Thermal grease composition

Abstract

The invention relates to the field of thermal interface materials, and more particularly, provides a thermal grease composition, which contains the following components: (A) 100.0 parts by weight of thermally conductive filler, (B) 0.1 to 8.0 parts by weight of active solid silicone resin, (C) 0.1 to 15.0 parts by weight of active silicone oil, (D) 0.1 to 9.0 parts by weight of macromolecular polysiloxane, (E) 0.1 to 3.0 parts by weight of nano catalyst, and (F) 0.1 to 3.0 parts by weight of additive. The thermal grease composition provided by the invention has good thermal conductivity and using weatherability, can effectively solve the technical difficulty that the thermal grease composition in the prior art is pulverized and crushed and the thermal conductivity is therefore reduced as the service time increases. The manufacturing process has simple, convenient and easy steps and the thermal grease composition is suitable for large-scale match production.

Description

technical field [0001] The invention belongs to the field of thermal interface materials, and in particular provides a thermally conductive silicone grease composition. Background technique [0002] With the development of modern technology, electronic products are becoming more dense, miniaturized and efficient. Because it generates a large amount of heat energy (heat accumulation problem) during use, it directly affects its reliability and service life. Thermally conductive silicone grease, also known as thermal paste, is a thermal interface material in the form of ointment. Due to its good thermal conductivity, it is often used in this field to quickly conduct heat generated by electronic products. [0003] There have been many disclosures about the development of thermal conductive silicone grease, such as Chinese patent documents CN101294067A, CN1696194A, CN1534690A, CN1916105A, CN1733840A, CN101525489A. There are also a variety of products on the market, such as the ...

AI Technical Summary

Problems solved by technology

[0005] (1) For two-component thermal conductive silicone grease, since the base oil used is a reactive base oil, it is a two-component package, which must be prepared and used immediately, and it is often cross-linked in a short time after coating solidification, which brings a lot of inconvenience to on-site construction and later maintenance

[0006] (2) For the one-component heat-conducting silicone grease, since the base oil used is non-reactive base oil, generally the viscosity is low, the molecular chain is short and the diffusion rate is large, and the crawling phenomenon is serious. The oil and the thermally conductive filler often separate, and the direct result is the pulverization, cracking and poor thermal conductivity of the thermally conductive silicone grease coating; while using high-viscosity base oil, it is difficult to add thermally conductive filler with high solid content, and the thermal conductivity of the product is relatively poor

[0007] (3) There are large differences in performance and price of thermal conductive silicone grease products at home and abroad, that is, domestic products have relatively low thermal conductivity and cannot effectively solve the problem of heat accumulation, while foreign products have better thermal conductivity, but the price is high

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