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以天然石墨为原料通过改进的Hummers法制备了氧化石墨烯,并用十八烷基胺对氧化石墨烯进行了改性。X射线衍射分析结果表明,石墨烯分散成了单片层结构并成功接枝十八烷基胺。采用溶液共混法制备了溴化丁基橡胶/氧化石墨烯接枝十八胺复合材料,对该复合材料断面微观形态的观察分析未发现存在堆积的石墨烯,表明改性后的石墨烯在溴化丁基橡胶中得到了较好的分散。实验表明,加入了1.5份(质量)氧化石墨烯接枝十八烷基胺溴化丁基橡胶的拉伸强度从纯溴化丁基橡胶的2.89 MPa增大到6.67 MPa,提高了130%;扯断伸长率从680%增大到1 074%,提高了57.4%。
Graphene oxide was prepared from natural graphite by a modified Hummers method and graphene oxide was modified with octadecylamine. X-ray diffraction analysis showed that graphene dispersed into monolithic structure and successfully grafted octadecylamine. The brominated butyl rubber / graphene oxide grafted octadecyl amine composite was prepared by solution blending method. The observed and analyzed microstructure of the composite did not find the presence of graphene, indicating that the modified graphene Brominated butyl rubber has been better dispersed. The experimental results showed that the tensile strength of grafted stearyl amine brominated butyl rubber with 1.5 parts by mass of graphene oxide increased from 2.89 MPa to 6.67 MPa of pure bromobutyl rubber with an increase of 130%. Elongation at break increased from 680% to 1074%, an increase of 57.4%.