氯化聚乙烯橡胶/乙烯-乙酸乙烯共聚物热塑性硫化胶的制备及性能  

Preparation and properties of chlorinated polyethylene rubber/ethylene-vinyl acetate copolymer thermoplastic vulcanizates

作　　者：王利杰[1] 赵静[1] 杜芳林[1] 王兆波[1] 

机构地区：[1]青岛科技大学材料科学与工程学院,山东青岛266042

出　　处：《合成橡胶工业》2012年第6期466-470,共5页China Synthetic Rubber Industry

基　　金：山东省高等学校科技计划资助项目(J 12 LA 15);青岛市科技发展计划资助项目[12-1-4-3-(9)-jch];山东省自然科学基金资助项目(ZR 2012 EMM 002)

摘　　要：采用动态硫化法制备了氯化聚乙烯橡胶(CM)/乙烯-乙酸乙烯共聚物(EVA)热塑性硫化胶(TPV),研究了TPV的应力-应变行为、物理机械性能、微观相态和结晶性能。结果表明,CM/EVA TPV呈现出典型弹性体软而韧的应力-应变行为,当CM/EVA(质量比)为60/40～80/20时,TPV具有良好的综合性能;CM/EVA TPV的拉伸断裂面较平坦,CM分散相粒子外观形貌不规则,平均尺寸为2μm左右;随着CM用量的增加,CM/EVA TPV中EVA结晶衍射峰强度减弱,晶体中的缺陷增多,熔点降低且熔限变宽。The chlorinated polyethylene rubber（CM）/ethylene-vinyl acetate copolymer（EVA） thermoplastic vulcanizates（TPV） were prepared by dynamic vulcanization,the stress-strain behavior,mechanical properties,micromorphology and crystallization behavior of the prepared CM/EVA TPV were investigated.The results showed that the stress-strain curves of the CM/EVA TPV showed the obvious elastomer behavior.When the mass ratio of CM to EVA ranged from 60/40 to 80/20,the TPV had good all-round properties.The fracture surface of CM/EVA TPV was relatively smooth,the vulcanized CM particles,which had irregular shape and the average diameter of 2 μm,dispersed evenly on the surface of TPV.The intensity of diffraction peaks of EVA crystals in TPV weakened with the increase of CM amount and the crystal defects increased,and the melting point of TPV decreased and melting range broadened.

关 键 词：氯化聚乙烯橡胶 乙烯-乙酸乙烯共聚物 动态硫化 热塑性硫化胶 应力-应变行为 物理机械性能 微观相态 结晶性能 

分 类 号：TQ334.9[化学工程—橡胶工业]