Remendable conductive polyethylene composite with simultaneous restoration of electrical and mechanical behavior

Abstract

Conductive polymer composites can be customized through the addition of conductive fillers to the matrix. Fillers added to a conductive polymer composite modify the mechanical properties of the material as well as the electrical properties. Previous work with conductive polymer composites determined that conductive polymers with carbon‐based materials exhibit more brittle behavior when compared with unmodified polymers, reducing strains to failure of the material. A conductive polymer with self‐healing functionality could be healed to repair damage. This work demonstrates a conductive polyethylene composite, which can simultaneously restore electrical and mechanical performance when heated with induction. Because carbon‐based conductive composites cannot be sufficiently heated for healing, aluminum flake added to the composite served as the susceptor for induction heating. Conductive polyethylene specimens with 20% aluminum flake by volume demonstrated similar mechanical behavior both during the initial test and after healing.

Investigation of Cyclic Stability and Pyro-Resistive Properties in High-Density Polyethylene/Tungsten Carbide Composites Under Thermal and Electric Activation

“…This phenomenon arises from the interconnected network-like structure formed among the conductive fillers, creating efficient conduction paths. However, this conductive network disintegrates near the polymer matrix melting point, preventing the establishment of effective conduction channels and leading to a rapid increase in the resistivity of the composites. − Due to the PTC effect, the resistance of composite materials increases with Joule heating brought about by the passage of high currents through CPCs at the melting temperature transition point. The composite materials exhibit PTC behavior, effectively serving as current-limiting devices and regulating heating temperatures by adjusting the output energy .…”

Detection of compatibilizer efficiency in conductive polymer blends by impedance spectroscopy: Microstructure evaluation approach

“…1,2 These materials consist of conductive nanofillers which are dispersed, at an amount above the percolation threshold, in an insulating polymer matrix. [1][2][3][4] CPNCs have been studied for a wide variety of applications, including batteries, fuel cells, transducers, sensors, flexible transparent electrodes, and packaging materials to protect electronics from electrostatic discharge and electromagnetic interference. 3,4,6,7 The dispersion/distribution state of conductive nanofillers in an insulating polymer matrix is a critical factor for the development of CPNCs.…”

“…Conductive polymer nanocomposites (CPNCs) have emerged as a promising class of materials due to their unique combination of electrical, mechanical, and thermal properties 1,2 . These materials consist of conductive nanofillers which are dispersed, at an amount above the percolation threshold, in an insulating polymer matrix 1–4 .…”

“…Conductive polymer nanocomposites (CPNCs) have emerged as a promising class of materials due to their unique combination of electrical, mechanical, and thermal properties 1,2 . These materials consist of conductive nanofillers which are dispersed, at an amount above the percolation threshold, in an insulating polymer matrix 1–4 . CPNCs have been studied for a wide variety of applications, including batteries, fuel cells, transducers, sensors, flexible transparent electrodes, and packaging materials to protect electronics from electrostatic discharge and electromagnetic interference 3,4,6,7 .…”

Preparation of CeO 2 -PPy nanocomposites to improve the corrosion resistance of epoxy resin coatings

“…Conductive polymers have been intensively investigated for anti-corrosion elds due to their high conductivity, simple preparation method and environment-friendly 4,5 . In particular, the passivation effect of conductive polymers can signi cantly improve the corrosion resistance of coatings.…”