Development of Novel Binary and Ternary Conductive Composites Based on Polyethylene, Low-melting-point Metal Alloy and Carbon Black

Abstract

This work presents the novel binary and ternary composite materials, based on a low-density polyethylene, metal alloy, which have a melting point close to those of polyethylene and carbon black. Oriented structures were obtained when high-viscosity polyethylene was used as a matrix material. Resistivity of the composite was investigated and nonohmic behavior of the ternary composites was revealed. Temperature dependence of the thermal capacity was studied. The IR (infrared) spectra of the composites were studied using an FTIR (Fourier-transform infrared) spectrophotometer. The presence of the alloy caused intensive oxidation of carbon black in the ternary composites as well.

Preparation and characterization of synergistically improved thermally conductive polyamide 6 with low melting point metal and low‐temperature expandable graphite

“…Besides, the liquid state and low viscosity of LMPMs above melting temperature would reduce the processing viscosity and device abrasion. However, most of the studies on Polymer/LMPM composites concentrated on enhancing the electrically conductive property . The investigations concerned the TCs of polymer/LMPM are rarely reported by far.…”

Novel method of low-melting metal micropowders fabrication

“…We studied the temperature dependence of thermal capacity of the composite and its components and established that the melting point of the metal alloy was T m = 160 • C [11,12]. Both Ipethene 320 and 4203 demonstrated peaks inherent for their glass transition at T s = 110 • C. It is readily seen that the blend has been processed under the temperature T pr > T m > T s , so both polymer and metal alloy were in a liquid state when extruded.…”

“…Then the polymer matrix is dissolved and metal powder is removed from the suspension. Extrusion processing of the composites based on polymers and low-melting-point alloys was reported first by Zhang and co-workers [9,10] and Bormashenko et al [11,12]. In those papers, rheology and electrical properties of such composites were discussed.…”

Synergistically improved thermal conductivity of polyamide-6 with low melting temperature metal and graphite

“…Zhang et al [21] investigated the rheological properties of polymer/LMTM and found that the LMTM filler decreases the melt viscosity at temperatures above the melting point. Until now, most of the studies on Polymer/LMTM composites concentrated on enhancing the electrically conductive property [1][2][3][4][5]. For instance, Michaeli and Pfefferkorn [1] prepared electrically conductive PA6 with copper fibers and SnZn alloy which was molten during processing.…”

“…Low melting temperature metal (LMTM), which have melting temperatures less than 231.9°C , are frequently used to prepare electrically conducive polymer composites since their high conductivity, liquid state and low viscosity during processing [1][2][3][4][5][6]. Simultaneously, polymeric materials have attracted increasing interests in the field of thermally conductive materials for the excellent processability, low density and low cost [7].…”