Preparation and electromagnetic shielding properties of PET/rGO/SWCNT composite fabric  

PET/rGO/SWCNT复合织物的制备及其电磁屏蔽性能研究

作　　者：ZHANG Xu LIU Xuejiao YAN Yehai 张旭;刘雪姣;闫业海(青岛科技大学高分子科学与工程学院,山东青岛266042)

机构地区：[1]School of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042

出　　处：《合成纤维工业》2024年第5期58-62,68,共6页China Synthetic Fiber Industry

摘　　要：Graphene oxide(GO)with excellent dispersion ability can assist the dispersion of single-walled carbon nanotube(SWCNT)and promote the formation of uniform and stable GO/SWCNT coating liquid.The highly conductive polyethylene terephthalate/reduced graphene oxide/SWCNT(PET/rGO/SWCNT)electromagnetic shielding composite fabric was successfully prepared by anchoring rGO/SWCNT on PET fabric via dip-coating piror to low-temperature thermal reduction.The results showed that the carboxyl groups and hydroxyl groups formed of hydrophilic-treated PET were conducive to the formation of hydrogen bonds with that of GO,which enhanced the interaction between PET fabric and GO/SWCNT coating;the loading of GO/SWCNT increased with the number of dip-coating,the unit area loading of rGO/SWCNT in the final composite fabric was 2.7 mg/cm^(2) after 10 dip-coating cycles and thermal reduction;the PET/rGO/SWCNT composite fabric had a continuous and dense conductive network,with a conductivity of up to 41.6 S/m and the average electromagnetic interference shielding effectiveness in X-band was 22 dB;the flexible PET/rGO/SWCNT composite fabric was not only easy to process,but also exhibited excellent conductivity and shielding efficiency,showing great potential in the application of electromagnetic shielding fabrics.利用氧化石墨烯(GO)优异的分散能力实现单壁碳纳米管(SWCNT)在溶液中的均匀分散,成功制备GO/SWCNT均匀混合涂覆液;通过简单可扩展的浸涂方法将GO/SWCNT混合液成功涂覆于聚对苯二甲酸乙二醇酯(PET)织物表面,随后通过低温热还原处理,制备了具有高导电性的PET/rGO/SWCNT电磁屏蔽复合织物。结果表明:GO表面的含氧基团可与亲水处理的PET之间形成氢键,增强界面间相互作用力;GO/SWCNT的负载量随着浸涂次数的增加而增加,经过10次浸涂循环和热还原后,最终复合织物中rGO/SWCNT的单位面积负载量为2.7 mg/cm^(2);制备的PET/rGO/SWCNT复合织物具有连续而致密的导电网络,电导率可达41.6 S/m,X波段平均电磁干扰屏蔽效能为22 dB;柔性PET/rGO/SWCNT复合织物不仅易于加工,而且表现出优异的导电性和电磁干扰屏蔽效能,在电磁屏蔽织物的应用中展现出巨大的潜力。

关 键 词：electromagnetic interference shielding graphene oxide single-walled carbon nanotubes conductive fabric thermal reduction 

分 类 号：TQ342.21[化学工程—化纤工业]