High-light-reflection phase-change heat storage coating for textiles and preparation method of high-light-reflection phase-change heat storage coating

A phase change heat storage and light reflection technology, applied in the field of textiles, can solve the problem that the coating cannot take into account the temperature adjustment performance, high light reflection performance and stain resistance, reduce VOC content, etc. Contamination performance, simple operation effect

Pending Publication Date: 2022-07-22
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a high light reflective phase change thermal storage coating for textiles and its preparation method to overcome the defects that the textile coatings in the prior art cannot take into account temperature regulation performance, high light reflection performance and stain resistance , the coating of the present invention takes into account both temperature regulation performance and high light reflection performance, the coating is gray and does not contain organic solvents, reduces the VOC content, and meets the requirements of green environmental protection

Method used

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  • High-light-reflection phase-change heat storage coating for textiles and preparation method of high-light-reflection phase-change heat storage coating
  • High-light-reflection phase-change heat storage coating for textiles and preparation method of high-light-reflection phase-change heat storage coating
  • High-light-reflection phase-change heat storage coating for textiles and preparation method of high-light-reflection phase-change heat storage coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Weigh 25g of octadecane, dissolve it in 300ml of water, add 3g of sodium dodecyl sulfate, emulsification at a high speed of 500r / min to form a microemulsion, and keep the temperature at 50°C. Add acetic acid to adjust the pH to 3, slowly add a mixed solution of 20 g of tetrabutyl titanate and 60 ml of ethanol, react for 10 hours, then filter, wash, and dry at 60° C. for 24 hours to obtain phase-change microcapsules. Phase change microcapsules, styrene sulfonic acid-maleic anhydride copolymer and deionized water were mixed in a mass ratio of 0.5:0.2:100, then ultrasonically treated for 0.5 h, centrifuged, washed, and dried in a vacuum oven at 60 °C for 24 h. The modified phase change microcapsules were obtained.

[0075] 1000Da polyethylene glycol and dimethylolpropionic acid were dewatered in a vacuum oven at 110°C for 4 hours, and hexamethylene diisocyanate was dewatered by molecular sieves for 4 hours. 74g hexamethylene diisocyanate, 220g poly Ethylene glycol and 120...

Embodiment 2

[0082] Weigh 27g of dodecanol, dissolve it in 300ml of water, add 1g of cetyltrimethylammonium bromide, emulsification at a high speed of 800r / min to form a microemulsion, and keep the temperature at 70°C. Add acetic acid to adjust the pH to 4, slowly add a mixed solution of 27g tetrabutyl titanate and 80ml ethanol, react for 15h, then filter, wash, dry, and dry at 70°C for 20h to obtain phase change microcapsules. Phase change microcapsules, styrene sulfonic acid-maleic anhydride copolymer and deionized water were mixed in a mass ratio of 1:0.4:130, then ultrasonically treated for 1.5 h, centrifuged, washed, and dried in a vacuum oven at 70 °C for 20 h. The modified phase change microcapsules were obtained.

[0083] Dewater 1000Da polyethylene glycol and dimethylolpropionic acid in a vacuum oven at 110°C for 4 hours, isophorone diisocyanate is dewatered with molecular sieves for 4 hours, and 90g isophorone diisocyanate, 200g polyethylene glycol, 120ml of acetone solvent was ...

Embodiment 3

[0090] Weigh 20g of octadecane and 15g of methyl palmitate, mix them evenly, dissolve in 400ml of water, add 5g of sodium dodecyl sulfate, emulsification at 1200r / min at high speed to form a microemulsion, and keep the temperature at 50°C. Add acetic acid to adjust the pH to 2, slowly add a mixed solution of 35 g of tetrabutyl titanate and 80 ml of ethanol, react for 24 hours, then filter, wash, and dry at 80°C for 12 hours to obtain phase-change microcapsules. Phase change microcapsules, styrene sulfonic acid-maleic anhydride copolymer and deionized water were mixed in a mass ratio of 2:0.6:150, then ultrasonically treated for 2 hours, centrifuged, washed, and dried in a vacuum oven at 80 °C for 12 hours to obtain Modified phase change microcapsules.

[0091] 2000Da polyethylene glycol and dimethylolpropionic acid were dewatered in a vacuum oven at 110°C for 4h, 4,4'-dicyclohexylmethane diisocyanate was dewatered with molecular sieves for 4h, and 52g of 4,4'-dicyclohexylmetha...

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Abstract

The invention relates to a high-light-reflection phase-change heat storage coating for textiles and a preparation method of the high-light-reflection phase-change heat storage coating. The coating comprises an outer coating, an inner coating and a middle layer between the outer coating and the inner coating, wherein the outer coating is a waterborne polyurethane modified layer; the middle layer is a waterborne polyurethane coating filled with a modified light reflecting material; and the inner coating is a coating which comprises the components of water-based phase change polyurethane and modified phase change microcapsules. The coating has high near-infrared reflectivity and hemispherical emissivity, the problem that the textile is overheated in summer is greatly reduced, the phase change enthalpy value of the coating in the coating is greatly increased, the temperature of the textile can be effectively controlled, and the situation that an existing textile is cold in winter and hot in summer is greatly relieved.

Description

technical field [0001] The invention belongs to the technical field of textiles, in particular to a high-light reflection phase-change heat storage coating for textiles and a preparation method thereof. Background technique [0002] Textiles are easily affected by the environment. In summer, the temperature of textiles rises sharply after being irradiated by the scorching sun, even reaching above 80°C; in winter, the temperature of textiles is very low. Therefore, improving the thermal management of textiles is essential to achieve better comfort, and the emergence of phase change heat storage technology and heat reflection technology is conducive to reducing energy consumption. [0003] Phase change heat storage technology refers to the characteristics of materials that absorb and release heat during the change of physical state to store and release heat. The temperature remains constant during the phase change process, so it plays a great role in the field of temperature c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/145D06N3/0059D06N3/0068D06N2209/146D06N2209/06
Inventor 管清宝徐晓飞游正伟
Owner DONGHUA UNIV
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