改性氧化石墨烯/天然橡胶复合材料的制备及性能研究  

Preparation and Properties of Modified Graphene Oxide/NR Composites

作　　者：崔怡雯 赵贵哲[1] 刘亚青[1] 张志毅[1] CUI Yiwen;ZHAO Guizhe;LIU Yaqing;ZHANG Zhiyi(Key Laboratory of Functional Nanocomposites of Shanxi Province,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学纳米功能复合材料山西省重点实验室,山西太原030051

出　　处：《橡胶工业》2022年第4期256-260,共5页China Rubber Industry

摘　　要：通过水溶性2-巯基-1-甲基咪唑(MMI)有机改性(还原)氧化石墨烯(GO)制备MMI改性GO(MMI-GO),同时将抗坏血酸(VC)还原GO(rGO)作为对比试样,通过胶乳共混法制备GO/天然橡胶(NR)复合材料,研究GO用量对复合材料性能的影响。结果表明:MMI成功地改性了GO;随着GO用量的增大,GO/NR复合材料的硬度、撕裂强度和热导率增大;与rGO/NR复合材料相比,MMI-GO/NR复合材料的交联密度增大,GO在NR基体中的分散性良好,硬度和撕裂强度增大以及导热性能改善。MMI modified GO(MMI-GO) was prepared by organically modifying(reducing) graphene oxide(GO) with water-soluble 2-mercapto-1-methylimidazole(MMI),while ascorbic acid(VC) reduced GO(rGO) was used as the control sample. GO/natural rubber(NR) composites were prepared by latex mixing of the modified GO and NR latex,and the effect of GO dosage on the properties of the composites was studied. The results showed that GO was successfully modified by MMI. As the GO dosage increased,the hardness,tear strength and thermal conductivity of the GO/NR composites increased. Compared with rGO/NR composites,the crosslinking density of MMI-GO/NR composites was higher,the dispersion of GO in NR matrix was better,the hardness and tear strength were higher,and the thermal conductivity was better.

关 键 词：氧化石墨烯 天然橡胶 复合材料 有机改性 硫化特性 物理性能 导热性能 

分 类 号：TQ330.383[化学工程—橡胶工业] TQ332