硫化体系对CR/CM橡胶共硫化特性的影响  

Impact of the Curing System on the Co-Vulcanizing Properties of CR/CM Blends

作　　者：刘世练 苑宾[1] 李荣勋[1] 

机构地区：[1]青岛科技大学高性能聚合物及成型技术教育部工程研究中心,山东青岛266042

出　　处：《世界橡胶工业》2015年第5期1-6,共6页World Rubber Industry

摘　　要：研究了氯化聚乙烯橡胶(CM)的主要硫化体系对氯丁橡胶(CR)的硫化特性的影响,并与金属氧化物(ZnO/MgO)的效果进行对比,发现CR的焦烧时间明显缩短,硫化速度显著提高,硫化体系NA-22(亚乙基硫脲)/S(硫磺)、FSH(三唑二巯基胺盐)和TCHC(复配型交联剂EataMix)都有明显的返原现象。NA-22/S、PT75(噻二唑衍生物类化合物EataVulc)/903(噻二唑衍生物类化合物EataAccel)和TCHC硫化的CR/CM出现明显的硫化不同步现象。DCP(过氧化二异丙苯)/TAIC、FSH和TCY(三巯基均三嗪)硫化的CR/CM,硫化同步性较好。对于纯CR,硫脲类和TCHC硫化胶料的拉伸强度较高,六种硫化体系的硫化胶物理性能都低于金属氧化物硫化胶。共混胶中NA-22/S和TCHC类拉伸强度较高(达22.8 MPa),金属氧化物和TCY拉伸强度较低。NA-22/S、DCP/TAIC、PT75/903、FSH和TCHC硫化的共混胶的力学性能与硫化CR相近,显示出较好的共混性能。The properties of CR prepared by the primary vulcanization system of CM were investigated, and the comparison with a metal oxide was also studied. The results showed that, CR had significantly shorter scorch time and the higher vulcanization rate. NA-22/S, FSH and TCHC vulcanization system had obvious reversion phenomenon. The Vulcanizing processing of CR/CM blends vulcanized by NA-22 / S, PT75/903 or TCHC were not synchronous. Those with DCP/TAIC, FSH and TCY were better in synchronism. For individual CR, NA-22/S and TCHC system had higher tensile strength, and the physical properties of all the six kinds of vulcanized rubber were worse than metal oxide vulcanized one. NA-22/S and TCHC in blends had higher tensile strength（22.8 MPa）, and metal oxides and TCY in blends had lower tensile strength. For NA-22/S, DCP/TAIC, PT75/903, FSH and TCHC, the mechanical properties of vulcanized blends were similar with those of individual CR, and showed good performance.

关 键 词：硫化体系 硫化速率 共硫化 共混胶 

分 类 号：TQ330.385[化学工程—橡胶工业]