Multi-walled carbon nanotubes (MWCNTs) conductive paper/carbon fiber(CF) composites were prepared by vacuum suction filtration and physical compression.The effect of MWCNTs on the electromagnetic shielding effectiveness of the composites was studied.At the same time,the micro-morphology and conductivity of the composites were scanned.Electron microscope observations shown that MWCNTs in the composites were connected with recycled paper fibers,and a good 3D conductive network was established.Sustainable improvement,when the amount of MWCNTs was 110mg,the surface resistance of the composite was the smallest,11.7Ω/sq.In the frequency range of 8 to 12GHz,the composites had excellent electromagnetic shielding performance.The total electromagnetic shielding efficiency was as high as 35.2dB.As the content of MWCNTs in the composite increased,the average electromagnetic shielding effectiveness increased from 6.2dB to 31.8dB.The shielding principle of MWCNTs conductive paper/CF composites was mainly to realize electromagnetic shielding by absorbing electromagnetic waves.
Qin Wenfeng
,
Fu Jiawei
,
Wang Xinyuan
,
Fan Yuhang
,
Zhou Jianguo
. Preparation and electromagnetic shielding property of MWCNTs conductive paper/CF composite[J]. New Chemical Materials, 2020
, 48(9)
: 68
-71
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.09.015
[1] Chung D D L.Electromagnetic interference shielding effectiveness of carbon materials[J].Carbon,2001,39(2):279-285.
[2] Wang Y,Jing X.Intrinsically conducting polymers for electromagnetic interference shielding[J].Polymers for Advanced Technologies,2005,16(4):344-351.
[3] 古映莹,邱小勇,胡启明,等.电磁屏蔽材料的研究进展[J].材料导报,2005,19(2):53-56.
[4] Chung D D L.Carbon materials for structural self-sensing,electromagnetic shielding and thermal interfacing[J].Carbon,2012,50(9):3342-3353.
[5] 杨玉山,董发勤,郑凯.膨胀石墨/金属网/ABS复合材料电磁屏蔽性能的研究[J].功能材料,2013,44(7):966-969.
[6] Hong Y K,Lee C Y,Jeong C K,et al.Electromagnetic interference shielding characteristics of fabric complexes coated with conductive polypyrrole and thermally evaporated Ag[J].Current Applied Physics,2001,1(6):439-442.
[7] Li N,Huang Y,Du F,et al.Electromagnetic interference (EMI) shielding of single-walled carbon nanotube epoxy composites[J].Nano Letters,2006,6(6):1141-1145.
[8] Sachdev V K,Bhattacharya S,Patel K,et al.Electrical and EMI shielding characterization of multiwalled carbon nanotube/polystyrene composites[J].Journal of Applied Polymer Science,2015,131(24):205-212.
[9] Pang Z,Sun X,Wu X,et al.Fabrication and application of carbon nanotubes/cellulose composite paper[J].Vacuum,2015,122:135-142.
[10] Imai M,Akiyama K,Tanaka T,et al.Highly strong and conductive carbon nanotube/cellulose composite paper[J].Composites Science and Technology,2010,70(10):1564-1570.
[11] Lee T W,Lee S E,Jeong Y G.Carbon nanotube/cellulose papers with high performance in electric heating and electromagnetic interference shielding[J].Composites Science and Technology,2016,131:77-87.
[12] Song J,Yuan Q,Zhang H,et al.Elevated conductivity and electromagnetic interference shielding effectiveness of PVDF/PETG/carbon fiber composites through incorporating carbon black[J].Journal of Polymer Research,2015,22(8):1-8.
[13] Yue Z,Yu M Y,Lan X.Study on properties of carbon nanotubes/epoxy resin composite prepared by in situ polymerization[J].Advanced Materials Research,2013,750-752:132-135.
[14] Shahzad F,Alhabeb M,Hatter C B,et al.Electromagnetic interference shielding with 2D transitioon metal carbides (MXenes)[J].Science,2016,353(6304):1137-1140.
