the properties of the methyl vinyl silicone rubber(MVQ)compounds were studied.The results showed that the types of metal oxides had little effect on the vulcanization characteristics of the MVQ compounds and the tensile properties of MVQ vulcanizates.The compression set of the MVQ vulcanizate with MgO was the lowest(6%),and the compression set of the MVQ vulcanizate increased significantly with the addition of Fe_(2)O(3).The MVQ vulcanizates with ZnO and MgO had better oil resistance.The decomposition rate of the main chain of the rubber molecules of the MVQ vulcanizate with MgO was reduced,and the decomposition temperature increased to 647℃.Compared with the blank sample,the final decomposition temperature of the MVQ vulcanizate with MgO increased by 40℃,and the heat resistance was significantly improved.The overall properties of the MVQ compound with MgO were the best.

关 键 词：金属氧化物 甲基乙烯基硅橡胶 压缩永久变形 耐油性能 耐热性能 

分 类 号：TQ333.93[化学工程—橡胶工业]