针对低频频段(＜1.5GHz)的电磁屏蔽涂层,采用快速混合法制备出导电聚苯胺纳米线,使用透射电镜(TEM)对其形貌和尺度进行表征,研究了搅拌方式对聚苯胺/聚氨酯涂层的导电性能和电磁屏蔽性能的影响.研究表明,由于磁场的作用,采用电磁搅拌法可以缩短聚苯胺聚合反应时间,合成均一的导电聚苯胺纳米线,其渗滤阈值为33.3％,含量为33.3％的聚苯胺纳米线的聚苯胺/聚氨酯涂层的电磁屏蔽性能为32.2dB,优于含量为45％的机械搅拌法制备的聚苯胺粉体,这可能是由于线性结构的导电聚苯胺在基体中能够较容易形成三维导电网络结构所致.
参考文献
| [1] | Su S.J.;Kuramoto N. .Processable polyaniline-titanium dioxide nanocomposites: effect of titanium dioxide on the conductivity[J].Synthetic Metals,2000(2):147-153. |
| [2] | J. Joo;C. Y. Lee .High frequency electromagnetic interference shielding response of mixtures and multilayer films based on conducting polymers[J].Journal of Applied Physics,2000(1):513-518. |
| [3] | 李伟平 .The research on preparation and electromagnetic characters of polyaniline(导电聚苯胺的制备及其电磁性能的研究)[D].大连:大连理工大学,2007. |
| [4] | Sambhu Bhadra;Dipak Khastgir;Nikhil K. Singha .Progress in preparation, processing and applications of polyaniline[J].Progress in Polymer Science,2009(8):783-810. |
| [5] | D. Zhang;Y. Wang .Synthesis and applications of one-dimensional nano-structured polyaniline: An overview[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2006(1):9-19. |
| [6] | Xinyu Zhang;Roch Chan-Yu-King;Anil Jose .Nanofibers of polyaniline synthesized by interfacial polymerization[J].Synthetic Metals,2004(1):23-29. |
| [7] | P.L.B. Araujo;E.S. Araujo;R.F.S. Santos;A.P.L. Pacheco .Synthesis and morphological characterization of PMMA/polyaniline nanofiber composites[J].Microelectronics journal,2005(11):1055-1057. |
| [8] | Sunil K.Pillalamarri;Frank D.Blum;Akira T.Tokuhiro;J.G.Story;Massimo F.Bertino .Radiolytic Synthesis of Polyaniline Nanofibers:A New Templateless Pathway[J].Chemistry of Materials,2005(2):227-229. |
| [9] | Niu YH .Electromagnetic interference shielding with polyaniline nanofibers composite coatings[J].Polymer engineering and science,2008(2):355-359. |
| [10] | 付志兵,唐永建,王朝阳.超声化学法合成聚苯胺及其表征[J].功能材料,2009(12):2020-2022. |
| [11] | Jing XL;Wang YY;Wu D;Qiang JP .Sonochemical synthesis of polyaniline nanofibers[J].Ultrasonics sonochemistry,2007(1):75-80. |
| [12] | Jiaxing Huang;Richard B.Kaner .Nanofiber Formation in the Chemical Polymerization of Aniline:A Mechanistic Study[J].Angewandte Chemie,2004(43):5817-5821. |
| [13] | Li D;Kaner RB .Shape and aggregation control of nanoparticles: Not shaken, not stirred[J].Journal of the American Chemical Society,2006(3):968-975. |
| [14] | Huang J X;Virji S;Weiller B H et al.Polyaniline nanofibers:Facile synthesis and chemical sensors[J].Journal of the American Chemical Society,2003,125(02):314. |
| [15] | 李海银 .Synthesis and characterization and applications of functionalized electromagnetic polyaniline composite(电磁功能化聚苯胺复合物的合成表征及应用)[D].长沙:湖南师范大学,2008. |
| [16] | Grigore L;Petty M C .Polyaniline filmes deposited by anodic polymerization[J].Journal of Materials Science,2003,14(5-7):389. |
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