Study on the Comprehensive Properties of Absorbing Prepreg Resin and Its Composite
WU Zhichao1, NI Aiqing2, CHEN Junlei1, WANG Jihui1,*
1 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China 2 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
Abstract: The carbonyl iron powder (CIP) and acetylene black (CB) were introduced into the medium temperature curing prepreg resin system as absorbent agents. The influence of the addition of absorbent agents on the properties of prepreg resin was determined by testing the rheological properties, gel time, curing characteristic temperature, and thermogravimetric properties of the prepreg resin. The results showed thatthe addition of CIP and CB absorbent particles had little effect on the gel time and curing characteristic temperature of prepreg resin, but great effect on the rheological properties of prepreg resin. In order to meet the requirements of process performance, the mass ratio of CIP and CB absorbent particles to resin should be controlled from 0 to 2.5, and the mass ratio of CB to resin should be controlled from 0 to 0.03. Compared with the single-layer structure absorbing composite material, the two-layer structure absorbing composite material had better absorbing performance. Considering its forming process performance and absorbing performance comprehensively, the material combination of C3C as the wave penetrating layer and Fe250C as the loss layer had the best comprehensive performance. And its maximum effective absorbing bandwidth is 3.85 GHz, the corresponding thickness of the wave penetrating layer and the loss layer are 0.9 mm and 1.5 mm. The minimum RL value is -35.46 dB, the corresponding thickness of the wave penetra-ting layer and the loss layer are 0.5 mm and 1.4 mm, respectively.
邬志超, 倪爱清, 陈俊磊, 王继辉. 吸波预浸料树脂及其复合材料的综合性能研究[J]. 材料导报, 2024, 38(10): 23010035-10.
WU Zhichao, NI Aiqing, CHEN Junlei, WANG Jihui. Study on the Comprehensive Properties of Absorbing Prepreg Resin and Its Composite. Materials Reports, 2024, 38(10): 23010035-10.
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2024, Vol. 38 
