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Shape-stabilized phase change material taking alumina hollow spheres as carrier and preparation method thereof

An alumina hollow sphere, shape-setting phase change material technology, applied in heat exchange materials, chemical instruments and methods, chemical industry and other directions, can solve the problems of low strength, poor thermal performance, and high manufacturing cost of matrix materials, and achieve high strength , The effect of fast thermal response and not easy to damage

Inactive Publication Date: 2021-02-12
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a shape-fixed phase-change material with alumina hollow spheres as a carrier to solve the problems of low strength, poor thermal performance and high manufacturing cost of the existing shape-set phase-change materials

Method used

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  • Shape-stabilized phase change material taking alumina hollow spheres as carrier and preparation method thereof

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Effect test

Embodiment 1

[0041] The present invention also provides a preparation method of a shape-fixed phase-change material using alumina hollow spheres as a carrier, which is specifically implemented according to the following steps:

[0042] Step 1, weighing the following raw material components by mass percentage: 38.39% paraffin wax, 46.67% aluminum oxide hollow ball, 14.94% styrene-acrylic emulsion, the sum of the mass percentages of the above components is 100%;

[0043] Step 2, put the aluminum oxide hollow ball and paraffin into the container and put it into the vacuum reactor, fasten the vacuum reactor, start the vacuum pump, and vacuumize the vacuum reactor. The relative vacuum pressure reaches -0.1MPa, and the holding time is 30min;

[0044] Step 3, after step 2 is vacuumed, open the pressure relief valve to restore the pressure in the vacuum reactor to normal pressure, take out the paraffin-absorbed aluminum oxide hollow ball and put it in a refrigerator not higher than 5°C for refrige...

Embodiment 2

[0048] The present invention also provides a preparation method of a shape-fixed phase-change material using alumina hollow spheres as a carrier, which is specifically implemented according to the following steps:

[0049] Step 1, weighing the following raw material components by mass percentage: 39.18% paraffin wax, 46.07% aluminum oxide hollow ball, 14.74% styrene-acrylic emulsion, the sum of the mass percentages of the above components is 100%;

[0050] Step 2, put the aluminum oxide hollow ball and paraffin into the container and put it into the vacuum reactor, fasten the vacuum reactor, start the vacuum pump, and vacuumize the vacuum reactor, so that the relative vacuum pressure in the vacuum reactor is -0.1MPa, holding time 60min;

[0051] Step 3, after step 2 vacuum treatment, open the pressure relief valve to restore the pressure in the vacuum reactor to normal pressure, take out the paraffin-absorbed aluminum oxide hollow ball and put it in a refrigerator not higher t...

Embodiment 3

[0055] The present invention also provides a preparation method of a shape-fixed phase-change material using alumina hollow spheres as a carrier, which is specifically implemented according to the following steps:

[0056] Step 1, weighing the following raw material components by mass percentage: 38.75% of paraffin wax, 46.40% of aluminum oxide hollow balls, 14.85% of styrene-acrylic emulsion, the sum of the mass percentages of the above components is 100%;

[0057] Step 2, put the aluminum oxide hollow ball and paraffin into the container and put it into the vacuum reactor, fasten the vacuum reactor, start the vacuum pump, and vacuumize the vacuum reactor. The relative vacuum pressure reaches -0.1MPa, and the holding time is 120min;

[0058] Step 3, after step 2 vacuum treatment, open the pressure relief valve to restore the pressure in the vacuum reactor to normal pressure, take out the paraffin-absorbed aluminum oxide hollow ball and put it in a refrigerator not higher than...

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Abstract

The invention discloses a shape-stabilized phase change material taking alumina hollow spheres as a carrier. The material is composed of the following raw material components in percentage by mass: 38.39%-39.18% of paraffin, 46.07%-46.67% of alumina hollow spheres and 14.74%-14.94% of styrene-acrylic emulsion, totaling 100%. The shape-stabilized phase-change material solves the problems of poor thermal performance, low strength and the like of the existing shape-stabilized phase-change material, and has the characteristics of excellent heat storage performance, high heat exchange efficiency and good strength. The preparation method provided by the invention solves the problems of poor thermal performance, complex preparation process and high cost of the existing shape-stabilized phase change material.

Description

technical field [0001] The invention belongs to the technical field of civil engineering materials, and in particular relates to a shape-fixed phase-change material using alumina hollow spheres as a carrier, and also relates to a preparation method of the shape-fixed phase-change material using alumina hollow spheres as a carrier. Background technique [0002] With the continuous improvement of people's requirements for indoor thermal environment comfort, the total energy consumption caused by building cooling and heating shows a trend of increasing year by year. Combining phase change materials (PCM) with conventional building materials to prepare building energy storage materials, and applying them to the envelope of solar buildings can improve the building's heat storage and thermal regulation capabilities, thereby improving the quality of the building's indoor thermal environment and reducing building energy consumption. Solid-liquid phase change materials are recognize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063Y02P20/10
Inventor 桑国臣杜小云张洋恺崔晓玲张磊朱轶韵
Owner XIAN UNIV OF TECH
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