层层组装氧化石墨烯/聚吡咯涂层棉织物的电磁屏蔽性能  

Electromagnetic shielding properties of graphene oxide/polypyrrole coated cotton fabric with layer-by-layer assembling method

作　　者：邹梨花 杨莉[1] 兰春桃 阮芳涛[1] 徐珍珍[1] ZOU Lihua;YANG Li;LAN Chuntao;RUAN Fangtao;XU Zhenzhen(Anhui Province International Cooperation Research Center of Textile Structure Composite Materials,Anhui Polytechnic University, Wuhu, Anhui 241000, China;School of Textile Science and Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China)

机构地区：[1]安徽工程大学安徽省纺织结构复合材料国际联合研究中心,安徽芜湖241000 [2]江南大学纺织科学与工程学院,江苏无锡214122

出　　处：《纺织学报》2021年第12期111-118,共8页Journal of Textile Research

基　　金：国家自然科学基金项目(51903001);安徽省纺织结构复合材料国际联合研究中心开放基金项目(2021ACTC07);安徽省对外科技合作项目(1804b06020360);安徽工程大学科研项目(Xjky2020041)。

摘　　要：为制备高效吸波型电磁屏蔽织物,采用层层组装法在棉织物表面构筑氧化石墨烯/聚吡咯(GO/PPy)功能膜。借助傅里叶红外光谱仪和扫描电子显微镜对GO/PPy涂层织物的结构进行表征,通过万用表和矢量网络分析仪测试织物的导电性能和电磁屏蔽性能。结果表明:织物的阳离子化处理有利于氧化石墨烯和聚吡咯的沉积,适宜的GO质量浓度(0.4 g/L)有利于提升织物的电磁屏蔽效能;随着组装层数的增加,织物的电磁屏蔽性能增加,当组装层数为20时,织物的电磁屏蔽效能达到39.2 dB,可屏蔽99.98%的电磁能;织物对电磁波的吸收率始终大于50%,其主要的屏蔽机制为吸收而非反射。To study the influence of deposition of graphene oxide(GO)/polypyrrole(PPy)and their concentrations on electromagnetic shielding property of coated fabric,and obtain highly efficient wave-absorbing electromagnetic shielding properties,GO/PPy functional film was constructed on a cotton fabric using layer-by-layer assembling method.The GO/PPy coated fabric structure was characterized by Fourier infrared spectrometer and scanning electron microscope,and the electrical conductivity and electromagnetic shielding properties of the fabric were tested by multimeter and vector network analyzer.The results show that the cationic treatment of the fabric is beneficial for the deposition of GO and PPy.It was found that optimal GO concentration(0.4 g/L)is beneficial to improve the electromagnetic shielding effectiveness of the fabric,and that with the increase of the number of assembled layers,the electromagnetic shielding efficiency of the coated fabric increases.In particular,when the number of assembled layers was 20,the electromagnetic shielding efficiency of the fabric reached 39.2 dB,which can shield 99.98%of the electromagnetic energy.The absorptivity of electromagnetic wave is always more than 50%.The main shielding mechanism is absorption,followed by reflection.

关 键 词：层层组装法 氧化石墨烯 聚吡咯 导电网络 电磁屏蔽织物 组装层数 阳离子化处理 棉织物 

分 类 号：TS101.8[轻工技术与工程—纺织工程]