| 257 | 6 | 81 |
| 下载次数 | 被引频次 | 阅读次数 |
为制备出一种柔性、轻质、高效的电磁屏蔽材料,以密度为0.055 g/cm3的活性炭纤维毡(ACF)为原料,研究了氩气气氛高温处理对ACF微观结构和电磁屏蔽性能的影响;借助X射线衍射、Raman光谱及扫描电子显微镜观察和检测了材料的微观结构和物相组成,采用矩形波导法测试了试样在8.2～12.4 GHz频率范围内的电磁参数。结果表明:高温处理可以提高ACF中碳的有序化程度。经高温处理后的ACF与处理前相比,其电导率和电磁屏蔽效能均得到提高,其中1 400℃高温处理后的ACF,总的电磁屏蔽效能达到39 dB,比原始ACF(～16 dB)提高了23 dB,表明高温处理可明显改善ACF的电磁屏蔽性能。
Abstract：A flexible, lightweight and efficient electromagnetic shielding material was prepared with activated carbon fiber felt(ACF) with the density of 0.055 g/cm3. The phase compositions and micro-morphology were characterized by X-ray diffraction and scanning electron microscopy, respectively. The electromagnetic parameters of samples at 8.2–12.4 GHz were examined by a rectangular waveguide method. The results show that high-temperature treatment can improve the degree of carbon ordering in ACF. The conductivity and electromagnetic shielding efficiency of ACF are improved after high-temperature treatment. The total electromagnetic shielding effectiveness of ACF is 39 dB after high-temperature treatment at 1 400 ℃, which is 23 d B greater than that of the raw material of ACF(i.e., 16 dB). It is indicated that high-temperature treatment could improve the electromagnetic shielding performance of ACF.
[1] SYKAM N, RAO G M. Lightweight flexible graphite sheet for high-performance electromagnetic interference shielding[J]. Mater Lett,2018. 230:59–62.
[2] YANG Fei, LIANG Mei, YAN Liwei, et al. Co/C@cellulose nanofiber aerogel derived from metal-organic frameworks for highly efficient electromagnetic interference shielding[J]. Chem Eng J, 2020, 392:124815.
[3] SINGH A K, SHISHKIN A, KOPPEL T, et al. Porous materials for EMI shielding[C]//JOSEPHK, WILSONR, GEORGE G, eds. Materials for Potential EMI Shielding Applications. Elsevier, 2020:287–314.
[4] XING D, LU L, TANG W, et al. An ultra-thin multilayer carbon fiber reinforced composite for absorption-dominated EMI shielding application[J]. Mater Lett, 2017, 207:165–168.
[5] MUNALLI D, DIMITRAKIS G, CHRONOPOULOS D, et al.Electromagnetic shielding effectiveness of carbon fibre reinforced composites[J]. Compos Part B-Eng, 2019, 173:106906.
[6] LI S, ZHOU Z, ZHANG T, et al. Synthesis and characterization of Ag/Fe3O4 electromagnetic shielding particles[J]. J Magn Magn Mater,2014, 358:27–31.
[7] KONDAWAR S B, MODAK P R. Theory of EMI shielding[M]//JOSEPHK, WILSONR, GEORGE G, eds. Materials for Potential EMI Shielding Applications. Elsevier, 2020:9–25.
[8] AAL N A, EL-TANTAWY F, AL-HAJRY A, et al. New antistatic charge and electromagnetic shielding effectiveness from conductive epoxy resin/plasticized carbon black composites[J]. Polym Composite,2008, 29(2):125–132.
[9] WU F, WANG Y, WANG M. Using organic solvent absorption as a self-assembly method to synthesize three-dimensional(3D)reduced graphene oxide(RGO)/poly(3,4-ethylenedioxythiophene)(PEDOT)architecture and its electromagnetic absorption properties[J]. RSC Adv,2014, 4(91):49780–49782.
[10] KIM J T, PARK C W, KIM B J. A study on synergetic EMI shielding behaviors of Ni-Co alloy-coated carbon fibers-reinforced composites[J].Synthetic Met, 2017,223:212–217.
[11] FAN W, LI D, LI J, et al. Electromagnetic properties of three-dimensional woven carbon fiber fabric/epoxy composite[J].TEXT RES J, 2018, 88(20):2353–2361.
[12]李星宇.基于石墨烯的高性能电磁屏蔽膜的研究[D].太原:太原理工大学, 2019.LI Xingyu. Research on graphene-based high-performance electromagnetic shielding film(in Chinese, dissertation). Taiyuan:Taiyuan University of Technology, 2019.
[13] SUZUKI M. Activated carbon fiber:fundamentals and applications[J].Carbon, 1994, 32(4):577–586.
[14] NAEEM M S, HASSAN S Z, JAVED Z, et al. Electromagnetic shielding effectiveness of high loft activated carbon web prepared by using acrylic waste[J]. Mater Sci Eng, 2018, 414(1):012048.
[15] NAEEM S, BAHETI V, TUNAKOVA V, et al. Development of porous and electrically conductive activated carbon web for effective EMI shielding applications[J]. Carbon, 2017, 111:439–447.
[16] KIM B J, KIM K W. Carbon fiber-reinforced composites for EMI shielding[M]//JOSEPHK, WILSONR, GEORGE G, eds. Materials for Potential EMI Shielding Applications. Elsevier, 2020:213–225.
[17] JUNIOR M, MARCUZZO J S, PINHEIRO B, et al. Study of reflection process for nickel coated activated carbon fiber felt applied with electromagnetic interference shielding[J]. J Mater Res Technol, 2019,8(5):4040–4047.
[18] MAO Y, ZHANG S, WANG W, et al. Electroless silver plated flexible graphite felt prepared by dopamine functionalization and applied for electromagnetic interference shielding[J]. Colloid Surf A, 2018, 558:538–547.
[19] HASSAN M F, SABRI M A, FAZAL H, et al. Recent trends in activated carbon fibers production from various precursors and applications—A comparative review[J]. J Anal Appl Pyrol, 2020,145:104715.
[20] HUANG Y, PENG L, LIU Y, et al. Biobased nano porous active carbon fibers for high-performance supercapacitors[J]. ACS Appl Mater Inter,2016, 8(24):15205–15215.
[21] AL-SALEH M H, SAADEH W H, SUNDARARAJ U. EMI shielding effectiveness of carbon based nanostructured polymeric materials:A comparative study[J]. Carbon, 2013, 60:146–156.
[22] FEI Y, LU J, LI H, et al. Influence of heat treatment temperature on microstructure and thermal expansion properties of 2D carbon/carbon composites[J]. Vacuum, 2014, 102:51–53.
[23] FENG L, LI K, XUE B, et al. Optimizing matrix and fiber/matrix interface to achieve combination of strength, ductility and toughness in carbon nanotube-reinforced carbon/carbon composites[J]. Mater Design, 2017, 113:9–16.
[24] WEN Q, YU Z, RIEDEL R. The fate and role of in situ formed carbon in polymer-derived ceramics[J]. Prog Mater Sci, 2020, 109:100623.
[25] FERRARI A C. Raman spectroscopy of graphene and graphite:Disorder, electron–phonon coupling, doping and nonadiabatic effects[J]. Solid State Commun, 2007, 143(1/2):47–57.
[26] WANG P, ZHANG S, LI H, et al. Variation of thermal expansion of carbon/carbon composites from 850 to 2500°C[J]. Ceram Int, 2014,40(1):1273–1276.
[27] TESSONNIER J P, ROSENTHAL D, HANSEN T W, et al. Analysis of the structure and chemical properties of some commercial carbon nanostructures[J]. Carbon, 2009, 47(7):1779–1798.
[28] INAGAKI M. Carbon Materials Science and Engineering:From Fundamentals to Applications[M]. Beijing:Tsinghua University Press,2006.
[29]贺福.碳纤维及石墨纤维[M].北京:化学工业出版社, 2010.
[30] AMELI A, JUNG P U, PARK C B. Electrical properties and electromagnetic interference shielding effectiveness of polypropylene/carbon fiber composite foams[J]. Carbon, 2013, 60:379–391.
[31] YANG W, ZHAO Z, WU K, et al. Ultrathin flexible reduced graphene oxide/cellulose nanofiber composite films with strongly anisotropic thermal conductivity and efficient electromagnetic interference shielding[J]. J Mater Chem C, 2017, 5(15):3748–3756.
[32] CRESPO M, GONZáLEZ M, ELIAS A L, et al. Ultra-light carbon nanotube sponge as an efficient electromagnetic shielding material in the GHz range[J]. Phys Status Solidi-R, 2014, 8(8):698–704.
[33] SHEN B, LI Y, ZHAI W, et al. Compressible graphene-coated polymer foams with ultralow density for adjustable electromagnetic interference(EMI)shielding[J]. ACS Appl Mater Inter, 2016,8(12):8050–8057.
[34] WAN C, LI J. Graphene oxide/cellulose aerogels nanocomposite:Preparation, pyrolysis, and application for electromagnetic interference shielding[J]. Carbohyd Polym, 2016, 150:172–179.
[35] CHEN Z, XU C, MA C, et al. Lightweight and flexible graphene foam composites for high-performance electromagnetic interference shielding[J]. Adv Mater, 2013, 25(9):1296–1300.
[36] CUI C, YAN D, PNAG H, et al. A high heat-resistance bioplastic foam with efficient electromagnetic interference shielding[J]. Chem Eng J,2017, 323:29–36.
[37] ZENG Z, CHEN M, PEI Y, et al. Ultralight and flexible polyurethane/silver nanowire nanocomposites with unidirectional pores for highly effective electromagnetic shielding[J]. ACS Appl Mater Inter,2017, 9(37):32211–32219.
[38] LI Y, SAMAD Y A, POLYCHRONOPOULOU K, et al. Lightweight and highly conductive aerogel-like carbon from sugarcane with superior mechanical and EMI shielding properties[J]. ACS Sustain Chem Eng, 2015, 3(7):1419–1427.
[39] ZENG Z, JIN H, CHEN M, et al. Lightweight and anisotropic porous MWCNT/WPU composites for ultrahigh performance electromagnetic interference shielding[J]. Adv Funct Mater, 2016, 26(2):303–310.
[40] YUAN Y, SUN X, YANG M, et al. Stiff, thermally stable and highly anisotropic wood-derived carbon composite monoliths for electromagnetic interference shielding[J]. ACS Appl Mater Inter, 2017,9(25):21371–21381.
[41] JI K, ZHAO H, ZHANG J, et al. Fabrication and electromagnetic interference shielding performance of open-cell foam of a Cu–Ni alloy integrated with CNTs[J]. Appl Surf Sci, 2014, 311:351–356.
[42] LING J, ZHAI W, FENG W, et al. Facile preparation of lightweight microcellular polyetherimide/graphene composite foams for electromagnetic interference shielding[J]. ACS Appl Mater Inter, 2013,5(7):2677–2684.
[43] SHEN B, ZHAI W, TAO M, et al. Lightweight, multifunctional polyetherimide/graphene@Fe3O4 composite foams for shielding of electromagnetic pollution[J]. ACS Appl Mater Inter, 2013, 5(21):11383–11391.
[44] GUPTA S, TAI N H. Carbon materials and their composites for electromagnetic interference shielding effectiveness in X-band[J].Carbon, 2019, 152:159–187.
[45]徐文韬,丁东海,于新民,等.熔盐辅助燃烧合成碳泡沫及其电磁屏蔽性能[J].硅酸盐学报. 2020, 48(5):768–776.XU Wentao, DING Donghai, YU Xinmin, et al. J Chin Ceram Soc,2020, 48(5):768–776.
基本信息:
DOI：10.14062/j.issn.0454-5648.20200573
中图分类号:TQ342.74;TB34
引用信息:
[1]杨宁,丁冬海,李子沛,等.高温处理对活性炭纤维毡电磁屏蔽性能的影响[J].硅酸盐学报,2021,49(06):1143-1150.DOI:10.14062/j.issn.0454-5648.20200573.
基金信息:
国家自然科学基金(51502236,51572212,51772236); 陕西省教育厅重点实验室科研计划项目(15JS053)
2020-08-03
2020
2021-04-14
2021-04-13
2021
1
2021-04-06
2021-04-06
2021-04-06