碳纳米管涂层双罗纹织物的电磁屏蔽性能  

Electromagnetic Shielding Performance of Double Rib FabricCoated with Carbon Nanotube

作　　者：周子滢 段茹雪 刘宁娟 贾可[1] 刘玮[1] ZHOU Ziying;DUAN Ruxue;LIU Ningjuan;JIA Ke;LIU Wei(School of Textiles and Fashion,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学纺织服装学院,上海201600

出　　处：《现代纺织技术》2021年第4期43-50,共8页Advanced Textile Technology

基　　金：国家自然科学基金项目(51503120);上海市扬帆计划项目(14YF14096000);上海市优秀青年教师培养项目(ZZGCD14016)。

摘　　要：碳纳米管(CNT)因其优异的电学性能和力学性能,近年来被广泛运用到电磁屏蔽织物的开发和研究中。采用三浸三轧—烘干的方式制备CNT分散液涂层双罗纹织物,研究CNT涂层对双罗纹织物在电磁屏蔽能力方面的影响。结果表明:随着碳纳米管分散液质量分数的提高,涂层双罗纹织物的电磁屏蔽性能不断增强,质量分数为7%时碳纳米管涂层双罗纹织物的电磁屏蔽效果最好,在测试频段为2000 MHz时电磁屏蔽效能可以达到25.5 dB,电阻率为0.052 kΩ/cm;相比于质量分数为1%时,电磁屏蔽效能提高了226.9%,水洗后涂层双罗纹织物在2000 MHz频段时仍可以达到21.4 dB,满足商用需求(20 dB)。加入质量分数为5%的聚氨酯(PU)喷涂在7%CNT涂层双罗纹织物上,提高了电磁屏蔽性能,且水洗后电磁屏蔽效果最高可以达到22.9 dB。In recent years,carbon nanotubes(CNTs)have been widely used in the development and research of electromagnetic shielding fabrics because of their excellent electrical and mechanical properties.In this study,CNT dispersion coated double rib fabric is impregnated three times and then rolled three times through a press roll,following with drying the oven.The influence of CNTcoating on electromagnetic shielding ability of the fabric was studied.The results showed that with the increase of the mass fraction of CNT dispersion,the electromagnetic shielding performance of the coated double rid fabric is continuously enhanced.When the mass fraction is 7%,the coated double rid fabric showed best electromagnetic shielding performance.The electromagnetic shielding effect can reach 25.5 dB at a testing frequency of 2000 MHz.The resistivity of the coated double rid fabric is 0.052 kΩ·cm.Compared with the mass fraction is 1%,the electromagnetic shielding effectiveness is increased by 226.9%.After washing the electromagnetic shielding effect of the double rid fabric can still reach 21.4 dB at frequency of 2000 MHz,which meets the commercial demands(20 dB).The introduction of 5%PU sprayed on the 7%CNT coated double rid fabric improves the electromagnetic shielding performance,and the electromagnetic shielding effect can reach 22.9 dB after washing.

关 键 词：针织物 碳纳米管 电磁屏蔽 透气性 导电性 

分 类 号：TS181.8[轻工技术与工程—纺织材料与纺织品设计]