石墨烯复合硫化丁苯橡胶摩擦学性能模拟分析

Simulation Analysis of Tribological Properties of GNS—S/SBR

建立硫化丁苯橡胶和石墨烯复合硫化丁苯橡胶两种材料的分子动力学模型,分析石墨烯复合硫化丁苯橡胶的摩擦学性能,研究石墨烯和硫化交联共同作用对丁苯橡胶摩擦特性的影响。结果表明,石墨烯的引入能够降低丁苯橡胶分子链的活动性,提高硫化丁苯橡胶的刚性,阻止橡胶原子向摩擦界面移动,降低摩擦界面处的温度,减缓橡胶机械性能的恶化,从而提高硫化丁苯橡胶的抗剪切性能和摩擦特性。

The molecular dynamics models of S/SBR and GNS-S/SBR were established,the tribological properties of GNS-S/SBR were analyzed,and the impact of cross-linkage co-action of graphene and vulcanization on the tribological properties of SBR was studied.The results show that the introduction of graphene can reduce the mobility of molecular chains of SBR,increase the rigidity of S/SBR,prevent rubber atoms from moving to the friction interface,reduce the temperature at the friction interface,and slow down the deterioration of the mechanical properties of rubber,thereby improving shear resistant and friction properties of S/SBR.