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Preparing method for comb-shaped-polymer phase change energy storage material

A technology of phase-change energy storage materials and comb-like polymers, applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of low enthalpy, narrow application range, poor processability of phase-change materials, etc.

Inactive Publication Date: 2018-07-17
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the phase change material uses a single polyethylene glycol as the phase change energy storage material, and the application range of the prepared product is relatively narrow, the enthalpy value is low, and the processability of the prepared phase change material is poor.

Method used

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  • Preparing method for comb-shaped-polymer phase change energy storage material
  • Preparing method for comb-shaped-polymer phase change energy storage material
  • Preparing method for comb-shaped-polymer phase change energy storage material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for preparing a comb polymer energy storage phase change material, comprising the following steps:

[0035] The DMF is subjected to vacuum distillation to remove water by means of vacuum distillation to obtain DMF after water removal for subsequent use.

[0036] 1) 130ml distilled water, 0.18mol acrylonitrile, 0.12mol maleic anhydride, and 0.006mol catalyst A ammonium persulfate-sodium bisulfite, wherein, in the catalyst ammonium persulfate-sodium bisulfite system, ammonium persulfate and sodium bisulfite The molar ratio of sodium bisulfate was 9:1, reacted under nitrogen atmosphere, stirring, and 60°C for 3h, separated the reaction product by suction filtration, washed 3 times with distilled water and ethanol, and dried in a vacuum oven at 40°C to obtain Primary product polyacrylonitrile maleic anhydride;

[0037] 2) Under the condition of nitrogen protection, add 120ml of anhydrous DMF solvent into the three-necked flask, and then add polyacrylonitrile malei...

Embodiment 2～4

[0042] Only change the mol ratio of polyacrylonitrile maleic anhydride and n-stearyl alcohol in embodiment 1 step 2), as embodiment 2~4, list is as follows:

[0043] Example

Embodiment 5-10

[0045] Only replace the n-stearyl alcohol that step 2) selects in embodiment 1) with different n-alkanols, as embodiment 5~10, list is as follows:

[0046]

[0047]The performances of the comb polymer energy storage phase change materials prepared in Examples 2 to 10 were tested using the same test method as in Example 1, and the obtained data are shown in Table 1:

[0048] Table 1 Phase change properties of comb polymer energy storage phase change materials under different conditions

[0049]

[0050]

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Abstract

The invention discloses a preparing method for a comb-shaped-polymer phase change energy storage material. The preparing method includes the following steps that 1) acrylonitrile, a raw material I, acatalyst A and distilled water are stirred in the nitrogen atmosphere and fully reacted at the temperature of 50 DEG C to 70 DEG C, a reaction product is cooled, washed and dried, and then a primary product is obtained, wherein the raw material I is maleic anhydride or acrylic acid or a mixture of maleic anhydride and acrylic acid; 2) the primary product, a raw material II, a catalyst B and an organic solvent after dewatering are stirred in the nitrogen atmosphere and fully reacted at the temperature of 60 DEG C to 100 DEG C, the product obtained in the step is separated out in water, and is washed and dried, and then the comb-shaped-polymer phase change energy storage material is obtained, wherein the raw material II is n-alkanol or polyethylene glycol or polyethylene glycol monomethyl ether or n-alkyl mercaptan. The comb-shaped-polymer phase change energy storage material prepared with the method is high in heat enthalpy value and good in settability, heat stability and processibility.

Description

technical field [0001] The invention relates to the field of phase change materials, in particular to a preparation method of a comb polymer phase change energy storage material. Background technique [0002] Phase change materials refer to a class of substances that can absorb or release energy by using their own structure and shape changes to achieve energy storage. Phase change materials can store or release a large amount of heat under the condition of keeping the temperature basically constant, so as to achieve the function of temperature regulation. Comb polymer phase change materials can be widely used in smart textiles, solar energy storage, Building materials and electronic equipment and many other fields. [0003] With the warming of the global climate, people are increasingly concerned about energy consumption, energy conservation and environmental protection. As a green and pollution-free organic phase change material, the comb-like polymer energy storage phas...

Claims

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Application Information

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IPC IPC(8): C08F8/14C08F220/44C08F222/06C08G81/02C09K5/06
CPCC08F8/14C08F220/44C08G81/025C09K5/063C08F222/06
Inventor 石海峰许红星王海霞李靖毛慧琴
Owner TIANJIN POLYTECHNIC UNIV
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