EFFECT OF REDUCTION DEGREE ON MICROWAVE ABSORPTION PROPERTIES OF GRAPHENE COMPOSITES

Abstract

Abstract: Reduced Graphene Oxide (RGO) is considered to be the most promising candidate for high-efficiencyelectromagnetic wave absorption materials. The dielectric loss mechanism associated with its defects is a hot topic in current research. Graphene Oxide (GO) was prepared by closed oxidation method, and RGO with controllable reduction degree was prepared by VC reduction. The results show that the reduction degree of RGO increases with the increase of the amount of VC and the conductivity is positively correlated with it. Highly reduction degree RGO has better absorbing property in 1 GHz~18 GHz. When the addition amount of RGO is only 1.5wt% in the resin matrix, the absorber with 3 mm thickness has the strongest absorption peak of -16.4 dB at 9.5 GHz. This work reveals the dielectric relaxation mechanism related to RGO defects, and provides an understanding for the research and application of novel graphene-based composite absorbers.

Key words: graphene, reduction degree, ascorbic acid, absorbing materials

CLC Number:

TB332

ZOU Yi, WANG Jun, TIAN Xu-jun. EFFECT OF REDUCTION DEGREE ON MICROWAVE ABSORPTION PROPERTIES OF GRAPHENE COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2020, 0(1): 47-51.

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