Polymer-composite with high dielectric constant and enhanced absorption properties based on graphene–CuS nanocomposites and polyvinylidene fluoride

2013 ◽  
Vol 1 (39) ◽  
pp. 12115 ◽  
Author(s):  
Xiao-Juan Zhang ◽  
Guang-Sheng Wang ◽  
Yun-Zhao Wei ◽  
Lin Guo ◽  
Mao-Sheng Cao
Keyword(s):  
Dielectric Constant ◽  
Polymer Composite ◽  
Polyvinylidene Fluoride ◽  
High Dielectric Constant ◽  
Absorption Properties ◽  
Enhanced Absorption ◽  
High Dielectric

Effect of component content variation on composition and structure of activated carbon in PVDF:K2CO3

2019 ◽  
Vol 21 (5) ◽  
pp. 2382-2388
Author(s):  
Wenliang Zhu ◽  
Kohei Okada ◽  
Zhong Li ◽  
Jiliang Zhu ◽  
Elia Marin ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Dielectric Constant ◽  
Activated Carbon ◽  
Potassium Carbonate ◽  
Polyvinylidene Fluoride ◽  
High Dielectric Constant ◽  
Content Variation ◽  
Composition And Structure ◽  
Component Content ◽  
High Dielectric

Percolative composites consisting of potassium carbonate dispersed in polyvinylidene fluoride (PVDF) polymeric matrix have shown high dielectric constant and electrical conductivity due to the formation of chemically activated carbon interfaces in the composite.

scholarly journals On the Solubility and Stability of Polyvinylidene Fluoride

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1354
Author(s):  
Jean E. Marshall ◽  
Anna Zhenova ◽  
Samuel Roberts ◽  
Tabitha Petchey ◽  
Pengcheng Zhu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Dielectric Constant ◽  
Circular Economy ◽  
Polyvinylidene Fluoride ◽  
High Dielectric Constant ◽  
Widespread Application ◽  
Good Thermal Stability ◽  
Carbon Backbone ◽  
Crystal Phases ◽  
High Dielectric

This literature review covers the solubility and processability of fluoropolymer polyvinylidine fluoride (PVDF). Fluoropolymers consist of a carbon backbone chain with multiple connected C–F bonds; they are typically nonreactive and nontoxic and have good thermal stability. Their processing, recycling and reuse are rapidly becoming more important to the circular economy as fluoropolymers find widespread application in diverse sectors including construction, automotive engineering and electronics. The partially fluorinated polymer PVDF is in strong demand in all of these areas; in addition to its desirable inertness, which is typical of most fluoropolymers, it also has a high dielectric constant and can be ferroelectric in some of its crystal phases. However, processing and reusing PVDF is a challenging task, and this is partly due to its limited solubility. This review begins with a discussion on the useful properties and applications of PVDF, followed by a discussion on the known solvents and diluents of PVDF and how it can be formed into membranes. Finally, we explore the limitations of PVDF’s chemical and thermal stability, with a discussion on conditions under which it can degrade. Our aim is to provide a condensed overview that will be of use to both chemists and engineers who need to work with PVDF.

Nanostructures and dielectric properties of PVDF-based polymer films with high energy density and low energy losses

2015 ◽  
Vol 1740 ◽  
Author(s):  
Masahiko Ando ◽  
Naoki Yoshimoto ◽  
Yuichiro Yoshitake ◽  
Shuji Kato ◽  
Hidekazu Kodama ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
Polymer Films ◽  
Polyvinylidene Fluoride ◽  
High Dielectric Constant ◽  
Electrical Energy ◽  
High Energy ◽  
High Energy Density ◽  
Β Phase ◽  
High Dielectric

ABSTRACTBased on the investigation of mechanism for large dielectric losses in relaxor fluorinated polymers, polyvinylidene fluoride (PVDF) derivatives, a new nanostructure-controlled PVDF based polymer films with low dielectric loss, tanδ < 1% (0.6%), and high dielectric constant, εr = 13 at frequency of 1 kHz, was proposed for electrical energy storage applications. The high dielectric loss was mainly due to the electric-field induced α-β phase transition, and one dimensional extension of P(VDF-TrFE)-g-PEMA films was found to reduce the α phase component resulting in reduction of the dielectric loss while keeping the high dielectric constant. In-situ FTIR measurements suggested a possibility of further reducing the dielectric-loss.

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