a.School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
b.State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Xiamen 361100, China
c.School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
zhipengxie1982@163.com (Z.P.X.)
xieaming@njust.edu.cn (A.M.X.)
收稿:2022-12-20,
修回:2023-2-26,
录用:2023-2-27,
网络首发:2023-04-18,
纸质出版:2023-08-01
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Chen, H.; Chu, F. Y.; Zhuang, H. Y.; Wang, L.; Ye, Z. M.; Dong, W.; Xie, Z. P.; Xie, A. M. Hyper-crosslinked conjugated microporous polymers with increased micropores promotes confining polymerization for electromagnetic absorption application. Chinese J. Polym. Sci. 2023, 41, 1305–1316
Hao Chen, Fang-Yuan Chu, Hai-Yan Zhuang, et al. Hyper-crosslinked Conjugated Microporous Polymers with Increased Micropores Promotes Confining Polymerization for Electromagnetic Absorption Application[J]. Chinese Journal of Polymer Science, 2023, 41(8): 1305-1316.
Chen, H.; Chu, F. Y.; Zhuang, H. Y.; Wang, L.; Ye, Z. M.; Dong, W.; Xie, Z. P.; Xie, A. M. Hyper-crosslinked conjugated microporous polymers with increased micropores promotes confining polymerization for electromagnetic absorption application. Chinese J. Polym. Sci. 2023, 41, 1305–1316 DOI: 10.1007/s10118-023-2962-y.
Hao Chen, Fang-Yuan Chu, Hai-Yan Zhuang, et al. Hyper-crosslinked Conjugated Microporous Polymers with Increased Micropores Promotes Confining Polymerization for Electromagnetic Absorption Application[J]. Chinese Journal of Polymer Science, 2023, 41(8): 1305-1316. DOI: 10.1007/s10118-023-2962-y.
Conjugated microporous polymers have excellent skeleton structures but poor electrical conductivity limits their applications in microwave absorption. To solve this problem
a strategy of molecular expansion and confining polymerization is proposed in this work to synthesize conductive hyper-crosslinked conjugated microporous polymer. The topology of the conjugated microporous polymer is changed into a three-dimensional skeleton structure with high specific surface area by using molecular expansion technique
and the controlled growth of polypyrrole in the channel constructs a unique network structure. The balance of excellent composite backbone structure
proper conductivity
attenuation capability and impedance matching enable the material to exhibit electromagnetic wave absorption performance. As a result
with low filler loading of 10 wt%
a strongest reflection loss of −52.68 dB and a maximum effective bandwidth of 5.76 GHz. Additionally
CST simulations of the radar scattering cross section have been carried out to verify the excellent material properties. This study provides new concepts for new conductive polymers and broadens the application of hyper-crosslinked conjugated microporous polymer in the field of electromagnetic wave absorption.
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