利用La(NO3)3和Ce(NO3)3掺杂的碳纳米管(MWCNTs-La(NO3)3和MWCNTs-Ce(NO3)3)作为吸收剂、聚氯乙烯(PVC)作为基体,制备出MWCNT-La(NO3)3(或Ce (NO3)3)/PVC复合材料.运用透射电子显微镜和X射线衍射仪对MWCNTs、MWCNTs-La(NO3)3、MWCNTs-Ce(NO3)3的微观结构进行表征分析,使用同步热分析仪和矢量网络分析仪对MWCNT/PVC、MWCNT-La(NO3)3/PVC、MWCNT-Ce(NO3) 3/PVC复合材料的热解行为和吸波性能进行测试分析.结果表明,在2～18 GHz频率范围内,适量掺杂La(NO3)3或Ce(NO3)3可以使MWCNT/PVC复合材料的吸波性能大幅度提高,而热解行为变化不明显.在反射率R＜-10 dB的范围内,MWCNT-Ce (NO3)3/PVC复合材料的吸收频宽(约为5.4 GHz)虽然不及MWCNT-La (NO3)3/PVC的吸收频宽(约为5.6GHz)宽,但是吸收频段和吸收峰峰值均向高频区域移动,有利于提高复合材料的高频吸波性能.
参考文献
| [1] | Wenting Wang;Qiaoling Li;Chuanbo Chang .Effect of MWCNTs content on the magnetic and wave absorbing properties of ferrite-MWCNTs composites[J].Synthetic Metals,2011(1/2):44-50. |
| [2] | Electromagnetic absorption properties of Sn-filled multi-walled carbon nanotubes synthesized by pyrolyzing[J].Materials Letters,2010(3):227. |
| [3] | Zeng Jun;Tao Peng;Wang Sen;Xu Jincheng .Preparation And Study On Radar-absorbing Materials Of Cupric Oxide-nanowire-covered Carbon Fibers[J].Applied Surface Science,2009(9):4916-4920. |
| [4] | 焦桓,周万城.雷达吸收剂研究进展[J].材料导报,2000(03):11-12. |
| [5] | 林海燕,朱红,郭洪范,於留芳.La2O3：Eu3+纳米晶充填碳纳米管吸波性能的研究[J].功能材料,2007(02):305-307. |
| [6] | 孙晓刚,余扬帆,刘勇,朱正吼.稀土改性碳纳米管宽带吸波材料[J].机械工程材料,2006(01):66-67,70. |
| [7] | Bi Cheng;Zhu Meifang;Zhang Qinghong et al.Electromagnetic wave absorption properties of multi-walled carbon nanotubes decorated with La-doped BaTiO3 nanocrystals synthesized by a solvothermal method[J].Materials Chemistry and Physics,2011,126:596-601. |
| [8] | Lan Zhang;Hong Zhu .Dielectric, Magnetic, And Microwave Absorbing Properties Of Multi-walled Carbon Nanotubes Filled With Sm_2o_3 Nanoparticles[J].Materials Letters,2009(2):272-274. |
| [9] | Pang Zuren.Macromolecle chemistry[M].北京:化学工业出版社,2002 |
| [10] | Li Bin.Flame retardation and smoke inhibtion of polyvinyl chloride(PVC)[M].哈尔滨:东北林业大学出版社,2000 |
| [11] | W.H.Starnes .Structural and mechanistic aspects of the thermal degradation of poly (vinyl chloride)[J].Progress in Polymer Science,2002(10):2133-2170. |
| [12] | Cuiling Hou;Tiehu Li;Tingkai Zhao;Tao Cheng;Wenjuan Zhang;Guangming Li .Microwave absorption and mechanical properties of La(NO_3)_3-doped multi-walled carbon nanotube/polyvinyl chloride composites[J].Materials Letters,2012(1):84-87. |
| [13] | Bogdal D;Prociak A.Microwave-enhanced polymer chemistry and technology[M].UK:Blackwell Publishing Ltd,2007 |
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%