SSBR/OMMT结构形态和力学性能  

Mophological Structure and Mechanical Properties of SSBR Vulcanizates Filled with Organically Modified Montmorillonite

作　　者：李宏[1] 

机构地区：[1]贵州师范大学材料与建筑学院,贵州贵阳550014

出　　处：《塑料》2017年第1期83-85,89,共4页Plastics

基　　金：贵州省科学技术基金(黔科合J字[2012]2283号);贵州省优秀科技教育人才省长专项资金(黔省专合字(2011)44号)

摘　　要：采用熔融共混方法制备了3种有机蒙脱土(OMMT)/溶液聚合丁苯橡胶(SSBR)复合材料,研究了其结构形态和力学性能。结果表明:低含量的OMMT可提高硫化胶强度,当OMMT添加量为7 phr时,拉伸强度达最大值;双十八烷基二甲基氯化铵改性蒙脱土(DK4)可显著提高硫化胶断裂伸长率,而十八烷基胺(DK1N)、硬脂基二羟基乙基甲基氯化铵插改性蒙脱土(DK2)填充导致断裂伸长率降低。在硫化过程中,熔融共混法制备的剥离混炼胶中蒙脱土片层重新聚集,形成部分插层型结构。Solution-polymerized styrene butadiene rubber （SSBR） filled with different kinds of organic montmorillonites （OMMT） nanocomposites were prepared by melt intercalation approach. The structure and properties of these nanocomposites were analyzed and studied systemically using transmission electron microscopy （TEM）. TEM images revealed that the fillers were well dispersed while at content below 7 phr SSBR/DK4 showed the most excellent intercalation effect. The interaction between SSBR and DK4 were stronger than that of the others＇. The changes of mechanical properties of SSBR vulcanizates filled with with different kinds showed the similar trend. The tensile strength of the vulcanizates could be improved by incorporation of low OMMT contents,and the best reinforcement effect appeared at 7 phr OMMT.

关 键 词：丁苯橡胶 有机蒙脱土 透射电镜 力学性能 

分 类 号：TQ333.1[化学工程—橡胶工业]