Highly Conductive Ag/pCF/MVQ Composite Rubber for Efficient Electromagnetic Interference Shielding  

作　　者：Yang Chen Xiao-Ming Shao Liang He Yi-Nuo Xu Qi-Yuan Yao Ding Feng Wen-Cai Wang 

机构地区：[1]State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology,Beijing,100029,China [2]Key Laboratory of Beijing City for Preparation and Processing of Novel Polymer Materials,Beijing University of Chemical Technology,Beijing,100029,China [3]Sino-german School of Engineering,Qingdao University of Science and Technology,Qingdao,266400,China

出　　处：《Chinese Journal of Polymer Science》2024年第6期864-873,共10页高分子科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51833002).

摘　　要：In this study,flexible and highly conductive composite rubber at low filler content was successfully prepared through polydopamine-assisted electroless silver plating plus mechanical mixing.Firstly,carbon fibers(CF)were activated by polydopamine(PDA)to improve the surface activity by self-polymerization reaction.Next,because of the metal chelating ability of PDA,silver layer was firmly deposited on the surface of CF through a facile electroless silver plating method.Finally,flexible silver-plated carbon fibers(Ag/pCF)silicone rubber composites prepared by mechanical mixing.By using X-ray photoelectron spectroscopy(XPS)and X-ray diffraction(XRD),the chemical composition and crystal structure of Ag/pCF were examined,and scanning electron microscopy(SEM)was used to assess the surface morphology of the Ag/pCF.The results showed that a uniform and dense silver layer was formed on the surface of the CF,and the conductivity of the Ag/pCF could reach 7885 S/cm.It was noteworthy that the composite rubber filled with only 45 phr Ag/pCF had a high electromagnetic interference shielding effectiveness(100 dB)due to the low density and high aspect ratio of Ag/pCF.The composite rubber has excellent potential for application in the field of electromagnetic interference shielding.

关 键 词：Carbon fibers POLYDOPAMINE Electroless plating SILVER Electromagnetic interference shielding 

分 类 号：TQ330.1[化学工程—橡胶工业] TB332[一般工业技术—材料科学与工程]