交联剂用量对PMVS/CB复合材料压阻特性的影响  

Effect of Crosslinking Agent Amount on Uniaxial Piezoresistivity of Carbon Black Filled Poly(methyl vinyl siloxane) Conductive Composites

作　　者：陈永良[1] 宋义虎[1] 郑强[1] 章明秋[2] 

机构地区：[1]浙江大学高分子科学与工程学系 [2]中山大学材料科学研究所,广州510275

出　　处：《高等学校化学学报》2006年第5期988-990,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金重点项目(批准号:50133020);国家自然科学杰出青年基金(批准号:50125312)资助

摘　　要：The effect of crosslinking degree on the piezoresistive behavior of carbon black(CB) filled poly(methyl vinyl siloxane)(PMVS) vulcanites under uniaxial compression was studied.The results reveal that increasing the amount of crosslinking agent could weaken the negative pressure coefficient of resistance(NPCR) effect at the late stage of compression and enhance the piezoresistivity intensity at a high stresses.The recovery property of resistance was related to the content of CB,the stress level and the degree of crosslinking.It was proved that repeated compression with the same maximum stress level could improve piezoresistive stability considerably.The effect of crosslinking degree on the piezoresistive behavior of carbon black （CB） filled poly （methyl vinyl siloxane） （PMVS） vulcanites under uni＇axial compression was studied. The results reveal that increasing the amount of crosslinking agent could weaken the negative pressure coefficient of resistance （NPCR） effect at the late stage of compression and enhance the piezoresistivity intensity at a high stresses. The recovery property of resistance was related to the content of CB, the stress level and the degree of crosslinking. It was proved that repeated compression with the same maximum stress level could improve piezoresistive stability considerably.

关 键 词：聚甲基乙烯基硅氧烷 炭黑 压阻特性 交联剂 

分 类 号：O631[理学—高分子化学]