A phase-change thermal conductive sheet and its manufacturing method, and a device for manufacturing a porous alumina skeleton

Abstract

The invention discloses a phase change heat conducting fin. The phase change heat conducting fin comprises a porous alumina framework. Organic phase change material is filled in holes of the porous alumina framework. The phase change heat conducting fin uses the porous alumina framework as a heat conducting framework filled with the organic phase change material inside. On the premise that the phase change heat conducting fin has high thermal conductivity, the organic phase change material fills interface gaps through phase change at lower temperature, and then greatly reduces interface thermal resistance, and thereby is an ideal thermal interface material applied to heat dissipation devices and the like. The invention further discloses a preparation method of the phase change heat conducting fin. The preparation method has the advantages of being simple in process, easy to operate, high in yield, gentle in reaction condition, low in energy consumption and the like, and is suitable for industrialized mass production. The invention further discloses a manufacturing device of the porous alumina framework. The manufacturing device of the porous alumina framework can guarantee good and stable proceeding of the electrolytic process of the porous alumina framework.

Description

technical field [0001] The invention belongs to the technical field of material science and engineering, and in particular relates to a phase-change heat conduction sheet, a manufacturing method, and a manufacturing device for a porous alumina skeleton. Background technique [0002] In recent years, environmental and resource issues such as the greenhouse effect, rapidly increasing environmental pollution, and rising fuel prices have greatly promoted the research on the effective use of energy storage and other topics. Energy storage not only reduces the imbalance between supply and demand, but also improves the performance and reliability of energy systems, playing an important role in storing energy. [0003] Phase change materials (Phase change materials, PCMs) are a class of high-tech materials developed in recent years; phase change materials can produce endothermic and exothermic effects in the process of their phase change, which can play the role of thermal energy st...

AI Technical Summary

Problems solved by technology

At present, the most used organic phase change material is paraffin, which has advantages such as large phase change latent heat, wide range of phase change temperature, and low price, and is widely used in phase change energy storage materials; however, paraffin organic phase change materials are still There are shortcomings such as small thermal conductivity, inability to shape and easy to overflow, so it can effectively overcome its shortcomings and improve the application of phase change materials. It is a research hotspot in the field of paraffin organic phase change materials.

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