一个橡胶补强的新观点

A Novel View of Rubber Reinforcement

提出一个观点:在橡胶中填料之间相互作用的强弱可直观地用填料粒子间作用距离的不同来表示,同一种填料体系中,颗粒间存在着由强到弱的多级相互作用,这种多级相互作用距离服从正态分布,橡胶在外力作用下的应力-应变行为和动态性能均与填料颗粒间作用距离在外界应力作用下的变化有关。以此观点为基础,可细致分析并很好地解释应力-应变曲线中应力上翘现象、不同粒径的填料对橡胶材料模量的影响、填充橡胶的伸长率比纯胶大的现象、橡胶材料的疲劳生热问题、周期应力作用下滚动阻力测试中的温升现象以及炭黑补强橡胶的Payne效应。

A novel view is proposed that the interaction distance of particles could be used to visu- ally indicate the strength of filler interaction in rubber matrix. There are multilevel interactions （from strong to weak） among particles. The multilevel interaction distances obeys normal distribution. Me-chanical and dynamic properties of filled rubber are related to the change of the interaction distance of particles under stress. On the basis of this view, it is simple to accurately analyze and explain some phenomenon of filled rubber,such as the strain hardening in the stress-strain curve,the effect of filler on modulus, the effect of filler on elongation, heat build-up of rubber, temperature rise during the roll- ing resistance test,and Payne effect of filled rubber.