不同增塑体系对丁腈橡胶老化前后及胶管扣压过程性能的影响  

Effects of different plasticizing systems on engineering properties of NBR before and after aging and tube buckling

作　　者：尤黎明 杜伟 韩笑 董晓坤 邓涛[1] You Liming;Du Wei;Han Xiao;Dong Xiaokun;Deng Tao(School of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,Shandong,China)

机构地区：[1]青岛科技大学高分子科学与工程学院,山东青岛266042

出　　处：《橡塑技术与装备》2021年第6期52-56,共5页China Rubber/Plastics Technology and Equipment

摘　　要：本文主要研究了不同增塑体系对丁腈橡胶老化前后物理机械性能的影响,以热油老化后的丁腈橡胶的应力-应变曲线作为材料参数,考察不同增塑体系对丁腈胶管扣压过程中性能变化的影响;硫化特性实验结果表明:使用DOP或DOA作为增塑剂时,硫化胶转矩差值较大,使用液体丁腈或聚硫橡胶作为增塑剂时,转矩差值相对较低,其中使用聚硫橡胶作为增塑剂时,焦烧时间较短;物理机械性能实验结果表明:使用液体丁腈或聚硫橡胶作为增塑剂时,丁腈橡胶硫化胶耐热空气老化性能保持率相对较高,耐热油老化后质量体积变化率相对较低;仿真计算结果表明:使用DOP或DOA作为增塑剂时,静刚度、应变能密度及节点处Mises应力较大,使用液体丁腈或聚硫橡胶作为增塑剂时,静刚度、应变能密度及节点处Mises应力相对较小。In this paper,the effects of different plasticizing systems on the physical and mechanical properties of NBR before and after aging were studied.The stress-strain curve of NBR after hot oil aging was taken as the material parameter to investigate the effects of different plasticizing systems on the properties of NBR during the buckling process;The experimental results of curing characteristics showed that when DOP or DOA was used as plasticizer,the torque difference of vulcanizate was higher,while when liquid nitrile or polysulfide rubber was used as plasticizer,the torque difference was relatively lower,and when polysulfide rubber was used as plasticizer,the scorch time was shorter;The experimental results of physical and mechanical properties showed that when liquid NBR or polysulfide rubber was used as plasticizer,the retention rate of heat-resistant air aging property of NBR vulcanizate was relatively high,and the change rate of mass and volume after heat-resistant oil aging was relatively low;The simulation results showed that when DOP or DOA was used as plasticizer,the static stiffness,strain energy density and Mises stress at the joint were higher,while when liquid nitrile or polysulfide rubber was used as plasticizer,the static stiffness,strain energy density and Mises stress at the joint were lower.

关 键 词：增塑体系 仿真计算 材料参数 扣压 

分 类 号：TQ330.384[化学工程—橡胶工业]