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《Journal of Forestry Engineering》 2018-01
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Properties of bamboo charcoal/graphite/epoxy resin electromagnetic interference shielding composite

YANG Wenbin;WEN Yueqin;SONG Jianbin;College of Materials and Engineering,Fujian Agriculture and Forestry University;  
This study investigated graphite composites with different contents of bamboo charcoal( BC) through curing molding,and fabricated BC/graphite electromagnetic interference( EMI) shielding composites by adding different contents of BC to the natural graphite and synthetic graphite,respectively. The mechanical performance,dynamic thermal mechanical properties,electrical resistivity,SEM,and EMI shielding effectiveness were studied. The results showed that the Tgof both natural and synthetic graphite composites increased when the BC contents increased; the electrical resistivity declined; and the EMI shielding effectiveness increased all the time. The maximum EMI shielding effectiveness reached about 30 d B when the BC content was 40 wt% of the synthetic graphene composite. However,due to the aggregation between particles,the flexural modulus of both graphene composites decreased. The results of SEManalyses showed better interface property of the synthetic graphene composites. It can be concluded that synthetic graphene composites had the better mechanical properties when the BC content was 30 wt%,and that with the increase of BC content,the EMI shielding effectiveness of graphene composites enhanced.
【Fund】: 国家自然科学基金(31170535)
【CateGory Index】: TB332
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