采用改进的Hummer法合成氧化石墨烯(GO),将GO进行热还原得到还原氧化石墨烯(RGO),并通过直接熔融密炼法制备石墨烯/丙烯腈-丁二烯-苯乙烯/三元乙丙橡胶(RGO/ABS/EPDM)复合材料。采用扫描电子显微镜、X射线衍射仪、傅里叶变换红外光谱仪、四探针法等分析手段对复合材料表面形貌、微观结构、导电性能和力学性能进行了表征。结果表明:RGO优先分散于丙烯腈-丁二烯-苯乙烯聚合物(ABS)中,且热还原得到的RGO有效地提高了复合材料的力学性能和导电性能;RGO添加量为2.5%(wt,质量分数,下同)时,复合材料拉伸强度提高74.8%,缺口冲击强度提高4.6%;RGO添加量为1.5%时,复合材料缺口冲击强度最大,提高19.8%;随着RGO添加量的增加,复合材料电阻率逐渐下降,当RGO添加量达到2.5%时,复合材料电阻率下降趋势变缓。
The modified Hummer method was used to prepare the graphene oxide (GO),and the GO was thermal reduced to obtain the RGO(reduced graphene oxide),and then the RGO/ABS/EPDM composite materials were prepared by direct melting and smelting method by combining RGO with ABS and EPDM.The surface morphology,microstructure,conductivity and mechanical properties were characterized by scanning electron microscopy (SEM),X-ray diffraction (XRD),Fourier infrared (FT-IR) and four-probe method.The results showed that the RGO was preferentially dispersed in ABS,and the mechanical properties of composite materials (RGO added was 2.5wt%,the tensile strength increased by 74.8wt%,the impact strength increased by 4.6wt%) and electrical conductivity (with the increasing of the quality of RGO,the resistivity was decreased,when added amount of 2.5%,the resistivity was declined slower than before) were improved effectively by additon the RGO.
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基金资助
科技部创新基金(11C26223204581);福建省闽江学者奖励计划(闽人社批复[2016]149号);中央引导地方科技发展专项基金(83017078);福建省自然科学基金(2018J01431);福州大学贵重仪器设备开放测试基金资助项目(2018T023);福建省中青年教师教育科研项目(JT180808);福州大学至诚学院院级课程改革项目(ZJ1835)
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