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.
作者
张晓林
梁栋
赵树高
ZHANG Xiaolin;LIANG Dong;ZHAO Shugao(Qingdao University of Science and Technology,Qingdao 266042,China)
出处
《橡胶工业》
CAS
2018年第8期845-849,共5页
China Rubber Industry
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
NR
vulcanization system
sulfur
accelerator
curing reaction kinetics
physical property
damping property
