异戊橡胶在低温压缩应变下的结晶性能研究  

Study on Crystallization Property of Isoprene Rubber at Low Temperature Compression Strain

作　　者：陈平[1] 王雪飞[1] 宋传江[1] 

机构地区：[1]株洲时代新材料科技股份有限公司,湖南株洲412007

出　　处：《特种橡胶制品》2011年第3期22-25,共4页Special Purpose Rubber Products

摘　　要：研究了温度、压缩应变和时间3个主要因素对异戊橡胶结晶的影响。结果表明,在0℃及-25℃下,胶料低温结晶时的饱和压缩应变为40%;在-40℃下,胶料低温结晶时的临界压缩应变为35%左右。在0℃下,胶料低温结晶发生较为明显的时间区间为2-4 h;在-25℃下,胶料低温结晶发生较为明显的时间区间为4-8 h。在-40℃下,压缩变形量在30%以下将会延迟胶料低温结晶现象的发生,压缩变形量在40%以上时将会诱导低温结晶现象的发生。The effects of temperature,compression strain and time on crystallization of isoprene rubber were investigated.The results showed that the saturated compression strain of isoprene rubber at low temperature crystallization was 40% at 0℃ and-25℃.The critical compression strain of isoprene rubber at low temperature crystallization was about 35% at-40℃.The more obvious crystallization time of low temperature was 2~4 h at 0℃.The crystallization of isoprene rubber was more obvious at-25℃×4~8 h.The low temperature crystallization was postponed when the compressive strain was under 30% at-40℃.The low temperature crystallization was induced when the compressive strain was over 40% at-40℃.

关 键 词：低温结晶 饱和压缩应变 临界压缩应变 压缩永久变形 

分 类 号：TQ333.3[化学工程—橡胶工业]