Enhanced breakdown strength of polymer composites by low filler loading and its mechanisms

2017 ◽  
Vol 111 (15) ◽  
pp. 153902 ◽  
Author(s):  
Shanjun Ding ◽  
Shuhui Yu ◽  
Xiaodong Zhu ◽  
Shenghui Xie ◽  
Rong Sun ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Breakdown Strength ◽  
Filler Loading

Effect of size and shape of nanofillers on electrostatic and thermal behavior of epoxy-based composites

2021 ◽  
pp. 096739112110324
Author(s):  
Mihir N Velani ◽  
Ritesh R Patel
Keyword(s):  
Thermal Properties ◽  
Breakdown Strength ◽  
Electrical Power ◽  
Filler Loading ◽  
Filler Concentration ◽  
Computational Technique ◽  
Electrical Power System ◽  
Potential Applications ◽  
Different Shapes

The role of nanodielectrics in the electrical power system is becoming crucial owing to its superior properties and potential applications in the field. Yet, the materials face limited breakdown strength and thermal properties. Further, the nanodielectrics have not found a comprehensive commercial platform because of the costly manufacturing process, and characterization and testing facilities. Therefore, to reduce the involved cost, in this work, an FE (finite element) based computational technique has been implemented to visualize the effect of shape, size, and filler concentration under the application of high voltage (HV). The epoxy-based nanodielectrics have been modeled incorporating a range of different shapes and size nanofillers—Al2O3, BN, BeO, SiO2, and TiO2. The paper discusses the 2D-analysis of the modeled nanodielectric in the steady-state electrostatic fields and thermal domains. It shows the insights of the nanofillers’ choice to ensure a perfect blend of electrical and thermal properties. The epoxy with square-shaped BeO fillers showed a rise in the electric field of nearly 1.5 times than unfilled neat epoxy, which indicates a significant surge in thermal conductivity at specific filler loading.

Effect of Filler Loading and Temperature on Electrical Resistivity of Stainless Steel Fiber/PA6 Conductive Polymer Composites

2012 ◽  
Vol 502 ◽  
pp. 101-105 ◽  
Author(s):  
Ming Hua Zhang ◽  
Wen Qiang Gu ◽  
Jin Tao Lei ◽  
Jian Hu Zhao ◽  
Bo Ma ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Electrical Resistivity ◽  
Polymer Composites ◽  
Steel Fiber ◽  
Conductive Polymer ◽  
Polyamide 6 ◽  
Filler Loading ◽  
Conductive Polymer Composites ◽  
Stainless Steel Fiber ◽  
Scanning Electron

The effect of loading of stainless steel fiber (SSF) and temperature on electrical resistivity of SSF/PA6 conductive polymer composites was investigated in this paper. The distribution of fibers in the composites was observed by means of scanning electron microscopy（SEM）. The experimental results show that the resistivity decreases closely along with the increase of SSF loading from 0 to 12 Wt. % and temperature from 20 to 200°C. It is shown by SEM that the fibers are dispersed homogeneously in the polyamide-6 matrix.

Characterization of the Thermo-Oxidative Stability of Filled Thermoplastic Polyetherimide

Materials ◽  
2003 ◽  
Author(s):  
V. A. Harinath ◽  
Jianzhong Lou ◽  
Jag Sankar ◽  
Leonard Uitenham
Keyword(s):  
High Temperature ◽  
Thermogravimetric Analysis ◽  
Oxidative Stability ◽  
Polymer Composites ◽  
Polymer Composite ◽  
Polymeric Composites ◽  
Filler Loading ◽  
Service Temperature ◽  
Temperature Conditions

Selected fillers were incorporated to prepare polytherimide composite. The influence of fillers on the thermo-oxidative stability of the composite was studied by thermogravimetric analysis. The results showed that at optical filler loading and characteristics, the polymer composite became superior in its thermo-oxidative stability that is very promising in widening the window of service temperature of polyimides for extremely high temperature conditions where most polymeric composites fail. The findings should prove useful in developing high-temperature polymer composites for aerospace and electronics applications.

scholarly journals The Influence of Compounding Parameters on the Electrical Conductivity of LDPE/Cu Conductive Polymer Composites (CPCs)

2021 ◽  
Vol 2080 (1) ◽  
pp. 012008
Author(s):  
Farah Badrul ◽  
Khairul Anwar Abdul Halim ◽  
MohdArif Anuar Mohd Salleh ◽  
Azlin Fazlina Osman ◽  
Nor Asiah Muhamad ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Polymer Composites ◽  
Low Cost ◽  
Conductive Polymer ◽  
Conductive Filler ◽  
Filler Loading ◽  
Electrically Conductive ◽  
Statistical Software ◽  
Conductive Polymer Composites ◽  
The Matrix

Abstract Low-linear density (LDPE) and copper (Cu) were used as main polymer matrix and conductive filler in order to produce electrically conductive polymer composites (CPC). The selection of the matrix and conductive filler were based on their due to its excellence properties, resistance to corrosion, low cost and electrically conductive. This research works is aimed to establish the effect of compounding parameter on the electrical conductivity of LDPE/Cu composites utilising the design of experiments (DOE). The CPCs was compounded using an internal mixer where all formulations were designed by statistical software. The scanning electron micrograph (SEM) revealed that the Cu conductive filler had a flake-like shape, and the electrical conductivity was found to be increased with increasing filler loading as measured using the four-point probe technique. The conductivity data obtained were then analysed by using the statistical software to establish the relationship between the compounding parameters and electrical conductivity where it was found based that the compounding parameters have had an effect on the conductivity of the CPC.

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