A kind of thermally conductive silicone grease with self-adhesiveness and preparation method thereof

Abstract

The invention belongs to the field of heat-conducting silicone greases, and discloses self-adhesive heat-conducting silicone grease and a preparation method of the self-adhesive heat-conducting silicone grease. The heat-conducting silicone grease consists of the following components in parts by weight: 20-50 parts of a component A, 0.8-5 parts of a component B, 0.1-0.5 part of a catalyst, 60-120 parts of a heat-conducting filling material and 0.1-0.5 part of an inhibitor. The preparation method comprises the following steps: weighing the component A, the component B, the catalyst, the heat-conducting filling material and the inhibitor according to the weight parts of a formula, putting into a stirring kettle, and uniformly stirring at a high speed until flowing paste is obtained; then performing grinding and dispersion treatment on the flowing paste on a high-speed colloid grinder, and then slowly and finely grinding the paste on a three-roll grinder; finally performing vacuum pumping treatment to obtain the self-adhesive heat-conducting silicone grease. The heat-conducting silicone grease disclosed by the invention has high heat-conducting performance and good utilization and weather-resistant performance, and has the advantages of good self-adhesion, low diffusion rate, good rework performance, easiness in construction, and the like.

Description

technical field [0001] The invention belongs to the field of heat-conducting silicone grease, and in particular relates to a self-adhesive heat-conducting silicone grease and a preparation method thereof. Background technique [0002] With the development of science and technology, electronic products tend to be dense, miniaturized and high-density. Heat dissipation technology and heat dissipation materials. [0003] Thermally conductive silicone grease, commonly known as heat dissipation paste, is generally made of organic silicone as the main raw material, and is made of organic silicone grease compound made of materials with excellent heat resistance and thermal conductivity. It can be used for power amplifiers, transistors, electronic tubes, CPUs and other electronic components. Heat conduction and heat dissipation, so as to ensure the stability of electrical performance of electronic instruments and meters. [0004] There have been many reports on the development of t...

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Problems solved by technology

[0004] There have been many reports on the development of thermally conductive silicone grease, and there are some products on the market, but there are generally some shortcomings, such as the short cross-linking and curing time of two-component thermally conductive silicone grease, which must be prepared and used on site; Grease has low viscosity, high diffusivity, and fluidity, and it is easy to separate the base material from the thermally conductive filler, resulting in powdering and breaking of the thermally conductive silicone grease coating and poor thermal conductivity; while it is difficult to add high-solid-content silicone grease to a high-viscosity base material Thermally conductive filler, the product has poor thermal conductivity; thermally conductive silicone grease has low self-adhesiveness, poor reworkability, and is inconvenient for repeated sticking and maintenance

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