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Carbon fiber polyethylene glycol phase change composite material and preparation method thereof

A technology of phase change composite materials and polyethylene glycol, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of phase change materials application difficulties, flow deformation, shrinkage deformation, etc., and achieve the improvement of interface bonding problems, Pore ​​reduction and shape stabilization effect

Active Publication Date: 2021-06-29
上海万泽精密铸造有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since polymer phase change materials store energy by melting and absorbing heat, shrinkage deformation and flow deformation are prone to occur after the polymer material melts , which brings difficulties to the application of phase change materials

Method used

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  • Carbon fiber polyethylene glycol phase change composite material and preparation method thereof
  • Carbon fiber polyethylene glycol phase change composite material and preparation method thereof
  • Carbon fiber polyethylene glycol phase change composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The carbon fiber polyethylene glycol phase change composite material of this embodiment is prepared by the following method:

[0025] Step (a), mix polyethylene glycol (PEG1500) and calcium chloride at a mass ratio of 5:1, put them into ethanol, dissolve, and set aside;

[0026] Step (b), the carbon fiber felt (0.2 g / cm 3 ) into concentrated sulfuric acid solution and soaked at 80°C for 2 hours to remove impurities and oxidize the surface, take it out and dry it, put it into ethanol solution containing silane coupling agent, reflux at 80°C for 8 hours, take it out and dry it, and set it aside;

[0027] Step (c), dipping the treated carbon fiber felt into a solution of polyethylene glycol and calcium chloride, and the solution of polyethylene glycol and calcium chloride is adsorbed on the surface of the carbon fiber felt;

[0028] Step (d) put the impregnated carbon fiber mat in an oven to dry at 80°C for 24 hours, and then cure at 120°C for 2 hours, so that polyethylen...

Embodiment 2

[0033] The carbon fiber polyethylene glycol phase change composite material of this embodiment is prepared by the following method:

[0034] Step (a), mix polyethylene glycol (PEG2000) and calcium chloride at a mass ratio of 4:1, put them into ethanol, dissolve, and set aside;

[0035] Step (b), the carbon fiber felt (0.2 g / cm 3 ) into concentrated sulfuric acid solution and soaked at 80°C for 2 hours to remove impurities and oxidize the surface, take it out and dry it, put it into ethanol solution containing silane coupling agent, reflux at 80°C for 8 hours, take it out and dry it, and set it aside;

[0036] Step (c), dipping the treated carbon fiber felt into a solution of polyethylene glycol and calcium chloride, and the solution of polyethylene glycol and calcium chloride is adsorbed on the surface of the carbon fiber felt;

[0037] Step (d), put the impregnated carbon fiber felt in an oven to dry at 80°C for 24 hours, and then cure at 120°C for 2 hours, so that polyethyl...

Embodiment 3

[0041] The carbon fiber polyethylene glycol phase change composite material of this embodiment is prepared by the following method:

[0042] Step (a), mix polyethylene glycol (PEG800) and calcium chloride at a mass ratio of 4:1, put them into ethanol, dissolve, and set aside;

[0043] Step (b), the carbon fiber felt (0.2 g / cm 3 ) into concentrated sulfuric acid solution and soaked at 80°C for 2 hours to remove impurities and oxidize the surface, take it out and dry it, put it into ethanol solution containing silane coupling agent, reflux at 80°C for 8 hours, take it out and dry it, and set it aside;

[0044] Step (c), dipping the treated carbon fiber felt into a solution of polyethylene glycol and calcium chloride, and the solution of polyethylene glycol and calcium chloride is adsorbed on the surface of the carbon fiber felt;

[0045] Step (d), put the impregnated carbon fiber felt in an oven to dry at 80°C for 24 hours, and then cure at 120°C for 2 hours, so that polyethyle...

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Abstract

The invention relates to a carbon fiber polyethylene glycol phase change composite material and a preparation method thereof. The carbon fiber polyethylene glycol phase change composite material comprises the following components in parts by mass: 100 parts of polyethylene glycol, 20-100 parts of calcium chloride, 20-100 parts of carbon fiber felt and 0.5-3 parts of a coupling agent. Polyethylene glycol and calcium chloride can form a complexing system, so that the problem of melting deformation of the phase change material can be solved to a certain extent. The surface treatment of the carbon fiber felt can improve the interface bonding problem of the carbon fibers and the phase change material and improve a heat conduction path.

Description

technical field [0001] The invention relates to the technical field of polymer heat-conducting phase-change composite materials, in particular to a carbon fiber polyethylene glycol phase-change composite material with a three-dimensional network structure, stable shape and high thermal conductivity and a preparation method thereof. Background technique [0002] The polymer phase change material absorbs heat through melting when the temperature is high, and releases heat through recrystallization when the surrounding temperature decreases. During the process of endothermic or exothermic, the temperature of the phase change material remains within a certain range (melting point), Thereby ensuring the temperature stability of the surrounding environment. Polymer phase change materials can stabilize the ambient temperature within a certain temperature range, making them widely used in electronic refrigeration, building heating / cooling (indoor temperature control), floor radiant ...

Claims

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Application Information

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IPC IPC(8): C08L71/02C08K3/16C08K7/06C08K9/06C08K9/02C09K5/06
CPCC08K3/16C08K7/06C08K9/06C08K9/02C09K5/063C09K5/06C08K2003/162C08L71/02Y02E60/14
Inventor 陈博文李文戈吴新锋高旭谢金群
Owner 上海万泽精密铸造有限公司
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