Graphene reinforced organic silicon heat-conductive material and preparation method thereof

Abstract

The invention discloses a graphene reinforced organic silicon heat-conductive material. The material is prepared from 15-35 parts of organic silicon resin, 25-55 parts of a heat-conductive agent, 1-7 parts of graphene, 0.1-2 parts of a platinum catalyst, 0.1-2 parts of hydrogen-containing silicone oil, 3-11 parts of a coupling agent, 0.5 parts of a flame retardant and 0-3 parts of a release agent. According to the invention, the graphene, the heat-conductive agent and the organic silicon resin are combined in a certain proportion, and the coupling agent, the hydrogen-containing silicone oil curing agent or other auxiliaries are added to form a formula, so that the heat conducting performance of the organic silicon material can be improved, the mechanical performance of the organic silicon material is improved, and the heat conducting performance of the product is further improved due to addition of the graphene, surfaces of the heat-conductive agent particles can be completely covered by the coupling agent due to the surface treatment mode of the heat-conductive agent in the preparation process, the compatibility of the heat-conductive agent and the organic silicon resin can be improved, and a high-quality high-performance product can be obtained.

Description

technical field

[0001] The invention relates to an organosilicon polymer material and a preparation method thereof, in particular to a graphene-enhanced organosilicon heat-conducting material and a preparation method thereof, belonging to the technical field of polymer materials. Background technique

[0002] Silicone products are based on silicon-oxygen (Si-O) bonds as the main chain structure, so silicone products have the characteristics of high thermal stability, high weather resistance, electrical insulation performance, low surface tension and low surface energy, and physiological inertia. , due to the above-mentioned excellent properties of silicone, its application range is very wide. It is not only used as a special material in aviation, cutting-edge technology, and military technology departments, but also in various sectors of the national economy. Its application range has expanded to: construction, electronics, textiles, automobiles, machinery, leather and paper...