为制备具有高介电常数的复合材料,采用注射成型法制备了原始多壁碳纳米管(P-MWCNTs)/聚偏氟乙烯(PVDF)复合材料和石墨化多壁碳纳米管(G-MWCNTs)/PVDF复合材料.然后,对P-MWCNTs和G-MWCNTs进行了Raman光谱表征,对MWCNTs/PVDF复合材料进行了断面形貌、力学性能和电学性能测试.结果表明:G-MWCNTs比P-MWCNTs具有更高的纯度和结晶度,两种不同的MWCNTs都能均匀分散在PVDF基体中,添加MWCNTs会显著影响PVDF的力学行为.MWCNTs/PVDF复合材料的介电性能随MWCNTs含量的增加而提高,与P-MWCNTs相比,G-MWCNTs有效降低了复合材料的渗流阈值.当频率为100 Hz时,纯PVDF的介电常数为7.0;当P-MWCNTs的含量为5wt％时,复合材料的介电常数为23.8;当G-MWCNTs的含量为5wt％时,复合材料的介电常数高达105.0.注射成型法制备的MWCNTs/PVDF复合材料仍保持相对较低的电导率,进而导致复合材料的能量损耗较低,对电荷存储应用具有重要意义.
参考文献
| [1] | Yang, D.-D.;Xu, H.-P.;Wang, J.-R.;Wu, Y.-H..Nickel-multiwalled carbon nanotubes/polyvinylidene fluoride composites with high dielectric permittivity[J].Journal of Applied Polymer Science,20135(5):3746-3752. |
| [2] | L. Guadagno;B. De Vivo;A. Di Bartolomeo.Effect of functionalization on the thermo-mechanical and electrical behavior of multi-wall carbon nanotube/epoxy composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,20116(6):1919-1930. |
| [3] | 李相美;徐学诚;余维;顾英俊;石岩;成荣明;陈奕卫.碳纳米管/聚苯乙炔复合材料的导电性[J].复合材料学报,2006(5):70-74. |
| [4] | Wang, L;Dang, ZM.Carbon nanotube composites with high dielectric constant at low percolation threshold[J].Applied Physics Letters,20054(4):2903-1-2903-3-0. |
| [5] | Young Wan Nam;Woo Nyon Kim;Yong Han Cho;Dong Wook Chae;Gwang Ho Kim;Seung Pyo Hong;Seung Sang Hwang;Soon Man Hong.Morphology and Physical Properties of Binary Blend Based on PVDF and Multi-Walled Carbon Nanotube[J].Macromolecular symposia,20070(0):478-484. |
| [6] | K. T. S. Kong;M. Mariatti;A. A. Rashid.Effect of processing methods and functional groups on the properties of multi-walled carbon nanotube filled poly(dimethyl siloxane) composites[J].Polymer bulletin,20128(8):937-953. |
| [7] | 张琳琳;许钫钫;冯景伟;阮美玲.石墨化对碳纳米管结构与电学性能的影响[J].无机材料学报,2009(3):535-538. |
| [8] | Li-Jun Cui;Hong-Zhang Geng;Wen-Yi Wang.Functionalization of multi-wall carbon nanotubes to reduce the coefficient of the friction and improve the wear resistance of multi-wall carbon nanotube/epoxy composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,2013:277-282. |
| [9] | Yoon Jin Kim;Taek Sun Shin;Hyung Do Choi;Ho Gyu Yoon.Electrical conductivity of chemically modified multiwalled carbon nanotube/epoxy composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,20051(1):23-30. |
| [10] | Aline Bruna da Silva;Mohammad Arjmand;Uttandaraman Sundararaj;Rosario Elida Suman Bretas.Novel composites of copper nanowire/PVDF with superior dielectric properties[J].Polymer: The International Journal for the Science and Technology of Polymers,20141(1):226-234. |
| [11] | Mohammad Arjmand;Mehdi Mahmoodi;Simon Park;Uttandaraman Sundararaj.An innovative method to reduce the energy loss of conductive filler/polymer composites for charge storage applications[J].Composites science and technology,2013Apr.(Apr.):24-29. |
| [12] | Zhi-Min Dang;Jin-Kai Yuan;Jun-Wei Zha;Tao Zhou;Sheng-Tao Li;Guo-Hua Hu.Fundamentals, processes and applications of high-permittivity polymer-matrix composites[J].Progress in materials science,20124(4):660-723. |
| [13] | Jiongxin Lu;Wong C..Recent Advances in High-k Nanocomposite Materials for Embedded Capacitor Applications[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,20085(5):1322-1328. |
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