▎ 摘　　要

NOVELTY - The sheet has a film shell (4) and a film encapsulation. A film package is fixed in an inner side of the film shell, and is provided with a deformed cavity on two sides. The film package fills with phase change material. A height direction interval is provided along the film package. The shape memory unit is fixedly connected with an upper and a lower boundary of a film package, and extrudes the phase change materials from a center to a periphery when a heating temperature is higher than a metamorphosis temperature. The shaped memory unit expands and recovers to an original shape when the heating is lower than the metamorphsis temperature. USE - Phase-change heat storage sheet and self-adaptive flexible radiating fin for radiating heat of high heat flow device in narrow complex space. ADVANTAGE - The sheet realizes the purpose of stably maintaining high heat transfer rate and constant temperature control by using phase change material heat expansion and contraction and shape memory fiber temperature change telescopic function, realizes high precision, strong stability, high heat flow heat transport control of constant temperature, becomes a very potential technical solution in the narrow complex space in high-heat flow device radiating and strengthening field. The sheet uses the flexible polymer material synthesis, so compared with the heat pipe and the steam cavity plate radiator, obviously thinning the thickness and improving the structure adaptability of the application scene. The self-adaptive flexible radiating sheet is integrally formed by the graphene macromolecule composite film on the upper and lower layers and the phase-change heat storage sheet in the middle. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the phase change heat storage sheet. 4Film shell 5Film packaging 6Solid phase change material 7Shape memory fibre