顺丁橡胶硫化胶的高温拉伸性能研究  

Study on Tensile Properties of BR Vulcanizates at High Temperature

作　　者：李兴晨 李超芹[1] LI Xingchen;LI Chaoqin(Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学高性能聚合物及成型技术教育部工程研究中心,山东青岛266042

出　　处：《橡胶工业》2020年第3期181-186,共6页China Rubber Industry

基　　金：山东省自然科学基金资助项目(ZR2016XJ001)。

摘　　要：研究炭黑用量和硫化体系[普通硫化(CV)体系、半有效硫化(SEV)体系、有效硫化(EV)体系和过氧化物(DCP)硫化体系]对顺丁橡胶(BR)硫化胶高温拉伸性能的影响。结果表明:不同炭黑用量的BR硫化胶的50%和100%定伸应力均随着温度的升高而逐渐增大,拉伸强度和拉断伸长率均随着温度的升高而逐渐减小,拉伸强度保持率随着炭黑用量的增大而增大;各种硫化体系的BR硫化胶的50%和100%定伸应力均随着温度的升高而逐渐增大,拉伸强度和拉断伸长率均随着温度的升高而逐渐减小;过氧化物硫化体系的BR硫化胶的拉伸强度较小,但高温下的拉伸强度保持率较大。The effects of carbon black content and vulcanization system[conventional vulcanization(CV)system,semi-effective vulcanization(SEV)system,effective vulcanization(EV)system and peroxide(dicumyl peroxide)vulcanization system]on the high temperature tensile properties of butadiene rubber(BR)vulcanizates were investigated.The results showed that,with the increase of the temperature,the modulus at 50% and 100% elongation of BR vulcanizates with different carbon black content increased,the tensile strength and elongation at break decreased,and the tensile strength retention rating was enlarged with the increase of carbon black content.With the increase of the temperature,the modulus at 50% and 100% elongation of BR vulcanizates with all kinds of vulcanization system increased,and the tensile strength and elongation at break decreased.The tensile strength of BR vulcanizates with peroxide vulcanization system was lower compared with that of the BR vulcanizates with any other vulcanization system in this study,but the retention rate of tensile strength was larger at high temperature.

关 键 词：顺丁橡胶 炭黑 硫化体系 高温拉伸性能 

分 类 号：TQ333.2[化学工程—橡胶工业]