抗硫化返原剂SR534与PK900在NR中的对比研究  

Comparison Research of Anti-reversion Agent SR534 and PK900 in NR

作　　者：刘桂龙[1] 陈朝晖[1] 王迪珍[1] 周蓬 

机构地区：[1]华南理工大学材料科学与工程学院,广州510640 [2]晴盛橡胶科技有限公司,广州510660

出　　处：《特种橡胶制品》2009年第4期36-39,42,共5页Special Purpose Rubber Products

摘　　要：研究了抗硫化返原剂SR534和PK900在天然橡胶(NR)中采用普通硫黄硫化体系时胶料的硫化特性、力学性能、耐压缩疲劳温升、耐磨耗、耐屈挠龟裂和动态力学性能的对比,并采用平衡溶胀法和化学探测剂法测定了胶料硫化至t90、30min、60min时非多硫键交联密度。当硫化温度为160℃和抗硫化返原剂用量为2份时,硫化曲线和非多硫键交联密度显示含SR534胶料在过硫化阶段生成的C-C交联键多于PK900,抗返原作用更为明显。SR534和PK900都明显提高了硫化至60min时硫化胶的交联密度、力学性能、耐压缩疲劳温升和耐磨耗性能,60℃时的tanδ值较低有利于降低轮胎的滚动阻力。The cure characteristics, mechanical properties,anti-fatigue heat built-up as well as ab rasion resistance of NR with common sulfur curing system were compared with anti-reversion agent SR534 and PK900 in NR with CV system. The density of non-polysulfide bond of the vulcanizates was determined by the equilibrium swelling data and chemical probe at the curing time of t90,30min and 60min. The results showed that at 160℃ ,the amount of SR534 and PK900 were 2 phr, the amount of C-C crosslink bond which was formed during over-cured stage of the compound contained SR534 was larger than that of PK900. Both of SR534 and PK900 improved the crosslink density, mechanical properties, anti-fatigue heat built up and abrasion resistance of the over-cured vulcanizates, while the lower tanδ at 60℃ was beneficial to reduce the rolling resistance of tires.

关 键 词：抗硫化返原剂 SR534 PK900 天然橡胶 

分 类 号：TQ330.38[化学工程—橡胶工业]