scholarly journals Dielectric properties and thermal conductivity of core-shell structured Ni@NiO/poly(vinylidene fluoride) composites

2017 ◽  
Vol 693 ◽  
pp. 1-8 ◽  
Author(s):  
Wenying Zhou ◽  
Ying Gong ◽  
Litao Tu ◽  
Li Xu ◽  
Wei Zhao ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Dielectric Properties ◽  
Vinylidene Fluoride ◽  
Core Shell ◽  
Poly Vinylidene Fluoride

CaCu3Ti4O12–PVDF polymeric composites with enhanced capacitive energy density

2015 ◽  
Vol 29 (10n11) ◽  
pp. 1540003 ◽  
Author(s):  
Xin Ouyang ◽  
Peng Cao ◽  
Weijun Zhang ◽  
Zhuofeng Liu ◽  
Zhaohui Huang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Dielectric Constant ◽  
Dielectric Properties ◽  
Melting Point ◽  
Energy Density ◽  
Vinylidene Fluoride ◽  
Dielectric Breakdown ◽  
Melt Blending ◽  
Capacitive Energy Storage ◽  
Poly Vinylidene Fluoride

CaCu 3 Ti 4 O 12 (CCTO)–poly(vinylidene fluoride (PVDF)) composites were prepared by melt blending and hot molding techniques. The addition of CCTO remarkably enhanced the dielectric properties and the thermal conductivity of PVDF composites, while the melting point of the PVDF composites (~170°C) was almost independent of the CCTO concentration. Based on the results of dielectric constant and dielectric breakdown voltage, the PVDF composite containing 40 vol.% CCTO fillers shows the optimized capacitive energy storage potential (7.81 J/cm3).

Preparation and dielectric properties of core–shell structured Ag@polydopamine/poly(vinylidene fluoride) composites

2015 ◽  
Vol 110 ◽  
pp. 126-131 ◽  
Author(s):  
Liang Zhang ◽  
Shuai Yuan ◽  
Shuo Chen ◽  
Dongrui Wang ◽  
Bao-Zhong Han ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Vinylidene Fluoride ◽  
Core Shell ◽  
Poly Vinylidene Fluoride

Dielectric Properties and Thermal Conductivity of Poly(vinylidene fluoride)-Based Composites with Graphite Nanosheet and Nickel Particle

2019 ◽  
Vol 19 (6) ◽  
pp. 3591-3596 ◽  
Author(s):  
Lirong Wu ◽  
Dandan Yang
Keyword(s):  
Thermal Conductivity ◽  
Dielectric Constant ◽  
Dielectric Properties ◽  
Dielectric Loss ◽  
Ac Conductivity ◽  
Vinylidene Fluoride ◽  
Filler Loading ◽  
Graphite Nanosheet ◽  
Dielectric Performance ◽  
Poly Vinylidene Fluoride

The nickel (Ni) particles and graphite nanosheet (GNS) filled poly(vinylidene fluoride) (PVDF) composites were prepared by solution blending and hot-press processing in the magnetic field. The influence of Ni particles and GNS fillers for the structure, morphology, AC conductivity, dielectric properties and thermal conductivity of composites was investigated. The results showed that the β-phase crystals of PVDF matrix was increased obviously. The AC conductivity, dielectric constant and dielectric loss of PVDF/Ni/GNS composite reached to 10−9 s/cm, 62 and 0.39 when the filler loading was 11 wt.% at 102 Hz, respectively. At the ratio of 15 wt.% filler, the AC conductivity of PVDF/Ni/GNS composite was vastly improved to 10−6 s/cm, however, the dielectric constant increased to ~80 and dielectric loss was over 600 at 102 Hz. By comparing the dielectric performance of PVDF/Ni/GNS, PVDF/Ni and PVDF/GNS composites, it is found that the parallel arrangement of the filler conduces to improve the dielectric properties of the composites. Furthermore, the thermal conductivity of PVDF/Ni/GNS composites increased with the increase of Ni and GNS contents and the value raised to over 0.5 W/mK when filler loading was 15 wt.%.

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