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Organic phase change energy storage material and preparation method thereof

A technology of energy storage materials and phase change materials, which is applied in the field of low-temperature refrigeration composite phase change energy storage materials, can solve the problems of difficult storage and poor thermal conductivity, and achieve the effect of easy storage and good thermal conductivity

Active Publication Date: 2020-08-07
XIAN UNIV OF TECH
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide an organic phase change energy storage material, which solves the problems of poor thermal conductivity and difficult storage of organic phase change materials in the prior art

Method used

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  • Organic phase change energy storage material and preparation method thereof
  • Organic phase change energy storage material and preparation method thereof
  • Organic phase change energy storage material and preparation method thereof

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] The organic phase-change energy storage material of the present invention uses polyethylene glycol as a porogen to synthesize poly-N-isopropylacrylamide gel as a support material, and uses a binary organic compound as a phase-change material, and is adsorbed by the support material The binary compound phase change material is prepared to obtain an organic phase change energy storage material.

[0029] The above-mentioned binary organic compound selects the following three combinations:

[0030] 1) When the binary organic compound adopts n-capric acid-methyl laurate, n-capric acid and methyl laurate have good thermal properties (see Figure 5a and 5b ), and can coexist, that is, no chemical reaction occurs during the mixing process, and the Fourier transform infrared spectrum of the binary organic compound shows that no new functional...

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Abstract

The invention discloses an organic phase change energy storage material, and also discloses a preparation method of the organic phase change energy storage material. The preparation method comprises the following steps: 1) dissolving N-isopropylacrylamide, N,N'-methylene bisacrylamide and polyethylene glycol 1000 in deionized water together, and initiating a polymerization reaction in a redox system of ammonium persulfate and tetramethylethylenediamine to form poly(N-isopropylacrylamide) gel taking polyethylene glycol 1000 as a pore-foaming agent; 2) soaking in distilled water; 3) putting thefrozen poly(N-isopropylacrylamide) gel into a freeze dryer, and carrying out freeze drying, and 4) respectively soaking the freeze-dried poly(N-isopropylacrylamide) gel into a binary organic compoundfor swelling to obtain the organic phase change energy storage material. The material and the preparation method thereof are very suitable for fresh-keeping storage and transportation of fruits and vegetables.

Description

technical field [0001] The invention belongs to the technical field of low-temperature refrigeration composite phase change energy storage materials, relates to an organic phase change energy storage material, and also relates to a preparation method of the organic phase change energy storage material. Background technique [0002] Phase change materials are divided into organic phase change materials and inorganic phase change materials. Inorganic phase change materials include crystalline hydrated salts, molten salts, alloys or metals. These materials have high heat storage density, high thermal conductivity and low price, but they will appear supercooling and phase separation during use, which seriously affects Practical applications; organic phase change materials include paraffin, fatty acids, certain higher aliphatic hydrocarbons, alcohols, carboxylic acids and salts. These materials have small volume changes, thermal conductivity, and no supercooling and phase separat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/24C08K5/09C08K5/101C08K5/05C08K5/01C08J9/40C08J9/26C08F220/54C08F222/38C09K5/06
CPCC08K5/09C08K5/101C08K5/05C08K5/01C08J9/40C08J9/26C08F220/54C09K5/063C08J2201/0464C08J2333/24C08J2471/02C08F222/385C08L33/24Y02E60/14
Inventor 郭彦峰李妍付俊付云岗
Owner XIAN UNIV OF TECH
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