Gypsum-based paraffin phase-changing energy-storing wall board and manufacture method thereof

Abstract

The invention relates to a gypsum-based paraffin phase-changing energy-storing wall board and a manufacture method thereof. Porous substrates and paraffin phase-changing materials are stirred and mixed at the temperature of 60-70 DEG C for keeping 15-20 hours, and the porous substrates fully absorb the paraffin phase-changing materials, so that the paraffin phase-changing materials can enter inner holes or interlay structures of the porous substrates, and the porous substrate paraffin phase-changing energy-storing composite material particles can be obtained. Gypsum powder and the porous substrate paraffin phase-changing energy-storing composite material particles are weighed in proportion, stirred and mixed and dry-mixed for 1-2 minutes at the temperature of 25-30 DEG C, and water weighed in proportion is added and then stirred for 5-10 minutes. The mixture is poured into a mould, demoulding is performed when a sample is cured after 2-3 hours, and then the gypsum-based paraffin phase-changing energy-storing wall board can be obtained. The gypsum-based paraffin phase-changing energy-storing wall board has the advantages of being low in price, capable of controlling indoor temperature fluctuation of buildings and reducing energy consumption of the buildings and the like.

Description

technical field [0001] The invention relates to the field of energy storage composite materials, in particular to a gypsum-based paraffin phase-change energy storage wallboard and a preparation method thereof. Background technique [0002] Improving energy efficiency is an important topic in the sustainable development of modern society. In the total energy consumption of modern society, building energy occupies a large proportion. In some countries, the construction field consumes almost one-third of the total energy of society. Improving the energy efficiency of buildings is therefore extremely valuable for improving the energy efficiency of society as a whole. [0003] Phase change materials (Phase Change Materials, PCM) refer to substances that change phase (morphology) with temperature changes and can absorb or release a large amount of latent heat, and keep the temperature constant during the phase change process. Latent heat energy storage using phase change materia...

AI Technical Summary

Problems solved by technology

However, due to the disadvantage of liquid phase change material leakage during the solid-liquid phase change process, its packaging must be considered in practice.

Some encapsulation methods are used in the prior art, such as macro container encapsulation, micro capsule encapsulation, micro cross-linking encapsulation and other methods, but these methods all have disadvantages such as complicated process and expensive materials.

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