▎ 摘　　要

NOVELTY - The vacuum cavity soaking plate comprises an upper layer plate (1), a lower layer plate (2) and a liquid absorbing core (3). The upper layer plate and the lower layer plate are sealed into a vacuum cavity. The inner surface of the upper layer plate and the lower layer plate forming the vacuum cavity is provided with a capillary groove (4). The liquid absorbing core is sealed in the vacuum cavity. The upper layer plate and the lower layer plate are made of graphene material. The liquid absorbing core is made of porous graphene material. USE - The vacuum cavity soaking plate is used for a heat equalizing plate, which is a plate heat transfer device capable of performing phase change heat transfer. ADVANTAGE - The liquid absorbing core is made of porous graphene material, which does not chemically react with the fluid, greatly improving the environment adaptive capacity of graphene vacuum cavity soaking plate, and has long working reliability. The graphene material has a higher thermal conductivity than copper, which improves the radiating ability of the soaking plate. The common heat equalizing plate suitable temperature is small at not greater than 100degrees Celsius. The graphene vacuum cavity soaking plate has ultra-high thermal conductivity, and there is no risk of corrosion of vacuum cavity soaking plate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of vacuum cavity soaking plate. DESCRIPTION OF DRAWING(S) - The drawing shows an exploded view of vacuum cavity soaking plate. Upper layer plate (1) Lower layer plate (2) Liquid absorbing core (3) Capillary groove (4) Injection hole (5)