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Phase change material

A technology of phase change materials and phase change wax, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of easy leakage of phase change wax, low strength and easy pulverization, low thermal conductivity, etc., and achieve thermal stability Good performance, high phase change enthalpy, fast heat conduction effect

Inactive Publication Date: 2020-11-24
北京赛菲斯技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problems of easy leakage of phase change wax when heated, low thermal conductivity and low strength and easy pulverization, and provide a phase change material

Method used

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  • Phase change material

Examples

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Effect test

Embodiment 1

[0022] see below figure 1 The method for preparing the phase change material of the present invention is exemplified. It should be understood that the following methods are only exemplary, and any phase change material prepared by any method that includes fillers of zero-dimensional materials and one-dimensional materials and / or two-dimensional materials of the present invention can achieve the effects of the present invention .

[0023] see figure 1 , first perform step S1: obtain the phase change wax of the first component, and heat the phase change wax to obtain the first liquid.

[0024] Exemplarily, the phase change wax of the first component is measured by a balance and poured into a beaker, and heated by an electric heater. Exemplarily, the phase change wax includes one or more of higher aliphatic hydrocarbons with 12-65 free carbon atoms, higher aliphatic alcohols with 8 to 20 carbon atoms, and alkane waxes with a melting point of -15 to 140°C mixture. In this emb...

Embodiment 2

[0061] A method for preparing the phase change material of the present invention comprises: taking 6g of phase change wax and heating and melting at 60°C; taking 0.5g of phenolic resin and adding it to the phase change wax liquid; taking 5mL of absolute ethanol and stirring at room temperature; taking 0.5g of silane distillate The coupling agent was dropped into the stirred absolute ethanol, and stirred fully and evenly; 1g of carbon quantum dots, 1g of carbon nanotubes, and 0.5g of graphene were added to the stirred absolute ethanol mixture, and continued to fully stir for 0.5h after completion; Pour enough of the above solution slowly into the melted phase change wax, continue to stir and heat for 10 minutes; add 0.5g of stabilizer to the mixed wax and stir well, then raise the heating temperature to 95 degrees and continue to stir until the mixture turns until it becomes a dry solid powder; the granule powder is extruded by extrusion molding under a compression molding envir...

Embodiment 3

[0063] A method for preparing the phase change material of the present invention comprises: taking 9g of phase change wax and heating and melting at 80°C; adding 0.1g of polyether resin dropwise into the phase change wax liquid; taking about 50mL of absolute alcohol and stirring at room temperature; taking Drop about 0.1g of dispersant into the stirring alcohol, stir fully and evenly; add 0.7g foam carbon into the stirring alcohol solution, and continue to stir fully for 0.5h after completion; slowly pour the well-stirred foam carbon alcohol solution into the melted In the phase change wax, continue to stir and heat for 0.5h after completion; add 0.5g of stabilizer to the mixed wax and stir thoroughly, then raise the heating temperature to 75 degrees and continue to stir until the mixed liquid turns into a solid powder ; The granule powder is molded by molding method, and molded under 3 tons of force under the molding environment of 60 ℃.

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Abstract

The invention relates to a phase change material. The phase change material comprises phase change wax, a cross-linking agent and a filler, wherein the filler comprises a zero-dimensional material anda one-dimensional material and / or a two-dimensional material. According to the phase change material, the zero-dimensional material and the one-dimensional material and / or the two-dimensional material form the filler, a three-dimensional internal network is formed in the filler, and the filler has internal structures in different scales, so that the zero-dimensional material and the phase changewax are effectively loaded and connected in series. The multi-dimensional composite phase change material has rich internal structures and functional units, so that the phase change material is good in thermal stability, high in phase change enthalpy and high in heat conduction speed, and can be widely applied to the field of heat management systems such as heat protection and waste heat recovery.

Description

technical field [0001] The invention belongs to the technical field related to phase change materials, and relates to a phase change material. Background technique [0002] Phase change materials can absorb energy from the environment and release energy to the environment, which can better solve the contradiction between energy supply and demand in time and space, thus effectively improving the utilization rate of energy. At the same time, the temperature of the phase change energy storage material remains basically constant during the phase change process, which can be used to regulate the temperature of the surrounding environment and can be used repeatedly. [0003] The research on phase change materials has been relatively mature, but most solid-liquid phase change materials, especially medium and low temperature phase change materials, have low thermal conductivity, which directly causes the biggest problem in the application of phase change materials in thermal managem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 丁娇娇李彬孟世明胡竞之
Owner 北京赛菲斯技术有限公司
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