不同硫化体系天然橡胶阻尼减震材料的硫化动力学及性能研究  

Research on Curing Kinetics and Properties of NR Damping Material Cured with Different Vulcanization Systems

作　　者：张晓林 梁栋 赵树高[1] ZHANG Xiaolin;LIANG Dong;ZHAO Shugao(Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《橡胶工业》2018年第8期845-849,共5页China Rubber Industry

摘　　要：研究硫黄和促进剂用量对高阻尼天然橡胶胶料硫化特性的影响,并通过非线性拟合探讨硫化体系对硫化胶力学性能的影响。结果表明:随着硫黄用量的减小,硫化前驱体形成交联键的反应活性和交联键降解速率均是先增大后减小,力学强度下降,阻尼性能提高;随着促进剂/硫黄用量比的增大,硫化前驱体形成交联键的反应活性提高,交联键降解速率减小,力学强度提高,阻尼性能下降。The effects of addition level of sulfur and accelerator on the cure characteristics of high damping NR were investigated,and the effect of vulcanization systems on the mechanical properties of the vulcanizate was investigated by nonlinear curve fitting. The results showed that,as the addition level of sulfur decreased,the reactivity of precursors forming crosslink bonds in the vulcanization and the degradation rate of crosslinked bonds increased first and then decreased,the mechanical strength decreased,and damping property was improved. As the blend ratio of accelerator/sulfur increased,the reactivity of precursors forming crosslink bonds in vulcanization increased,the degradation rate of crosslinked bonds decreased,the mechanical strength was improved,and damping property decreased.

关 键 词：天然橡胶 硫化体系 硫黄 促进剂 硫化反应动力学 物理性能 阻尼性能 

分 类 号：TQ330.385[化学工程—橡胶工业] TQ332