Hyper-crosslinked Conjugated Microporous Polymers with Increased Micropores Promotes Confining Polymerization for Electromagnetic Absorption Application  

作　　者：Hao Chen Fang-Yuan Chu Hai-Yan Zhuang Lu Wang Zhi-Min Ye Wei Dong Zhi-Peng Xie A-Ming Xie 

机构地区：[1]School of Mechanical Engineering,Nanjing University of Science&Technology,Nanjing 210094,China [2]State Key Laboratory for Marine Corrosion and Protection,Luoyang Ship Material Research Institute(LSMRI),Xiamen 361100,China [3]School of Chemistry and Chemical Engineering,Nanjing University of Science&Technology,Nanjing 210094,China

出　　处：《Chinese Journal of Polymer Science》2023年第8期1305-1316,I0011,共13页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.52273267);the Fundamental Research Funds for the Central Universities(Nos.30920041102 and 30920021107)。

摘　　要：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 d B 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.

关 键 词：Hyper-crosslinked conjugated microporous polymer Electromagnetic wave absorbing Molecular expansion Polypyrrole 

分 类 号：TQ317[化学工程—高聚物工业] O441.4[理学—电磁学]