NR硫化返原的研究 Ⅱ半有效硫化体系  

Study on Reversion of NR Part 2SemiEV System

作　　者：张祥福[1] 张隐西[1] 朱玉堂[1] 邓淼 

机构地区：[1]上海交通大学高分子材料研究所

出　　处：《橡胶工业》1998年第4期200-204,共5页China Rubber Industry

摘　　要：研究了半有效硫化体系硫化ＮＲ的返原反应，对双（γ三乙氧基硅烷基丙基）四硫化物（Ｓｉ６９）抗返原作用的原因进行了分析。通过测定硫化曲线、物理性能和溶胀指数，考察常见的３种工业化抗返原助剂［Ｓｉ６９，Ｎ，Ｎ′间亚苯基双马来酰亚胺（ＨＶＡ２）和环己烷二硫代硫酸盐二水合物（ＨＴＳ）］对ＮＲ硫化返原反应的抑制效果。实验结果表明，抗返原助剂可改善ＮＲ的热氧化性能；Ｓｉ６９的抗返原效果最好，用量以３份为宜，ＨＶＡ２次之，ＨＴＳ最差。The reversion of NR cured with semiEV system was studied.The effects of 3 commercial anti-reversion agents,i.e. Si69,N,N′mphenylene bismaleimide (HVA2) and cyclohexane dithiosulfate dihydrate (HTS) on the antireversion of NR were investigated by determing curing curves, physical properties and swelling indexes.The results showed that the antireversion agents could improve the thermooxygen aging properties of NR and the order of their effects was Si69>HVA2>HTS;and 3 phr of anti-reversion agent was suitable.

关 键 词：硫化返原 抗返原 助剂 天然橡胶 橡胶 硫化体系 

分 类 号：TQ330.385[化学工程—橡胶工业]