蒙脱土纳米增强二苯醚亚苯基硅橡胶的阻隔性能研究  

Barrier Effect of Montmorillonitenano-Reinforcing Diphenyl Ether Phenylene Silicone Rubber

作　　者：索军营[1] 李帆[1] 李璐璐[1] 钱黄海[2] 程丽君[2] 

机构地区：[1]成都飞机工业集团有限责任公司,成都610091 [2]北京航空材料研究院,北京100095

出　　处：《航空材料学报》2015年第2期77-82,共6页Journal of Aeronautical Materials

摘　　要：进行有机蒙脱土对二苯醚亚苯基硅橡胶纳米增强改性的研究。利用FTIR,XRD和TEM进行组织结构分析并测试耐辐照、耐液体溶胀和气体阻隔性能。结果表明,钠基蒙脱土(Na-MMT)经插层剂三十六烷基甲基溴化铵处理后,得到有机化蒙脱土(OMMT),OMMT的层间距比Na-MMT提高近65%;OMMT在橡胶复合材料中主要呈现纳米插层结构分布;二苯醚亚苯基硅橡胶纳米复合材料的耐辐照、耐液体溶胀和气体阻隔性能得到明显提高,其原因乃源于蒙脱土片层结构的阻隔性能形成的纳米阻隔墙效应。The structure, barrier effect of montmorillonite reinforcing diphenyl ether phenylene silicone rubber（DEP） were studied by FTIR,XRD, TEM and mechanical properties before and after the radiation. Results show that the organic montmorillonite（OMMT） is obtained after Na-MMT is inserted into the dioctyldecyhrimethylammoninm bromide. Furthermore, the radiation resistance of OMMT/ DEP composites is much better than those of the regular granule filler/DEP composites,and OMMT exists in the form of nano-intercala- tion. The radiation resistance, oil resistance and gas barrier properties of the nano OMMT/DEP composites are remarkably enhanced. The mechanism of multipath effect or nanowalls, which is due to barrier effect of OMMT layers is the profound reason.

关 键 词：蒙脱土 二苯醚亚苯基硅橡胶 耐辐照 插层 阻隔性能 

分 类 号：TQ333.93[化学工程—橡胶工业]