Enhanced dielectric performance of PDMS-based three-phase percolative nanocomposite films incorporating a high dielectric constant ceramic and conductive multi-walled carbon nanotubes

2018 ◽  
Vol 6 (40) ◽  
pp. 10829-10837 ◽  
Author(s):  
Guifang Liu ◽  
Yi Chen ◽  
Minjie Gong ◽  
Xiaoyun Liu ◽  
Zhong-Kai Cui ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Nanocomposite Films ◽  
Three Phase ◽  
Dielectric Performance ◽  
Multi Walled Carbon Nanotubes ◽  
High Dielectric ◽  
Walled Carbon Nanotubes

Enhanced dielectric constant of PDMS incorporating chain-ball structured CCTO@MWCNT nanoparticles.

scholarly journals Correction: Chemical grafting of multi-walled carbon nanotubes on metal phthalocyanines for the preparation of nanocomposites with high dielectric constant and low dielectric loss for energy storage application

RSC Advances ◽  
2015 ◽  
Vol 5 (70) ◽  
pp. 57211-57211 ◽  
Author(s):  
Xuefeng Li ◽  
Wenhan Xu ◽  
Yunhe Zhang ◽  
Dan Xu ◽  
Guibin Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Metal Phthalocyanines ◽  
Low Dielectric ◽  
Energy Storage Application ◽  
Chemical Grafting ◽  
Multi Walled Carbon Nanotubes ◽  
High Dielectric ◽  
Walled Carbon Nanotubes

Correction for ‘Chemical grafting of multi-walled carbon nanotubes on metal phthalocyanines for the preparation of nanocomposites with high dielectric constant and low dielectric loss for energy storage application’ by Xuefeng Li et al., RSC Adv., 2015, 5, 51542–51548.

Significantly enhanced dielectric response in composite of P(VDF-TrFE) and modified multi-walled carbon-nanotubes

e-Polymers ◽  
2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Jingwen Wang ◽  
Nan Wei ◽  
Fang Wang ◽  
Congcong Wu ◽  
Shuqin Li
Keyword(s):  
Carbon Nanotubes ◽  
Dielectric Constant ◽  
Percolation Threshold ◽  
Polymer Matrix ◽  
Vinylidene Fluoride ◽  
Volume Fraction ◽  
Poly Vinylidene Fluoride ◽  
Multi Walled Carbon Nanotubes ◽  
High Dielectric ◽  
Walled Carbon Nanotubes

AbstractTo develop a high dielectric constant composite of poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] and multi-walled carbon-nanotubes (MWCNTs) with desirable homogeneity, MWCNTs were treated with a nitro-sulfuric acid by ultrasonication. Improvement of the dispersibility of chemically modified MWCNTs (a-MWCNTs) in polymer matrix, in comparison with that of unmodified MWCNTs in P(VDF-TrFE), was confirmed by field emission scanning electron microscopy (FESEM)-observed morphologies. Electric behavior of the composites with different volume fraction of dispersed carbon nanotubes phase can be described mainly by percolation theory. The percolation threshold (fc) of composites with a-MWCNTs (fc=0.0308) is larger than that of composites with MWCNTs (fc=0.0216) due to better dispersion of a-MWCNTs in polymer matrix and the reduction of aspect ratio of a-MWCNTs occurred in the modification procedure. The composite with 2.98 vol% (a volume fraction close to the percolation threshold) of a-MWCNTs has a dielectric constant of 592 at 100Hz and room temperature. The composite remains very flexible with an elastic modulus close to that of the parent copolymer.

Chemical grafting of multi-walled carbon nanotubes on metal phthalocyanines for the preparation of nanocomposites with high dielectric constant and low dielectric loss for energy storage application

RSC Advances ◽  
2015 ◽  
Vol 5 (64) ◽  
pp. 51542-51548 ◽  
Author(s):  
Xuefeng Li ◽  
Wenhan Xu ◽  
Yunhe Zhang ◽  
Dan Xu ◽  
Guibin Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Energy Storage ◽  
High Dielectric Constant ◽  
Metal Phthalocyanines ◽  
Low Dielectric ◽  
Energy Storage Application ◽  
Chemical Grafting ◽  
Multi Walled Carbon Nanotubes ◽  
High Dielectric ◽  
Walled Carbon Nanotubes

Phthalocyanines chemical grafting acidified multi-walled carbon nanotubes and PVDF composites exhibited high dielectric performances for energy storage applications.

scholarly journals Flexible high dielectric thin films based on cellulose nanofibrils and acid oxidized multi-walled carbon nanotubes

RSC Advances ◽  
2020 ◽  
Vol 10 (18) ◽  
pp. 10799-10805
Author(s):  
Jie Tao ◽  
Shun-an Cao
Keyword(s):  
Thin Films ◽  
Carbon Nanotubes ◽  
Dielectric Properties ◽  
Cellulose Nanofibrils ◽  
Nanocomposite Films ◽  
Dielectric Thin Films ◽  
Multi Walled Carbon Nanotubes ◽  
High Dielectric ◽  
Walled Carbon Nanotubes

The acid oxidized MWCNTs have excellent dispersity in CNF, resulting in outstanding dielectric properties of the flexible CNF/o-MWCNT nanocomposite films.

Preparation and Electrical Properties of the Polyimide/Multi-Walled Carbon Nanotubes (MWNTs) Nanocomposites

2011 ◽  
Vol 675-677 ◽  
pp. 1237-1240 ◽  
Author(s):  
Ming Yan Zhang ◽  
Xiao Ying Zhu ◽  
Peng He Diao ◽  
Wen Jia Wang ◽  
Xiao Dong Li
Keyword(s):  
Carbon Nanotubes ◽  
Dielectric Constant ◽  
Dielectric Loss ◽  
Loss Factor ◽  
In Situ Polymerization ◽  
Dielectric Loss Factor ◽  
Nanocomposite Films ◽  
Sharp Drop ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The polyimide/multi-walled carbon nanotubes (MWNTs) nanocomposite films were prepared by means of ultrasonic blending and in-situ polymerization. MWNTs were modified with mixed strong acid in order to improve the chemical compatibility between polyimide matrix and MWNTs. The effects of the incorporation of MWNTs on the electrical property were researched in this study. The results showed that with the increase of the content of acid-modified MWNTs, the dielectric strength decreased gradually and had a sharp drop when the addition content was close to 0.6 wt%, the dielectric constant and the dielectric loss factor increased obviously. With the rise of the test frequency, the dielectric constant declined slowly and the dielectric loss factor increased. The corona resistance time of the nanocomposite films was all higher than that of the pure polyimide.

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