采用溶胶-凝胶法制备锂锌铁氧体(Li0.435Zn0.195Fe2.37O4,LZFO),界面聚合法制备纯聚苯胺(PANI)和PANI纳米纤维/LZFO复合材料.通过SEM、XRD、FTIR和矢量网络分析(PNA)等对材料的物相、结构和吸波性能进行了表征和分析.结果表明:制备出的样品分别为PANI、LZFO和不同配比的PANI纳米纤维/LZFO复合材料.在2～18 GHz范围内,PANI纳米纤维/LZFO复合材料的电磁波反射率＜-10 dB的波段有2个,吸波性能较纯PANI和LZFO有了很大提高,并且拓宽了吸波频带,当PANI纳米纤维/LZFO复合材料中PANI纳米纤维的质量分数为10％,其综合吸波性能最佳,电磁波反射率＜-10 dB的波段分别为2.5～5.5 GHz波段和14.5～16.5 GHz波段,最大吸收峰可达到-33.8 dB.而PANI和LZFO在电磁波反射率＜-10 dB的波段只有1个.因此通过PANI纳米纤维接枝铁氧体,可调节电磁参数,提高材料的吸波性能.
参考文献
| [1] | Wang, C.;Shen, Y.;Wang, X.;Zhang, H.;Xie, A..Synthesis of novel NiZn-ferrite/Polyaniline nanocomposites and their microwave absorption properties[J].Materials science in semiconductor processing,20131(1):77-82. |
| [2] | 熊国宣;邓雪萍;曾东海;陆春华.羰基铁粉/聚甲基丙烯酸甲酯/聚苯胺复合吸波剂的制备与性能[J].复合材料学报,2008(4):35-39. |
| [3] | 孔德明;胡慧芳;冯建辉;赵华芬;刘祖黎;姚凯伦.掺杂聚苯胺吸波材料的研究[J].高分子材料科学与工程,2000(3):169-171. |
| [4] | Graeme A. Snook;Pon Kao;Adam S. Best.Conducting-polymer-based supercapacitor devices and electrodes[J].Journal of Power Sources,20111(1):1-12. |
| [5] | 毛卫民;方鲲;吴其晔;冯惠平.导电聚苯胺/羰基铁粉复合吸波材料[J].复合材料学报,2005(1):11-14. |
| [6] | 艾伦弘;蒋静.聚苯胺/ZnFe_2O_4纳米复合物的制备与表征[J].应用化学,2010(1):92-95. |
| [7] | Hongxia, J.;Qiaoling, L.;Yun, Y.;Zhiwu, G.;Xiaofeng, Y..Preparation and microwave adsorption properties of core-shell structured barium titanate/polyaniline composite[J].Journal of Magnetism and Magnetic Materials,2013:10-14. |
| [8] | Wenjie Wang;Sarang P. Gumfekar;Qingjie Jiao.Ferrite-grafted polyaniline nanofibers as electromagnetic shielding materials[J].Journal of Materials Chemistry, C. materials for optical and electronic devices,201316(16):2851-2859. |
| [9] | Ting, TH;Wu, KH.Synthesis, characterization of polyaniline/BaFe12O19 composites with microwave-absorbing properties[J].Journal of Magnetism and Magnetic Materials,201015(15):2160-2166. |
| [10] | Aphesteguy, J.C.;Damiani, A.;Digiovanni, D.;Jacobo, S.E..Microwave absorption behavior of a polyaniline magnetic composite in the X-band[J].Physica, B. Condensed Matter,201216(16):3168-3171. |
| [11] | 刘建华;周新楣;李松梅.羰基铁/导电聚苯胺微管复合材料的电磁性能[J].复合材料学报,2005(3):70-74. |
| [12] | 李黎明;徐政.吸波材料的微波损耗机理及结构设计[J].现代技术陶瓷,2004(2):31-34. |
| [13] | T. Nakamura;T. Miyamoto;Y. Yamada.Complex permeability spectra of polycrystalline Li-Zn ferrite and application to EM-wave absorber[J].Journal of Magnetism and Magnetic Materials,20031/3(1/3):340-347. |
| [14] | A.N. Yusoff;M.H. Abdullah.Microwave electromagnetic and absorption properties of some LiZn ferrites[J].Journal of Magnetism and Magnetic Materials,20042(2):271-280. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%