Anisotropic heat and electricity-conductive polymer composite material and preparation method thereof

Abstract

The invention belongs to the field of high polymer materials and relates to an anisotropic heat and electricity-conductive polymer composite material and a preparation method thereof. The invention provides a heat and electricity-conductive polymer composite material which is prepared from a polymer matrix and a two-dimensional heat and electricity-conductive filler through a multi-flux repeated injection molding process, wherein the two-dimensional heat and electricity-conductive filler is uniformly dispersed in the polymer matrix; the two-dimensional heat and electricity-conductive filler inthe composite material is parallel to a plane formed by the injection flow direction and the horizontal direction; the two-dimensional heat and electricity-conductive filler has a multilayer planar orientating direction along a normal direction; the horizontal direction is vertical to the injection flow direction; the normal direction is vertical to the plane formed by the injection flow direction and the horizontal direction. The composite material acquired according to the invention has anisotropic electricity conductivity and anisotropic heat conductivity, the preparation method is simpleand convenient, and the composite material can be continuously large-scale produced.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to an anisotropic two-dimensional conductive and thermally conductive functionalized polymer composite material and a preparation method thereof. Background technique [0002] With the rapid development of information technology, more and more attention has been paid to the heat dissipation of electronic devices with front-end Moore's Law. Therefore, the demand for functional materials with unidirectional conductivity and heat dissipation performance in the field of electronic technology is becoming increasingly strong. Polymer composites added with conductive and thermally conductive fillers (such as carbon black, carbon nanotubes, etc.) are increasingly used in the electrical conduction and Heat dissipation problem solved. In order to meet the unidirectional conduction and heat dissipation requirements of electronic devices, the research on the preparation of polymer-ba...

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Problems solved by technology

[0004] Although the above method solves the problem of preparing functionalized anisotropic polymer composites by injection molding, the design of the microstructure of the material is relatively complicated, requiring multiple steps of structural design, and the formation of the multilayer structure of the composite strongly depends on the resin material. The choice, and must rely on extremely harsh processing conditions such as ultra-high injection speed (high energy consumption) to be able to achieve

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