甲基丙烯酸镁补强丁腈橡胶的研究  

作　　者：张映红[1] 王小萍[2] 胡昌飞 贾德民[2] 

机构地区：[1]华南橡胶轮胎有限公司,广州511400 [2]华南理工大学材料科学与工程学院,广州510641 [3]中化国际控股股份有限公司,海南570100

出　　处：《广东橡胶》2012年第3期2-6,共5页Guangdong Rubber

摘　　要：采用甲基丙烯酸镁（MMg）部分替代炭黑，制备了丁腈橡胶复合材料，研究了MMg对NBR／CB复合材料相关性能的影响。结果表明，随着MMg用量的增加，硫化胶中离子交联密度增大，同时也降低了共价键交联密度，加入MMg可形成离子簇结构，限制其周围高分子链的运动，具有交联和增强作用。随着MMg含量的增加，邵A硬度与压缩永久变形都有一定增大，材料的滞后现象加大，通过少量MMg与炭黑的并用，制备出邵A硬度达到86度，压缩永久变形为26％，综合性能优良的橡胶密封材料。the Applying methylacrylic acid magnesium （MMg） partly replace carbon black, preparation of NBR/carbon black composites were studied. The results show that, with the increasing of the content of density of vulcanizates increased, while the the MMg, ion sulfhydryl crosslinking crosslinking density reduced. Ion cluster structure formed after the addition of MMg limits the movement of polymer chain around, with crosslinking and enhance effect. Along with the increase of the content of MMg, shao A hardness and compression permanent deformation are certain increase, material of the lag of increasing phenomenon, through A small amount of carbon black and MMg and, following A hardness of preparation out 86 degrees, compression permanent deformation is 26%, the best comprehensive properties of rubber sealing material.

关 键 词：甲基丙烯酸镁 丁腈橡胶 补强 压缩永久变形 

分 类 号：TQ333.7[化学工程—橡胶工业]