scholarly journals Mechanically Enhanced Electrical Conductivity of Polydimethylsiloxane-Based Composites by a Hot Embossing Process

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 56 ◽  
Author(s):  
Xiaolong Gao ◽  
Yao Huang ◽  
Xiaoxiang He ◽  
Xiaojing Fan ◽  
Ying Liu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Percolation Threshold ◽  
Polymer Composites ◽  
Flexible Electronics ◽  
Conductive Polymer ◽  
Hot Embossing ◽  
Electrically Conductive ◽  
Electrical Percolation ◽  
Flexible Polymer ◽  
Conductive Polymer Composites

Electrically conductive polymer composites are in high demand for modern technologies, however, the intrinsic brittleness of conducting conjugated polymers and the moderate electrical conductivity of engineering polymer/carbon composites have highly constrained their applications. In this work, super high electrical conductive polymer composites were produced by a novel hot embossing design. The polydimethylsiloxane (PDMS) composites containing short carbon fiber (SCF) exhibited an electrical percolation threshold at 0.45 wt % and reached a saturated electrical conductivity of 49 S/m at 8 wt % of SCF. When reducing the sample thickness from 1.0 to 0.1 mm by the hot embossing process, a compression-induced percolation threshold occurred at 0.3 wt %, while the electrical conductivity was further enhanced to 378 S/m at 8 wt % SCF. Furthermore, the addition of a second nanofiller of 1 wt %, such as carbon nanotube or conducting carbon black, further increased the electrical conductivity of the PDMS/SCF (8 wt %) composites to 909 S/m and 657 S/m, respectively. The synergy of the densified conducting filler network by the mechanical compression and the hierarchical micro-/nano-scale filler approach has realized super high electrically conductive, yet mechanically flexible, polymer composites for modern flexible electronics applications.

scholarly journals Mechanically Enhanced Electrical Conductivity of Polydimethylsiloxane-Based Composites by a Hot Embossing Process

2018 ◽  
Author(s):  
Xiaolong Gao ◽  
Yao Huang ◽  
Xiaoxiang He ◽  
Xiaojing Fan ◽  
Ying Liu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Percolation Threshold ◽  
Polymer Composites ◽  
Flexible Electronics ◽  
Conductive Polymer ◽  
Hot Embossing ◽  
Electrical Percolation ◽  
Flexible Polymer ◽  
Conductive Polymer Composites ◽  
Conducting Filler

Electrically conductive polymer composites are in high demand for modern technologies, however, the intrinsic brittleness of conducting conjugated polymers and the moderate electrical conductivity of engineering polymer/carbon composites have highly constrained their applications. In this work, super high electrical conductive polymer composites were produced by a novel hot embossing design. The polydimethylsiloxane (PDMS) composites containing short carbon fiber (SCF) exhibited an electrical percolation threshold at 0.45 wt%, and reached a saturated electrical conductivity of 49 S/m at 8 wt% of SCF. When reduced the sample thickness from 1.0 mm to 0.1 mm by the hot embossing process, a compression-induced percolation threshold occurred at 0.3 wt%, while the electrical conductivity was further enhanced to 378 S/m at 8 wt% SCF. Furthermore, the additional of a second nanofiller of 1 wt%, such as carbon nanotube or conducting carbon black further increased the electrical conductivity of the PDMS/SCF (8 wt%) composites to 909 S/m and 657 S/m, respectively. The synergy of the densified conducting filler network by the mechanical compression and the hierarchical micro-/nanoscale filler approach has realize super high electrical conductive yet mechanical flexible polymer composites for modern flexible 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.

Electrical conductivity and rheological properties of carbon black based conductive polymer composites prior to and after annealing

2021 ◽  
pp. 096739112110012
Author(s):  
Qingsen Gao ◽  
Jingguang Liu ◽  
Xianhu Liu
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Percolation Threshold ◽  
Rheological Properties ◽  
Network Formation ◽  
Loss Modulus ◽  
Conductive Polymer ◽  
Complex Viscosity ◽  
Electrical Percolation ◽  
Electrical Percolation Threshold

The effect of annealing on the electrical and rheological properties of polymer (poly (methyl methacrylate) (PMMA) and polystyrene (PS)) composites filled with carbon black (CB) was investigated. For a composite with CB content near the electrical percolation threshold, the formation of conductive pathways during annealing has a significant impact on electrical conductivity, complex viscosity, storage modulus and loss modulus. For the annealed samples, a reduction in the electrical and rheological percolation threshold was observed. Moreover, a simple model is proposed to explain these behaviors. This finding emphasizes the differences in network formation with respect to electrical or rheological properties as both properties belong to different physical origins.

Facile synthesis of silver-decorated reduced graphene oxide as a hybrid filler material for electrically conductive polymer composites

RSC Advances ◽  
2015 ◽  
Vol 5 (20) ◽  
pp. 15070-15076 ◽  
Author(s):  
Linxiang He ◽  
Sie Chin Tjong
Keyword(s):  
Graphene Oxide ◽  
Polymer Composites ◽  
Reduced Graphene Oxide ◽  
Graphite Oxide ◽  
Conductive Polymer ◽  
Facile Synthesis ◽  
Hybrid Filler ◽  
Electrically Conductive ◽  
Conductive Polymer Composites ◽  
Reduced Graphene

Nano silver-decorated reduced graphene oxide (Ag–RGO) sheets were synthesized by simply dissolving graphite oxide and silver nitrate inN,N-dimethylformamide and keeping the suspension at 90 °C for 12 h.

scholarly journals Current advancement in electrically conductive polymer composites for electronic interconnect applications: A short review

2019 ◽  
Vol 701 ◽  
pp. 012039
Author(s):  
Farah Badrul ◽  
Khairul Anwar Abdul Halim ◽  
Mohd Arif Anuar Mohd Salleh ◽  
Mohd Firdaus Omar ◽  
Azlin Fazlina Osman ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Conductive Polymer ◽  
Short Review ◽  
Electrically Conductive ◽  
Conductive Polymer Composites

Development of Carbon Nanotube Reinforced Conductive Polymer Composites for PEM Fuel Cells

2012 ◽  
Vol 729 ◽  
pp. 260-265
Author(s):  
M. Olah ◽  
Ferenc Ronkay
Keyword(s):  
Electrical Conductivity ◽  
Polymer Composites ◽  
Filler Content ◽  
Conductive Polymer ◽  
High Viscosity ◽  
Pem Fuel Cells ◽  
Conductive Polymer Composites ◽  
Multi Walled Carbon Nanotubes ◽  
Matrix Compound ◽  
Walled Carbon Nanotubes

Investigation of conductive polymer composites have been carried out using polypropylene (PP) and polyphenylene sulfonate (PPS) for matrix compound and graphite, carbon black and multi walled carbon nanotubes (MWCNT) for fillers. The comparison of these matrix materials with respect to the resulting electrical conductivity were investigated in depth. The effect of quantity of nanotubes and their dispersion on electrical conductivity and formability was also investigated. It has been found that PPS composites show much higher conductivity, however the high temperature needed for forming, and high viscosity in case of high filler content (50 wt% <) make the processing difficult, therefore the injection molding of the resulting material is currently not possible. Furthermore in contradiction to the literature the addition of MWCNT did not raise the conductivity significantly, therefore the focus have been kept on filler content instead.

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