Effect of Nano-fillers on Conductivity of Polyethylene/Low Melting Point Metal Alloy Composites  

作　　者：Gang Chen Xiao-hong Zhang 乔金樑 

机构地区：[1]College of Materials Science and Engineering,Beijing University of Chemical Technology [2]SINOPEC Beijing Research Institute of Chemical Industry

出　　处：《Chinese Journal of Polymer Science》2015年第3期371-375,共5页高分子科学（英文版）

摘　　要：A novel method for preparing conductive polyethylene （PE） composites has been developed. In the method, the powder of low melting point metal alloy （LMPA） is filled into the PE matrix by using twin screw extruder at a temperature below the melting point of the LMPA, and followed by a die drawing process at a temperature around the melting point of the metal alloy. It has been found that die drawing process, repeating the die drawing process and adding nano-fillers, such as montmorillonite （MMT） and multi-wall carbon nanotubes （MWCNTs）, all help reduce the metal particle size in the PE matrix, thus improve the conductivity of the composite. The conductivity improvement is attributed to an increased number of the smaller metal particles. Therefore, conductive composites of polymer/metal alloy/nano-filler with high conductivity are possible to be prepared by using the new method.A novel method for preparing conductive polyethylene （PE） composites has been developed. In the method, the powder of low melting point metal alloy （LMPA） is filled into the PE matrix by using twin screw extruder at a temperature below the melting point of the LMPA, and followed by a die drawing process at a temperature around the melting point of the metal alloy. It has been found that die drawing process, repeating the die drawing process and adding nano-fillers, such as montmorillonite （MMT） and multi-wall carbon nanotubes （MWCNTs）, all help reduce the metal particle size in the PE matrix, thus improve the conductivity of the composite. The conductivity improvement is attributed to an increased number of the smaller metal particles. Therefore, conductive composites of polymer/metal alloy/nano-filler with high conductivity are possible to be prepared by using the new method.

关 键 词：Conductive composites NANO-FILLER Metal alloy. 

分 类 号：O632.12[理学—高分子化学] TB33[理学—化学]