A carbon nanotube composite hydrogel-based phase change material and its preparation method and application

A carbon nanotube composite and phase change material technology, which is applied in the field of carbon nanotube composite hydrogel-based phase change materials and their preparation, can solve the problems of poor thermal conductivity, low use efficiency, short service life and the like, and achieves service life. Long, fast cold storage, good thermal conductivity

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

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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 carbon nanotube 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

[0031] A carbon nanotube composite hydrogel-based phase change material, in parts by weight, said material comprising 1 part of a carbon nanotube composite hydrogel base material, 90 parts of a phase change main energy storage agent, and 1 part of a nucleating agent; Wherein the carbon nanotube composite hydrogel substrate includes 0.2 mg of carbon nanotubes, surfactant, 0.1 g of monomer, 3 mg of initiator and crosslinking agent.

[0032] The surfactant comprises 50 mg of sodium dodecylbenzenesulfonate and 25 mg of dodecyldimethylbenzyl ammonium bromide.

[0033] The monomer is N-isopropylacrylamide, and the crosslinking agent is N,N'-methylenebisacrylamide.

[0034] The initiator is a redox system composed of 100 μL of ammonium persulfate with a mass fraction of 4% and 10 μL of tetramethylethylenediamine.

[0035] The phase change main energy storage agent is a sodium chloride solution with a mass concentration of 15%.

[0036] The nucleating agent is barium fluoride.

[0...

Embodiment 2

[0049] A carbon nanotube composite hydrogel-based phase change material, in parts by weight, said material comprising 5 parts of a carbon nanotube composite hydrogel base material, 98 parts of a phase change main energy storage agent, and 3 parts of a nucleating agent; Wherein the carbon nanotube composite hydrogel substrate includes 2 mg of carbon nanotubes, a surfactant, 0.2 g of a monomer, and 3 mg of an initiator and a crosslinking agent.

[0050] The surfactant comprises 56 mg of sodium dodecylbenzenesulfonate and 28 mg of dodecyldimethylbenzyl ammonium bromide.

[0051] The monomer is N-isopropylacrylamide, and the crosslinking agent is N,N'-methylenebisacrylamide.

[0052] The initiator is a redox system composed of 100 μL of ammonium persulfate with a mass fraction of 4% and 10 μL of tetramethylethylenediamine.

[0053] The phase change main energy storage agent is a potassium chloride solution with a mass concentration of 5%.

[0054] The nucleating agent is barium ...

Embodiment 3

[0067] A carbon nanotube composite hydrogel-based phase change material, in parts by weight, said material comprising 10 parts of a carbon nanotube composite hydrogel base material, 88 parts of a phase change main energy storage agent, and 5 parts of a nucleating agent; Wherein the carbon nanotube composite hydrogel substrate includes 3.5 mg of carbon nanotubes, a surfactant, 0.1 g of a monomer, 4 mg of an initiator and a crosslinking agent.

[0068] The surfactant comprises 50 mg of sodium dodecylbenzenesulfonate and 25 mg of dodecyldimethylbenzyl ammonium bromide.

[0069] The monomer is N-isopropylacrylamide, and the crosslinking agent is N,N'-methylenebisacrylamide.

[0070] The initiator is a redox system composed of 130 μL of ammonium persulfate with a mass fraction of 4% and 13 μL of tetramethylethylenediamine.

[0071] The phase change main energy storage agent is obtained by mixing 10% ammonium chloride and 5% sodium chloride solution at a ratio of 7:2.

[0072] The...

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PUM

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Abstract

The invention discloses a carbon nano tube composite hydrogel-based phase change material as well as a preparation method and application thereof. The carbon nano tube composite hydrogel-based phase change material is prepared from the following raw materials in parts by weight: 1-10 parts of a carbon nano tube composite hydrogel base material, 85-98 parts of a phase-change main energy storage agent and 1-5 parts of a nucleating agent. The carbon nano tube 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 carbon nano tube composite hydrogel-based phase change material is environmentally-friendly, non-toxic, harmless, safe and reliable; the preparation method of the carbon nano tube composite hydrogel-based phase change material is simple technology, and bond energy between the components is fully utilized for synthesizing 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 carbon nanotube 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, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06B65D65/38
Inventor 丘晓琳王汀
Owner JIANGNAN UNIV
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