Nanocarbon material-based high-performance heat conducting material and preparation method thereof

Abstract

The invention discloses a nanocarbon material-based high-performance heat conducting material and a preparation method thereof. The preparation method comprises the following steps: mixing nanodiamond with graphine nanoply as a heat conducting filler, pretreating the heat conducting filler, constructing a filler network by utilizing the esterified nanodiamond coated graphine nanoply mixture in a polymer matrix, performing 'forced parallel connection' to form mutual contact and further form a heat conducting channel so as to realize better dispersion of the nanodiamond and graphine nanoply in a composite material. Heat conducting powder enters into the polymer matrix in a dispersing manner to forcibly form a mutually connected heat conducting channel network, heat is efficiently conducted through the shaking transfer of the heat conducting filler, the formed heat conducting network does not pass through the hollow part and is guided out directly from the heat conducting powder, so that the heat conducting efficiency is greatly improved. The prepared high heat conducting material can be used for forming heat radiation parts of various electrical appliances and automobiles, and has larger practical application values.

Description

technical field [0001] The invention belongs to the technical field of preparation of high-performance heat-conducting materials, and in particular relates to a polymer-based heat-conducting material based on nano-carbon materials and a manufacturing method thereof. Background technique [0002] Metal materials are thermally conductive materials in the traditional concept, but with the advancement of polymer science and technology, polymer materials have also become a new role in the field of thermal conductivity, which subverts the traditional concept of thermal insulation of polymer materials. Traditional heat-conducting parts are usually made of metal materials such as copper, iron and other alloys, and metal parts have disadvantages such as difficulty in processing and molding, high quality, etc., and high cost and manufacturing costs; and because polymer materials are easy to form and process, Therefore, the research of using polymer heat-conducting composite materials ...

AI Technical Summary

Problems solved by technology

Traditional heat-conducting parts are usually made of metal materials such as copper, iron and other alloys, and metal parts have disadvantages such as difficulty in processing and forming, high quality, and high cost and manufacturing costs; and because polymer materials are easy to form and process, Therefore, the research of using polymer heat-conducting composite materials instead of metal to prepare heat-dissipating products has attracted more and more attention. For example, in the invention patent CN102250481A, a crystalline resin matrix is ​​used, and at the same time, it is filled with an inorganic filler whose thermal conductivity is 10 to 1000 times higher than that of the matrix resin. And the selection of appropriate particle size to achieve less filler filling and higher thermal conductivity

However, the existing polymer thermally conductive composite materials generally have disadvantages such as low thermal conductivity, high thermal conductive filler filling, high material specificity, and high price, which restricts the wide application of polymer-based high-performance thermally conductive materials.

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