To solve the problem of Graphene/ABS composite with high thermal conductivity but without electrical insulation,a sandwich structure was designed to prepare ABS thermal conductivity and electrical insulation materials.First,Graphene/ABS composite and hexagonal Boron nitride(hBN)/ABS composite were obtained respectively by melt mixing,and then the hBN/ABS composite coated with Graphene/ABS composite to obtain ABS matrix composite,that had hBN/ABS-Graphene/ABS-hBN/ABS sandwich structure.The effects of Graphene content and interlayer thickness on the thermal conductivity and resistance of the standard sample of the sandwich structure composite were experimentally studied.It was found that for the sandwich structure sample coated with hBN/ABS insulation layer,Graphene filler had a smaller effect on the thermal conductivity.At this time,the material was more affected by the thermal conductivity of hBN/ABS insulation layer.Although it significantly reduced the thermal conductivity of the composite,compared with the ABS matrix before modification,there was still a significant improvement in the thermal conductivity of composite materials,and it also made the composite material an electrical insulator with a resistance value of 1 x 1010 orders of magnitude.
关键词
六方氮化硼(hBN)/石墨烯/ABS基复合材料/夹层式结构/导热绝缘
Key words
hexagonal boron nitride(hBN)/graphene/ABS matrix composite/sandwich structure/thermal conductivity and electrical insulation
维普
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