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High-performance water-based phase change coating and preparation method thereof

A water-based, high-performance technology, applied in the direction of microsphere preparation, epoxy resin coating, chemical instruments and methods, etc., can solve the problem of poor adhesion and coating stability of phase change microcapsules, decreased coating stability, and difficult stability Construction and other issues, to achieve the effect of improving heat transfer and heat absorption performance, improving stability, and meeting the requirements of use

Inactive Publication Date: 2020-11-10
XIANGYANG SUNVALOR AEROSPACE FILMS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there are not many applications of phase change microcapsules in water-based coatings, and in the prepared phase change slurry, the amount of microcapsules added is small, which does not greatly improve the internal enthalpy of the coating. The adhesion and coating stability of microcapsules are poor, and the increase in the amount added to the water-based coating will reduce the stability of the coating, making it difficult to achieve long-term stable construction

Method used

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  • High-performance water-based phase change coating and preparation method thereof
  • High-performance water-based phase change coating and preparation method thereof
  • High-performance water-based phase change coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0044] Add 5g of sodium dodecylbenzenesulfonate to 200g of deionized water, mix and stir at room temperature until the sodium dodecylbenzenesulfonate is completely dissolved, transfer the mixed system to an ultrasonic stirrer, add 200g of melamine Resin phase-change microcapsule powder and 20g of alumina were stirred ultrasonically for 10 minutes, and then 0.6g of polyether defoamer was added to obtain a dispersion;

[0045] Add 100g of water-based acrylate to the dispersion, stir at room temperature for 10min, after stirring, add 1g of polyurethane associative thickener HY-304D, stir, adjust the viscosity of the system to 3000-6000cp, and finally add 20g of ethanol to obtain a mixture, And the mixture was placed in a vacuum box at room temperature to defoam for 60 minutes to obtain a phase change coating.

Embodiment 2

[0047]Add 10g of alkylnaphthalene sulfonate to 300g of deionized water, mix and stir at room temperature until the alkylnaphthalene sulfonate is completely dissolved, transfer the mixed system to an ultrasonic stirrer, add 300g of melamine resin phase change Microcapsule powder and 40g of aluminum nitride were ultrasonically stirred for 20 minutes, and then 3g of polyether defoamer was added to obtain a dispersion;

[0048] Add 200g of water-based polyurethane to the dispersion, stir at room temperature for 60min, add 5g of methyl cellulose ether after stirring, stir to adjust the viscosity of the system to 3000-6000cp, finally add 50g of ethanol to obtain a mixture, and place the mixture in a vacuum Defoaming in the box at room temperature for 10 minutes to obtain a phase change coating.

Embodiment 3

[0050] Add 6 g of dihexadecyl dimethyl ammonium oxide to 220 g of deionized water, mix and stir at room temperature until the dihexadecyl dimethyl ammonium oxide is completely dissolved, transfer the mixed system to an ultrasonic stirrer, Add 220g of melamine resin phase change microcapsule powder and 30g of ultrafine graphite, stir ultrasonically for 30min, then add 1g of polyether defoamer to obtain a dispersion;

[0051] Add 120g of water-based epoxy resin to the dispersion, stir at room temperature for 20min, add 2g of ethyl cellulose ether after stirring, stir, adjust the viscosity of the system to 3000-6000cp, finally add 30g of ethylene glycol to obtain a mixture, and The mixture was placed in a vacuum box at room temperature to defoam for 20 minutes to obtain a phase change coating.

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Abstract

The invention provides a high-performance water-based phase change coating and a preparation method thereof. The high-performance water-based phase change coating is prepared from, by weight, 20-30 parts of phase change microcapsule powder, 10-20 parts of water-based resin, 20-30 parts of deionized water, 2-4 parts of heat conduction filler, 0.5-1 part of dispersing agent, 0.1-0.5 part of levelingthickener, 0.06-0.3 part of defoaming agent and 2-5 parts of slow drying agent; the preparation method comprises the following steps: performing ultrasonic stirring on the dispersing agent and the deionized water, adding the defoaming agent to obtain a dispersion liquid, adding the water-based resin, the leveling thickener and the slow drying agent to the dispersion liquid, and defoaming the mixture to obtain the phase-change coating. According to the invention, the phase-change microcapsule powder content in the phase-change coating is high, the enthalpy value of the dried coating is high, the heat conductivity is high, and the problem of poor stability is solved.

Description

technical field [0001] The invention relates to the technical field of phase change materials, in particular to a high-performance water-based phase change coating and a preparation method thereof. Background technique [0002] Phase change microcapsule material is a granular microsphere material formed by coating phase change materials such as alkanes and fatty acids with polymers. It has the advantages of small particle size, good stability, and convenient use. This technology solves the problem of liquefaction leakage after the phase change of the box change material in use, greatly expands the application range of the phase change material, and makes it more and more widely used in textiles, construction, and electronic heat dissipation. [0003] The application of phase change microcapsules in the coating process is also a good application method. It has different applications in textile post-treatment, building interior walls, and heat dissipation of electronic product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D175/04C09D121/00C09D163/00C09D7/63C09D7/47C09D7/43C09D7/61C09D7/62B01J13/02C09K5/06
CPCB01J13/02C08K2003/2227C08K2003/282C08K2201/014C08L2205/03C08L2205/035C09D121/00C09D133/04C09D163/00C09D175/04C09K5/063C09D7/43C09D7/47C09D7/61C09D7/62C09D7/63C09D7/70C08L71/00C08L75/04C08K13/06C08K9/10C08K5/01C08K5/05C08K3/22C08L1/28C08K3/28C08K5/053C08K3/04C08L1/286C08K7/24C08L33/04C08L21/00C08L1/284C08K9/06
Inventor 武鹏黄海龙李俊彬贾永华姜磊刘为群李航李凤宇
Owner XIANGYANG SUNVALOR AEROSPACE FILMS CO LTD
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