Intermetallic compound enhanced heat transfer gallium-based liquid metal composite thermal interface material and preparation method thereof

The invention relates to the technical field of thermal interface materials, in particular to a gallium-based liquid metal composite thermal interface material based on intermetallic compound enhanced heat transfer and a preparation method of the gallium-based liquid metal composite thermal interface material. The composite thermal interface material comprises gallium-based liquid metal and intermetallic compound particles. According to the method, the intermetallic compound particles obtained after alloying reaction of the liquid metal element and the high-thermal-conductivity metal are adopted as a thermal conduction reinforced phase to be doped into the gallium-based liquid metal, and the intermetallic compound particles have good wettability with the liquid metal and do not have alloying reaction with the liquid metal any more; according to the composite thermal interface material disclosed by the invention, the consumption of heat-conducting particles and liquid metal generated by alloying reaction is ef