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Preparation and electrical conductivity of graphene/ultrahigh molecular weight polyethylene composites with a segregated structure |
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| Authors: | Hongliang Hu Guo Zhang Liguang Xiao Hongjie Wang Qiushi Zhang Zhudi Zhao |
| Affiliation: | 1. Department of Materials Science and Key Lab of Automobile Materials of MOE, Jilin University, Changchun 130012, PR China;2. School of Materials Science and Engineering, Jilin Architecture and Civil Engineering Institute, Changchun 130118, PR China;3. School of Vocational Technology, Jilin Architecture and Civil Engineering Institute, Changchun 130118, PR China |
| Abstract: | Graphene-coated ultrahigh molecular weight polyethylene (UHMWPE) powders were prepared by a two-step process. The first step is to coat UHMWPE polymers with graphene oxide (GO) sheets. The second step is to reduce GO on the powders to graphene. The two-step process can effectively prevent the aggregation of graphene during reduction. The resultant graphene/UHMWPE mixtures were hot pressed at 200 °C to obtain the composites with a segregated structure. The composites exhibit high electrical conductivity at a very low percolation threshold (0.028 vol.%). Our method provides a new route for preparing electrical conductive graphene/polymer composites with low percolation threshold. |
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