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Phase-change heat insulation coating based on phase-change heat storage and preparation method of phase-change heat insulation coating

A thermal insulation coating and phase change heat storage technology, applied in the field of coatings, can solve the problems of insufficient adsorption of organic phase change materials, easy leakage, and affecting the temperature adjustment effect of phase change materials, etc., to achieve large latent heat of phase change and strong temperature adjustment ability , to ensure the effect of timeliness and effectiveness

Inactive Publication Date: 2019-02-22
HEFEI LONGYANG AGRI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phase change energy storage composite material absorbs the organic phase change material into the porous structure of expanded perlite by vacuum adsorption method, which has the problem that the adsorption of the organic phase change material is not tight enough, and it is easy to leak after multiple cycles, thus affecting Temperature adjustment effect of phase change materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of the paraffin / porous activated carbon-urea-formaldehyde resin phase change microcapsules of the present embodiment comprises the following steps:

[0035] (1) Put 15g of porous activated carbon in 20ml of acetone solution, ultrasonically clean it for 5 minutes, filter and wash with deionized water, and dry it in vacuum for later use;

[0036] (2) Weigh 6g of paraffin and 20g of deionized water, mix and heat, add 0.6g of Tween-80 and 0.2g of sodium dodecylbenzenesulfonate after the paraffin is completely melted, and emulsify the paraffin solution with a high-speed emulsifier, Then place it in a three-necked flask for heating in a water bath, and keep it warm at 70°C for 10 minutes to obtain a paraffin wax emulsion;

[0037] (3) Take 10g of melamine powder, 15ml of urea solution with a mass fraction of 35% and 30ml of deionized water into a 100mL three-necked flask, and add triethanolamine dropwise to adjust the pH of the system to 8, and raise th...

Embodiment 2

[0048] The preparation method of the paraffin / porous activated carbon-urea-formaldehyde resin phase change microcapsules of the present embodiment comprises the following steps:

[0049] (1) Put 25g of porous activated carbon in 30ml of acetone solution, ultrasonically clean it for 5 minutes, filter and wash with deionized water, dry it in vacuum and set aside;

[0050] (2) Weigh 10g of paraffin and 20g of deionized water, mix and heat, add 0.6g of Tween-80 and 0.2g of sodium dodecylbenzenesulfonate after the paraffin is completely melted, and emulsify the paraffin solution with a high-speed emulsifier, Then place it in a three-necked flask for heating in a water bath, and keep it warm at 70°C for 10 minutes to obtain a paraffin wax emulsion;

[0051] (3) Take 15g of melamine powder, 15ml of urea solution with a mass fraction of 35% and 30ml of deionized water into a 100mL three-necked flask, and add triethanolamine dropwise to adjust the pH of the system to 9, and raise the t...

Embodiment 3

[0062] The preparation method of the paraffin / porous activated carbon-urea-formaldehyde resin phase change microcapsules of the present embodiment comprises the following steps:

[0063] (1) Put 20g of porous activated carbon in 25ml of acetone solution, ultrasonically clean it for 5 minutes, filter and wash with deionized water, and dry it in vacuum for later use;

[0064] (2) Weigh 8g of paraffin and 20g of deionized water, mix and heat, add 0.6g of Tween-80 and 0.2g of sodium dodecylbenzenesulfonate after the paraffin is completely melted, and emulsify the paraffin solution with a high-speed emulsifier, Then place it in a three-necked flask for heating in a water bath, and keep it warm at 70°C for 10 minutes to obtain a paraffin wax emulsion;

[0065] (3) Take 13g of melamine powder, 15ml of urea solution with a mass fraction of 35% and 30ml of deionized water into a 100mL three-necked flask, and add triethanolamine dropwise to adjust the pH of the system to 8.5, and raise ...

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Abstract

The invention discloses a paraffin / porous activated carbon-urea resin phase-change microcapsule characterized in that a phase-change material in the microcapsule is paraffin, porous activated carbon is a carrier of the phase-change material, and urea resin is used as a capsule skin of the microcapsule. The invention further discloses a phase-change heat insulation coating based on phase-change heat storage and a preparation method of the phase-change heat insulation coating. The heat insulation coating disclosed by the invention is prepared by taking the paraffin / porous activated carbon-urea resin phase-change microcapsule as functional filler so as to have the advantages such as high phase-change latent heat, high energy storage capacity and high temperature regulating capacity; meanwhile, paraffin is adsorbed into pores of activated carbon by adopting cellular porous activated carbon, and the urea resin is coated with the surface of the activated carbon, so that the problem of paraffin leakage of the phase-change material is avoided; in addition, the pores in the porous activated carbon are intercommunicated, and thus, paraffin serving as the phase-change material can flow and besolidified in the pores of the activated carbon during solid-liquid conversion, so that the impact of paraffin to the coated urea resin is reduced.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a phase-change thermal insulation coating based on phase-change heat storage and a preparation method thereof. Background technique [0002] Building energy consumption occupies a large part of the total energy consumption of society. In order to solve the problem of building energy consumption, people turn their attention to phase change materials. [0003] Phase change materials are thermal functional materials that can absorb or release latent heat. Different from thermal insulation wall materials, phase change materials are not limited to thermal insulation in buildings. It can produce several times the heat insulation and heat preservation effect of the same amount of traditional heat preservation materials, and at the same time reduce the frequency of indoor air temperature fluctuations through the cycle of high temperature heat absorption and low temperature heat release,...

Claims

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Application Information

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IPC IPC(8): C09K5/06B01J13/14C09D125/14C09D131/04C09D123/08C09D7/62C09D7/61
CPCB01J13/14C08K2003/2241C09D7/61C09D7/62C09D123/0853C09D125/14C09D131/04C09K5/063C08K13/06C08K9/12C08K7/24C08K3/34C08K3/22Y02P20/141
Inventor 沈涛
Owner HEFEI LONGYANG AGRI TECH CO LTD