交联密度对丁腈橡胶性能影响的分子模拟  

Molecular simulation of effect of cross-linking density on properties of nitrile rubber

作　　者：何诗瑶 王慧明[1] 王世杰[1] 崔剑征 HE Shi-yao;WANG hui-ming;WANG Shi-jie;CUI Jian-zheng(School of Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学机械工程学院,沈阳110870

出　　处：《合成橡胶工业》2021年第5期379-383,共5页China Synthetic Rubber Industry

基　　金：辽宁省教育厅科技计划项目(LGD 2019010)。

摘　　要：基于分子动力学建立了交联密度分别为0、10%、15%和20%的丁腈橡胶(NBR)模型,预测了不同交联密度下NBR模型的玻璃化转变温度和力学性能。结果表明,交联密度为0~20%的NBR的玻璃化转变温度随着交联密度的增大而升高,力学性能随着交联密度的增大先增强后减弱。当交联密度为10%时,NBR可获得最优交联网络结构,其力学性能较好。Based on molecular dynamics,nitrile rubber(NBR)models with cross-linking densities of 0,10%,15%and 20%were established,and the glass transition temperature and mechanical properties of the NBR model under different cross-linking densities were predicted.The results showed that the glass transition temperature of NBR with a cross-linking density of 0-20%increased with increasing cross-linking density,and the mechanical property first increased and then decreased with the increase of cross-linking density.When the cross-linking density was 10%,NBR could obtain the optimal cross-linking network structure,and its mechanical properties were better.

关 键 词：分子模拟 丁腈橡胶 交联密度 玻璃化转变温度 力学性能 

分 类 号：TQ333.7[化学工程—橡胶工业]