Preparation and properties of multi-walled carbon nanotubes/poly(vinylidene fluoride) high dielectric constant composites

被引：0

作者：

Wang, Jinlong ^{[1
]}

Wang, Wenyi ^{[1
]}

Shi, Jingyuan ^{[1
]}

Li, Yanling ^{[1
]}

Gao, Ningning ^{[1
]}

Liu, Zhengxin ^{[1
]}

Lian, Weitao ^{[1
]}

机构：

[1] Key Laboratory of Advanced Textile Composite of Ministry of Education, School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2015年 / 32卷 / 05期

关键词：

Composites; Dielectric properties; Graphitized multi-walled carbon nanotubes; Poly(vinylidene fluoride); Pristine multi-walled carbon nanotubes;

D O I：

10.13801/j.cnki.fhclxb.20150109.001

中图分类号：

学科分类号：

摘要：

In order to prepare high dielectric constant composites, pristine multi-walled carbon nanotubes (P-MWCNTs)/poly(vinylidene fluoride) (PVDF) composites and graphitized multi-walled carbon nanotubes (G-MWCNTs)/PVDF composites were prepared by injection molded method. Then G-MWCNTs and P-MWCNTs were characterized by Raman spectroscopy, and the fracture morphologies, mechanical properites and electrical properties of MWCNTs/PVDF composites were measured. The results show that G-MWCNTs have higher purity and crystallinity than those of P-MWCNTs. Two kinds of different MWCNTs both disperse in the PVDF matrix uniformly. The addition of MWCNTs affects the mechanical behaviors of PVDF significantly. The dielectric properties of MWCNTs/PVDF composites enhance with the content of MWCNTs increasing. Compared with P-MWCNTs, G-MWCNTs reduce the percolation threshold of the composites effectively. When the frequency is 100 Hz, the dielectric constant of pure PVDF is 7.0; when the content of P-MWCNTs is 5wt%, the dielectric constant of composites is 23.8; when the content of G-MWCNTs is 5wt%, the dielectric constant of composites reachs up to 105.0. The MWCNTs/PVDF composites prepared by injection molded method remain relatively low conductivity, thus resulting in a lower energy loss and having great significances for the charge storage applications. ©, 2015, Beijing University of Aeronautics and Astronautics (BUAA). All right reserved.

引用

页码：1355 / 1360

页数：5

共 19 条

[1]

Wang L., Preparation and properties of multi-walled carbon nanotube/polyvinylidene fluoride nanocomposites with high dielectric constant, (2005)

[2]

Yao S.H., The relationship between microstructure control and dielectric properties of multi-walled carbon nanotube/polyvinylidene fluoride nanocomposites with high dielectric constant, (2011)

[3]

Yang D.D., Xu H.P., Wang J.R., Et al., Nickel-multiwalled carbon nanotubes/polyvinylidene fluoride composites with high dielectric permittivity, Journal of Applied Polymer Science, 130, 5, pp. 3746-3752, (2013)

[4]

Li R., Preparation, morphology and properties of all-organic dielectric materials based on poly(vinylidenefluoride), (2010)

[5]

Shang J.W., Zhang Y.H., Lv F.Z., Recent progress of high dielectric constant polymer composites, Journal of Materials Engineering, 5, pp. 87-92, (2012)

[6]

Zhang Y.H., Li X.Y., Wang Q., Et al., Dielectric properties of a-MWNTs@PANI/sulfonated poly(aryletherketone) composites, Acta Materiae Compositae Sinica, 30, pp. 134-137, (2013)

[7]

Guadagno L., Vivo B.D., Bartolomeo A.D., Et al., Effect of functionalization on the thermo-mechanical and electrical behavior of multiwall carbon nanotube/epoxy composites, Carbon, 49, 6, pp. 1919-1930, (2011)

[8]

Li X.M., Xu X.C., Yu W., Et al., Electrical property of carbon nanotubes/polyphenylacetylene composites, Acta Materiae Compositae Sinica, 23, 5, pp. 70-75, (2006)

[9]

Wang L., Dang Z.M., Carbon nanotube composites with high dielectric constant at low percolation threshold, Applied Physics Letters, 87, 4, pp. 1-3, (2005)

[10]

Nam Y.W., Kim W.N., Cho Y.H., Et al., Morphology and physical properties of binary blend based on PVDF and multi-walled carbon nanotube, Macromolecular Symposia, 249, 1, pp. 478-484, (2007)

← 1 2 →