环氧化天然橡胶对天然橡胶/炭黑复合材料的改性作用  

Properties of NR/Carbon Black Composites Modified by ENR

作　　者：许体文[1] 贾志欣[1] 罗远芳[1] 贾德民[1] 彭政[2] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640 [2]农业部天然橡胶加工重点开放实验室,广东湛江524001

出　　处：《橡胶工业》2014年第4期202-207,共6页China Rubber Industry

基　　金："973"计划前期研究专项基金资助项目(2010CB635109);中国博士后基金资助项目(2012M511554);国家自然科学基金-广东省联合基金资助项目(U1134005)

摘　　要：采用环氧化天然橡胶（ENR）作为界面改性剂,研究其用量对天然橡胶（NR）/炭黑复合材料加工性能、动态力学性能和物理性能的影响.结果表明：少量ENR可以改善NR/炭黑复合材料的加工性能,改善炭黑粒子在橡胶基体中的分散,提高结合胶质量分数,同时改善硫化胶的动态力学性能、物理性能和耐老化性能.当改性剂ENR用量为3～4.5份时,NR/炭黑复合材料的综合性能最佳.橡胶加工分析和动态力学分析结果表明,ENR能够显著提高NR/炭黑复合材料的抗湿滑性能,但滚动阻力略有增大.The influence of the content of ENR on the processability,dynamic mechanical properties and physical properties of NR/carbon black composites were investigated.It was found that the processability of the composites was improved by adding appropriate amount of ENR.ENR acted as a compatibilizer in the composites,the dispersion of carbon black in rubber matrix was improved,the bound rubber content increased,and the dynamic mechanical properties,physical properties and aging resistance of the vulcanizates were improved.When the addition level of ENR was 3 ～ 4.5 phr,the NR/carbon black composites possessed the best comprehensive properties.The test results by RPA and DMA indicated that,the wet skid resistance of NR/carbon black composites could be significantly improved with ENR,but the rolling resistance increased only slightly.

关 键 词：环氧化天然橡胶 天然橡胶 炭黑 改性 性能 

分 类 号：TQ332[化学工程—橡胶工业]