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A kind of graphene oxide composite hydrogel-based phase change material and its preparation method and application

A graphene composite, phase change material technology, applied in chemical instruments and methods, heat exchange materials, transportation and packaging, etc., can solve the problems of short service life, low use efficiency, poor thermal conductivity, etc., and achieve long service life. , rapid cold storage, good thermal conductivity

Active Publication Date: 2019-08-27
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved: In order to overcome the defects of poor thermal conductivity, low use efficiency and short service life of phase change materials in the prior art, and obtain a safe, reliable, long service life and fast cold storage phase change material, this The invention provides a graphene oxide composite hydrogel-based phase change material and its preparation method and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A graphene oxide composite hydrogel-based phase change material, in parts by weight, said material includes 1 part of graphene oxide composite hydrogel base material, 90 parts of phase change main energy storage agent, and 1 part of nucleating agent; Wherein the graphene oxide composite hydrogel base material comprises graphene oxide 0.72mg, chitosan 1g, volume concentration is 1% acid solution 60mL, grafting monomer 7.2g, initiator 2mL of 0.1g / mL, crosslinking agent 0.2g, acid-base neutralizer 15mL, precipitant 200mL.

[0030] The acid solution is an acetic acid solution.

[0031] The graft monomer is acrylic acid, the initiator is ammonium persulfate, the crosslinking agent is N,N'-methylenebisacrylamide, the acid-base neutralizer is 1mol / L sodium hydroxide, and the precipitation agent is absolute ethanol.

[0032] The phase change main energy storage agent is a sodium chloride solution with a mass concentration of 15%.

[0033] The nucleating agent is barium fluor...

Embodiment 2

[0047] A graphene oxide composite hydrogel-based phase change material, in parts by weight, said material comprising 5 parts of graphene oxide composite hydrogel substrates, 98 parts of phase change main energy storage agents, and 5 parts of nucleating agents; Among them, the graphene oxide composite hydrogel substrate includes graphene oxide 2.16mg, chitosan 3g, acid solution 60mL with a volume fraction of 1%, grafting monomer 7g, initiator 1mL of 0.1g / mL, crosslinking agent 0.2 g. Acid-base neutralizer 10mL, precipitation agent 200mL.

[0048] The acid solution is an acetic acid solution.

[0049] The graft monomer is acrylic acid, the initiator is ammonium persulfate, the crosslinking agent is N,N'-methylenebisacrylamide, the acid-base neutralizer is 1mol / L sodium hydroxide, and the precipitation agent is absolute ethanol.

[0050] The phase change main energy storage agent is a potassium chloride solution with a mass concentration of 5%.

[0051] The nucleating agent is...

Embodiment 3

[0065] A graphene oxide composite hydrogel-based phase change material, in parts by weight, said material includes 10 parts of graphene oxide composite hydrogel base material, 85 parts of phase change main energy storage agent, and 3 parts of nucleating agent; Wherein the graphene oxide composite hydrogel substrate includes graphene oxide 3.6mg, chitosan 2g, acid solution 60mL with a volume fraction of 1%, graft monomer 6g, initiator 2mL of 0.1g / mL, crosslinking agent 0.4 g. Acid-base neutralizer 14mL, precipitant 250mL.

[0066] The acid solution is an acetic acid solution.

[0067] The graft monomer is acrylic acid, the initiator is ammonium persulfate, the crosslinking agent is N,N'-methylenebisacrylamide, the acid-base neutralizer is 1mol / L sodium hydroxide, and the precipitation agent is absolute ethanol.

[0068] The phase change main energy storage agent is an ammonium chloride solution with a mass concentration of 10%.

[0069] The nucleating agent is diatomaceous e...

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Abstract

The invention discloses a graphene oxide composite hydrogel-based phase change material as well as a preparation method and application thereof. The graphene oxide composite hydrogel-based phase change material is prepared from the following raw materials in parts by weight: 1-10 parts of a graphene oxide composite hydrogel base material, 85-98 parts of a phase-change main energy storage agent and 1-5 parts of a nucleating agent. The graphene oxide composite hydrogel-based phase change material is good in heat-conducting property, long in service life and capable of realizing rapid accumulation of cold; the graphene oxide composite hydrogel-based phase change material is environmentally-friendly, non-toxic, harmless, safe and reliable; the preparation method of the graphene oxide composite hydrogel-based phase change material has the advantages that the technology is simple, and bond energy between the components is fully utilized to synthesize the phase change material with stable performance.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and relates to a packaging material suitable for cold chain transportation, in particular to a graphene oxide composite hydrogel-based phase change material and its preparation method and application. Background technique [0002] With the continuous advancement of science and technology in recent years, the cold chain transportation of fruits, vegetables, food and pharmaceutical products has been better developed. During transportation, special measures must be taken to keep the product at a certain temperature, and phase change materials are undoubtedly the best choice. Phase change materials can keep products at a certain low temperature for a certain period of time, thereby prolonging the shelf life of products and reducing the loss rate of products during transportation. Phase change materials need to have a suitable phase change temperature, a large phase change latent heat, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06C08F251/00C08F220/06C08F222/38C08F2/44C08K3/04B65D65/38
CPCB65D65/38C08F2/44C08F251/00C08K3/04C08K2201/011C09K5/066C08F220/06C08F222/385Y02E60/14
Inventor 丘晓琳王汀
Owner JIANGNAN UNIV
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