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A kind of phase change heat storage material and preparation method thereof

A phase change heat storage material and main material technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of easy overcooling of inorganic salt hydrates, reduced material cycle life, large thermal conductivity, etc. The effect of solving the phase separation phenomenon and improving the cycle stability

Active Publication Date: 2020-12-01
辽宁卓仑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, inorganic salt hydrate has the disadvantages of easy supercooling and phase separation, which makes the material easy to precipitate, reduces the cycle life of the material, and seriously restricts the practical application. there is a need to improve

Method used

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  • A kind of phase change heat storage material and preparation method thereof
  • A kind of phase change heat storage material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A phase change energy storage material, by weight percentage, including 88% of energy storage main material, 2.5% of thickener, 5% of nucleating agent, 2% of reinforcing material and 2.5% of additives, the additives include propylene glycol and petrolatum, The mass ratio of propylene glycol and petrolatum is 2:1.6, and the mass ratio of additives and thickeners is 1:1.

[0043] Wherein, in this embodiment, the main energy storage material is barium hydroxide octahydrate, the thickener is a mixture of xanthan gum and guar gum, the mixing mass ratio is 2:1, and the nucleating agent is calcium sulfate dihydrate, which enhances The material is nano copper powder.

[0044]The above-mentioned raw materials are mixed in a reaction container, heated after mixing, heated until the energy storage main material is completely melted, and then stirred evenly to obtain a phase change energy storage material.

Embodiment 2

[0046] A phase change energy storage material, by weight percentage, including 90% of energy storage main material, 3.3% of thickener, 2.7% of nucleating agent, 1% of reinforcing material and 3% of additives, the additives include propylene glycol and petrolatum, The mass ratio of propylene glycol and petrolatum is 2:1.7, and the mass ratio of additives and thickeners is 1:1.1.

[0047] Wherein, in this embodiment, the main energy storage material is barium hydroxide octahydrate, the thickener is sodium polyacrylate, the nucleating agent is potassium aluminum sulfate dodecahydrate, and the reinforcing material is nano-copper powder.

[0048] The above-mentioned raw materials are mixed in a reaction container, heated after mixing, heated until the energy storage main material is completely melted, and then stirred evenly to obtain a phase change energy storage material.

Embodiment 3

[0050] A phase change energy storage material, by weight percentage, including 70% of energy storage main material, 10% of thickener, 10% of nucleating agent, 5% of reinforcing material and 5% of additives, the additives include propylene glycol and petrolatum, The mass ratio of propylene glycol and petrolatum is 2:1.8, and the mass ratio of additives and thickeners is 1:2.

[0051] Wherein, in this embodiment, the main energy storage material is barium hydroxide octahydrate, the thickener is polyacrylic acid and its copolymer, the nucleating agent is barium chloride, and the reinforcing material is nano-copper powder.

[0052] The above-mentioned raw materials are mixed in a reaction container, heated after mixing, heated until the energy storage main material is completely melted, and then stirred evenly to obtain a phase change energy storage material.

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Abstract

The invention provides a phase-change heat storage material and a preparation method thereof, and belongs to the technical field of energy storage materials. The phase-change heat storage material comprises 70-95% of an energy storage host material, 0.01-7.5% of a thickening agent, 0.1-10% of a nucleating agent, 1-5% of a reinforcing material and 0.1-5% of additives, wherein the additives comprisepropylene glycol and petrolatum, the mass ratio of the propylene glycol to the petrolatum is (2-3):(1.6-1.8), and the mass ratio of the additive to the thickening agent is 1:(1-2). Due to addition ofappropriate additives, a phase separation phenomenon of the phase-change heat storage material is greatly improved, and at the same time, the thermal cycling performance is improved to aggravate a supercooling phenomenon.

Description

technical field [0001] The invention relates to the technical field of energy storage materials, in particular to a phase change heat storage material and a preparation method thereof. Background technique [0002] With the increasingly prominent problems of energy shortage and environmental pollution, people pay more and more attention to the utilization of new energy and the improvement of energy utilization. Energy storage technology, as an important method to solve the energy supply-demand imbalance problem, is favored by domestic and foreign enterprises and related research institutions. Among them, thermal energy storage based on phase change energy storage materials is one of the most widely used energy storage technologies. [0003] Phase change energy storage refers to the storage and release of energy by using phase change materials to absorb or release heat when the phase changes. Compared with sensible heat storage, it has the advantages of high energy storage d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 刘琦
Owner 辽宁卓仑科技有限公司