Conductive composite material, preparation and use thereof

Abstract

The invention discloses a conductive composite material and a manufacturing method and an application thereof, comprising a second polymer and the conductive composite which is combined with the second polymer and is provided with continuous phase, the conductive composite is composed of a first polymer and conductive filler which is contained in the first polymer and forms a conductive network, fusion temperature of the second polymer is higher than the fusion temperature of the first polymer, the invention adopts the manufacturing methods of stretching and heat treatment, so that the conductive composite material has relatively low percolation threshold after processing and forming, in addition, in the process of the processing, the conductive composite material can still maintain most of the mechanical properties after the heat treatment at relatively high temperature, thus ensuring that the whole material has fine conductivity and mechanical properties and can be applied to anti-static products, electromagnetic shielding products or circuits. The invention features easy operation of the manufacturing method, good universality and relatively easy recovery of the conductive composite material, in addition, the invention eliminates the problem in the prior art that the recovery of the composite material is difficult as the high strength fiber is added to the composite material to increase strength of the composite material.

Description

technical field [0001] The invention relates to a conductive composite material, in particular to a conductive composite material and its preparation method and application. Background technique [0002] Conductive polymer materials are polymer materials with conductive functions. Polymer conductive materials have the characteristics of low density, easy processing, corrosion resistance, large-area film formation, and adjustable conductivity. It is an indispensable class of materials in the field of cutting-edge technology. [0003] Since the conductive polymer material has a wide range of industrial applications, it needs to be made into different shapes through different processing steps, such as injection molding, spinning, extrusion or stretching. During the above processing, the conductive network will be affected to varying degrees. During the processing of polymers and conductive fillers, the conductivity will decrease. Although the conductivity will slowly recover ...

AI Technical Summary

Problems solved by technology

However, heat treatment has an adverse effect on the mechanical properties of conductive polymer materials. At high temperatures, the molecular arrangement will be disordered and the mechanical properties of the material will be reduced.

Images