采用弓形法对多壁碳纳米管(MWCNTs)水泥基复合材料的吸波性能进行了实验研究.结果表明,当MWCNTs掺量为0.6％(质量分数)时,厚度为25mm的试样在2.9GHz处获得最强吸收峰值-28dB,并能够在2～8GHz范围内对出现在吸收峰值附近的电磁波进行充分吸收；厚度为35mm的试样在8～18GHz表现出良好的宽频吸波性能.当MWC-NTs掺量为0.9％(质量分数)时,水泥基复合材料在8～18GHz低于-10dB的带宽达到7.1GHz.力学强度测试结果表明MWCNTs在一定掺量范围内改善了水泥基材料的力学强度,但掺量的继续增大会导致力学强度的下降.MWCNTs掺量为0.9％(质量分数)的水泥砂浆抗压强度为60.2MPa,抗折强度为10.2MPa,虽然较空白试样有所下降,但仍有较高的力学强度.
参考文献
| [1] | 张雄,习志臻.建筑吸波材料及其开发利用前景[J].建筑材料学报,2003(01):72-75. |
| [2] | Chung D.D.L.; .Materials for Electromagnetic Interference Shielding[J].Journal of Materials Engineering and Performance,2000(3):350-354. |
| [3] | 陈雪刚,叶瑛,程继鹏.电磁波吸收材料的研究进展[J].无机材料学报,2011(05):449-457. |
| [4] | 谢卫红,申海峰,李顺才,刘宏伟.掺合材对水泥基材料雷达吸波效能实验研究[J].功能材料,2012(01):17-20. |
| [5] | 徐建国,李万富,黄长庆.基于遗传算法的介电梯度碳纳米管/环氧树脂吸波材料优化设计[J].功能材料,2010(z1):155-158. |
| [6] | Peng ZH;Peng JC;Peng YF;Ou YY;Ning YT .Investigation of the microwave absorbing mechanisms of HiPco carbon nanotubes[J].Physica, E. Low-dimensional systems & nanostructures,2008(7):2400-2405. |
| [7] | Haiyan Lin;Hong Zhu;Hongfan Guo .Investigation of the microwave-absorbing properties of Fe-filled carbon nanotubes[J].Materials Letters,2007(16):3547-3550. |
| [8] | Makeiff DA;Huber T .Microwave absorption by poly aniline-carbon nanotube composites[J].Synthetic Metals,2006(7/8):497-505. |
| [9] | I. W. Nam;H. K. Lee;J. B. Sim;and S. M. Choi .Electromagnetic Characteristics of Cement Matrix Materials with Carbon Nanotubes[J].ACI materials journal,2012(3):363-370. |
| [10] | I.W. Nam;H.K. Kim;H.K. Lee.Influence of silica fume additions on electromagnetic interference shielding effectiveness of multi-walled carbon nanotube/cement composites[J].Construction and Building Materials,2012:480-487. |
| [11] | Baomin Wang;Yu Han;Kai Song;Tingting Zhang .The Use of Anionic Gum Arabic as a Dispersant for Multi-Walled Carbon Nanotubes in an Aqueous Solution[J].Journal of nanoscience and nanotechnology,2012(6):4664-4669. |
| [12] | GJB2038A-2011.雷达吸波材料反射率测试方法[S].北京:中国航天科工集团第二研究院二O七所,2011. |
| [13] | Hongtao Guan;Shunhua Liu;Yuping Duan .Investigation of the electromagnetic characteristics of cement based composites filled with EPS[J].Cement & concrete composites,2007(1):49-54. |
| [14] | JGJ/T70-2009.建筑砂浆基本性能试验方法标准[S].北京:中国建筑工业出版社,2009. |
| [15] | Natio Y;Suetake K .Application of ferrite to electromagnetic wave absorber and its characteristics[J].IEEE Microwave Theory and Techniques Society,1971,19(01):65-72. |
| [16] | Xiuzhi Zhang;Wei Sun .Microwave absorbing properties of double-layer cementitious composites containing Mn–Zn ferrite[J].Cement & concrete composites,2010(9):726-730. |
| [17] | Kim S.S.;Jo S.B. .Complex permeability and permittivity and microwave absorption of ferrite-rubber composite at X-band frequencies[J].IEEE Transactions on Magnetics,1991(6):5462-5464. |
| [18] | D.D.L.Chung .Electromagnetic interference shielding effectiveness of carbon materials[J].Carbon: An International Journal Sponsored by the American Carbon Society,2001(2):279-285. |
| [19] | 赵东林,沈曾民.含碳纳米管微波吸收材料的制备及其微波吸收性能研究[J].无机材料学报,2005(03):608-612. |
| [20] | Chuang Wang;Kezhi Li;Hejun Li .Influence of CVI treatment of carbon fibers on the electromagnetic interference of CFRC composites[J].Cement & concrete composites,2008(6):478-485. |
| [21] | Chambers B. .Optimum design of a Salisbury screen radar absorber[J].Electronics Letters,1994(16):1353-1354. |
| [22] | Geng Ying Li;Pei Ming Wang;Xiaohua Zhao .Mechanical behavior and micro structure of cement composites incorporating surface-treated multi-walled carbon nanotubes[J].Carbon: An International Journal Sponsored by the American Carbon Society,2005(6):1239-1245. |
| [23] | Maria S. Konsta-Gdoutos;Zoi S. Metaxa;Surendra P. Shah .Multi-scale mechanical and fracture characteristics and early-age strain capacity of high performance carbon nanotube/cement nanocomposites[J].Cement & concrete composites,2010(2):110-115. |
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%