改性溶聚丁苯橡胶对轮胎胎面胶性能的影响  

Effect of modified solution polymerized styrene-butadiene rubber on properties of tire tread

作　　者：郑涛 邵红旗 ZHENG Tao;SHAO Hong-qi(Shandong Fengyuan Tire Manufacturing Co Ltd,Zaozhuang 277300,China;Shandong Institute of Scientific and Technical Information,Jinan 250101,China)

机构地区：[1]山东丰源轮胎制造股份有限公司,山东枣庄277300 [2]山东省科学技术情报研究院,济南250101

出　　处：《合成橡胶工业》2020年第5期414-418,共5页China Synthetic Rubber Industry

摘　　要：考察了轮胎胎面胶中改性溶聚丁苯橡胶对白炭黑的分散效果、动态力学和力学性能的影响。结果表明,链末端改性的溶聚丁苯橡胶NS 616和链中与链末端改性的溶聚丁苯橡胶LRE-100,可显著减弱胶料中填料的Payne效应,改善填料在橡胶基体中的分散性,降低胶料在动态形变下的生热,其中白炭黑在LRE-100中具有更加优异的分散性能,Payne效应减弱明显。与未改性溶聚丁苯橡胶相比,分子链改性后的溶聚丁苯橡胶的玻璃化转变温度(T g)向高温区域移动,LRE-100可显著提高填料的分散性,使T g处的损耗因子(tanδ)值升高,使得胶料在0℃附近具有较高的tanδ,60℃附近具有较低的tanδ,同时改善了轮胎的制动性能和生热性能。The effects of modified solution polymerized styrene-butadiene rubber(SSBR)on the dispersion,dynamic mechanical and mechanical properties of silica were investigated.The results showed that the modified SSBR NS 616 and SSBR modified in chain and end chain LRE-100 could significantly reduce the Payne effect of fillers,improve the dispersion of fillers in rubber matrix,and reduce the heat build-up of rubber under dynamic deformation.The dispersion of silica in LRE-100 was more excellent,and the Payne effect was weakened ob-viously.Compared with the unmodified SSBR,the glass transition temperature(T g)of SSBR after molecular chain modification moved to high temperature region.LRE-100 could significantly improve the dispersion of fillers and increase the loss factor(tanδ)value at Tg,which made the compound had higher tanδaround 0℃ and lower tanδaround 60℃.At the same time,the braking performance and heat generation performance of the tire were improved.

关 键 词：改性溶聚丁苯橡胶 轮胎 力学性能 白炭黑 PAYNE效应 损耗因子 

分 类 号：TQ333.5[化学工程—橡胶工业]