▎ 摘　　要

(CN217230606-U) NOVELTY - The invention relates to the technical field of heat conducting element, specifically relates to a high-efficiency heat conducting sheet, comprising a heat conducting substrate and a composite heat conducting substrate, the heat conducting substrate is formed with a containing space capable of filling the object; the composite heat conducting substrate is formed by powder, and permeated and filled in the containing space, the heat conducting substrate is a graphene substrate, the containing space is integrally formed in the graphite alkenyl body; The composite heat-conducting substrate is formed by metal powder, and is filled in the containing space. The invention combines the two by cold spraying, the powder through cold spraying the containing space for filling the sealed heat transfer structure, reliable structure, high heat transfer efficiency and strong integrity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the heat conducting sheet, which involves preparing heat conductive substrate, putting the prepared heat conductive substrate component into a conveying device for automatic conveying to a spraying device, adhering metal powder with the grain diameter of 0.001-0.01 mm to the surface of the heat conductive substrate component through cold spraying, penetrating into the accommodating space and filling the accommodating space. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the high-efficiency heat conducting sheet. 1Heat conductive substrate 2Composite heat conductive matrix 3Accommodation space