多巴胺还原氧化石墨烯增强溴化丁基橡胶复合材料的性能研究  

Study on Properties of BIIR Composites Reinforced by DA Reduced GO

作　　者：肖鹏翔 王亚珍[1] 陆恒玉 马传国[1,3] 戴培邦[1,3] XIAO Pengxiang;WANG Yazhen;LU Hengyu;MA Chuanguo;DAI Peibang(Guilin University of Electronic Technology,Guilin 541004,China;ChemChina Shuguang Rubber Industry Research Design Institute Co.Ltd,Guilin 541007,China)

机构地区：[1]桂林电子科技大学材料科学与工程学院,广西桂林541004 [2]中国化工集团曙光橡胶工业研究设计院有限公司,广西桂林541004 [3]桂林电子科技大学广西电子信息材料构效关系重点实验室,广西桂林541004

出　　处：《橡胶工业》2023年第1期3-12,共10页China Rubber Industry

基　　金：国家自然科学基金资助项目(51763006);广西自然科学基金创新团队项目(2019GXNSFGA245005)。

摘　　要：采用多巴胺(DA)对氧化石墨烯(GO)进行改性得到聚多巴胺改性石墨烯(PDA-rGO),通过溶液共混法制备PDA-rGO/溴化丁基橡胶(BIIR)复合材料,研究PDA-rGO用量对复合材料性能的影响。结果表明:DA的改性抑制了GO在BIIR基体中的堆叠团聚,并增强GO与BIIR基体间的界面相互作用;与BIIR胶料相比,PDA-rGO(用量0.5份)/BIIR复合材料的交联密度增大58%,对于甲苯的溶胀指数减小14%,拉伸强度增大40%,其综合性能最佳;在频率1 kHz下,PDArGO(用量0.5份)/BIIR复合材料的相对介电常数增大26%,其液敏元件对甲醇和丁酮的电容响应度显著增大,分别达到10.7和79.4,PDA-rGO/BIIR复合材料有望用于某些有机溶剂的鉴别。Polydopamine-modified graphene(PDA-rGO)was obtained by modifying graphene oxide(GO)with dopamine(DA).The PDA-rGO/bromobutyl rubber(BIIR)composites were prepared by solution blending method,and the effect of the amount of PDA-rGO on the properties of the composites was studied.The results showed that the modification of DA inhibited the stacking and agglomeration of GO in the BIIR matrix and enhanced the interfacial interaction between GO and BIIR matrix.Compared with the BIIR compound,the crosslinking density of the PDA-rGO(0.5 phr)/BIIR composites increased by 58%,the swelling index of toluene decreased by 14%,the tensile strength increased by 40%,and its comprehensive performance was the best.In addition,at the frequency of 1 kHz,the relative permittivity of the PDA-rGO(0.5 phr)/BIIR composites increased by 26%,and the capacitance responsivity to methanol and butanone increased significantly,reaching 10.7 and 79.4,respectively.The PDA-rGO/BIIR composites were expected to be used for the identification of some organic solvents.

关 键 词：多巴胺 氧化石墨烯 溴化丁基橡胶 拉伸性能 耐溶剂性能 介电性能 

分 类 号：TQ330.387[化学工程—橡胶工业] TQ333.6