Aerogel-containing phase-change energy-storage thermal-insulation board, preparation method and application thereof

Abstract

The invention discloses an aerogel-containing phase-change energy-storage thermal-insulation board, a preparation method and application thereof. The phase-change energy-storage thermal-insulation board comprises a core board structure and a skin layer structure, wherein the core board structure comprises a uniform porous material serving as a reinforcing phase and a filling layer distributed in the uniform porous material in a filling mode, the filling layer comprises a phase-change aerogel filler and a thermal-insulation material, and the phase-change aerogel filler comprises an aerogel material with a uniform porous structure and a phase-change material filled and distributed in the pore channels of the aerogel material. According to the invention, the phase-change material and the aerogel material are combined, and the phase-change material can be limited by using the extremely strong capillary action force of the nano-scale pore channel, so that the leakage of the phase-change material and the adverse effect caused by non-uniform distribution of the phase-change material when the phase-change behavior occurs are avoided; and due to the extremely low density of the aerogel, the density of the phase-change energy-storage thermal-insulation board can be greatly reduced, so that the density of the phase-change energy-storage thermal-insulation board has a great application prospect in the fields of industrial and building heat insulation, military and aerospace, composite materials and the like.

Description

technical field [0001] The invention relates to a thermal insulation board, in particular to an aerogel-containing phase change energy storage thermal insulation board and a preparation method and application thereof, belonging to the technical field of building materials. Background technique [0002] With the introduction of the concepts of building energy-saving systems such as passive houses and zero-emission buildings, it shows that both at home and abroad are actively responding to high building energy consumption. played a very important role. As a part of building materials, the importance of thermal insulation materials is steadily increasing. Lightweight insulation materials have limited heat capacity and low heat storage capacity, which cannot achieve the purpose of efficient heat storage and heat preservation. Therefore, traditional insulation materials with low thermal conductivity cannot meet the actual use needs. [0003] At present, there is a phase-change ...

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Problems solved by technology

[0004] However, the thermal conductivity of the phase change material itself is relatively high. When it is added to the honeycomb panel, the overall thermal conductivity of the honeycomb panel will increase. Even if the traditional foam material is used as the phase change material carrier, the phase change material with high thermal conductivity will form a heat conduction network. Reduce the thermal insulation performance of honeycomb panels

In addition, during the phase change process, the physical state change of the phase change material will cause it to flow out of the honeycomb plate or porous medium, resulting in uneven distribution of the phase change material, which will adversely affect the performance of the phase change energy storage honeycomb composite plate

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