NR/SBR并用胶配比对其硫化特性和力学性能的影响  

Effect of NR/SBR ratio on vulcanization properties and mechanical properties

作　　者：景元蓉 崔子文 雍占福 刘广永[1] JING Yuanrong;CUI Ziwen;YONG Zhanfu;LIU Guangyong(Key Laboratory of Rubber-Plastics,Ministry of Education,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《弹性体》2021年第1期10-13,共4页China Elastomerics

基　　金：山东省自然科学基金项目(ZR2019MEM028);山东省重点研发计划项目(2019GSF109025)。

摘　　要：考察了天然橡胶与丁苯橡胶不同配比对并用胶硫化特性和力学性能的影响。无转子硫化仪的测试结果表明,随着丁苯橡胶的占比增加,最小转矩和最大转矩均变大,且两者差值也随之增大,硫化时间延长,硫化胶的拉伸强度和撕裂强度明显下降,硬度增加;120℃老化后拉伸强度有不同程度的下降,天然橡胶占比越多下降越明显。The effects of different ratios of natural rubber(NR)and styrene butadiene rubber(SBR)on vulcanization properties and mechanical properties were investigated.The test results of moving die rheometer show that with the increase of content of SBR,both the minimum torque and the maximum torque increase,and the difference between them also increases.The vulcanization time increases with the increase of content of SBR.The tensile strength and tear strength of vulcanized rubber decrease obviously with the increase of content of SBR,but the hardness increases.After aging at 120℃,the tensile strength decreases,and with the increase of content of natural rubber decreased more obviously.

关 键 词：天然橡胶 丁苯橡胶 并用胶 结构 硫化特性 力学性能 

分 类 号：TQ335[化学工程—橡胶工业]