微波修饰工艺对磁性丁苯橡胶Payne效应及其性能的影响  

Effect of Microwave Modification on Payne Effect and Properties of Magnetic SBR

作　　者：徐建 徐向荣 杨欣霖 刘俊亮[1] 张明[1] XU Jian;XU Xiangrong;YANG Xinlin;LIU Junliang;ZHANG Ming(Yangzhou University,Yangzhou 225002,China)

机构地区：[1]扬州大学化学化工学院,江苏扬州225002

出　　处：《橡胶工业》2022年第5期323-329,共7页China Rubber Industry

基　　金：国家自然科学基金资助项目(51678292)。

摘　　要：为解决磁性丁苯橡胶(SBR)界面问题,对锶铁氧体(SrM)表面进行微波辅助原位修饰,通过改变微波处理工艺条件制备不同的SrM/SBR共混物,研究共混物的Payne效应与磁性SBR的拉伸性能和阻尼性能的关系。结果表明:通过改变微波处理工艺条件可以调控SrM/SBR共混物中铁氧体表面结合橡胶含量,过长的微波处理时间或过大的微波处理功率都会导致SrM/SBR共混物的结合橡胶含量下降;SrM/SBR共混物的Payne效应与其结合橡胶含量和SrM/SBR混炼胶的F_(max)具有较好的相关性,并且与SrM/SBR硫化胶的拉伸强度和阻尼性能的变化趋势基本吻合;微波处理功率为800 W、微波处理时间为6 min时制备的磁性SBR具有最佳的阻尼性能和较大的拉伸强度,相对于未经微波处理的磁性SBR,其损耗因子-温度曲线面积增大7.3%。In this study,the surface of SrM filler was in situ modified by using microwave to solve the interface problem of magnetic SBR,and different strontium ferrite(SrM)/styrene-butadiene rubber(SBR)magnetic composites were prepared by changing microwave treatment process conditions.The relationship between the Payne effect of the SrM/SBR blends and the tensile property and damping property of magnetic SBR was investigated.The results showed that the bound rubber content on the ferrite surface in SrM/SBR blends could be regulated by changing the microwave treatment process conditions,and it was found that excessive microwave treatment time or excessive microwave treatment power would lead to a decrease of the bound rubber content of SrM/SBR blends.The Payne effect of SrM/SBR blends had good correlations with its bound rubber content and F_(max) of SrM/SBR compounds,and the changing trends of the Payne effect of SrM/SBR blends and the tensile strength and damping properties of SrM/SBR vulcanizates were basically consistent.The magnetic SBR prepared when the microwave treatment power was 800 W and the microwave treatment time was 6 min had the best damping property and high tensile strength,and its loss factortemperature curve area increased by 7.3%compared with the magnetic SBR without microwave treatment.

关 键 词：磁性丁苯橡胶 锶铁氧体 微波修饰 PAYNE效应 结合橡胶含量 拉伸性能 阻尼性能 

分 类 号：TQ330.383[化学工程—橡胶工业] TQ333.1