A high-performance reflective heat-insulating and cooling coating

A heat insulation and cooling, high-performance technology, applied in reflection/signal coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve problems such as low reflectivity and single function

Active Publication Date: 2021-08-20
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of the existing heat-insulating and cooling coatings, such as low reflectivity, single function, and cooling range not exceeding 20°C, and provide a high-performance reflective heat-insulating and cooling coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Preparation method

[0027] (1) Preparation of bisphenol A epoxy resin

[0028] Install a stirrer, a return condenser and a thermometer on a 500 mL three-necked flask, add 11.4 g of bisphenol A, 46.5 g of epichlorohydrin, and 4.1 g of NaOH, mix and stir, slowly heat to 80°C, and stop the reaction after 3 hours of reaction. The product is light yellow; filter the reaction solution to remove the by-product NaCl, distill off excess epichlorohydrin (recovery) under reduced pressure (60-70°C), stop the distillation, pour the residue into a small beaker while it is hot, and get Pale yellow, transparent, viscous bisphenol A type epoxy resin.

[0029] (2) Preparation of polysilane-modified bisphenol A epoxy resin

[0030] The bisphenol A epoxy resin prepared by the silane coupling agent KH-550 was mixed according to the volume ratio of 1:12, and stirred at 1000rpm for 2 h to obtain the polysilane modified bisphenol A epoxy resin.

[0031] (3) Preparation of reflective hea...

Embodiment 2

[0034] 1. Preparation method

[0035] (1) Preparation of bisphenol A epoxy resin

[0036] Install a stirrer, a return condenser and a thermometer on a 500 mL three-necked flask, add 12.4 g of bisphenol A, 48.5 g of epichlorohydrin, and 4.2 g of NaOH, mix and stir, slowly heat to 80°C, and finish the reaction after 3 hours of reaction, the product Light yellow; filter the reaction solution to remove the by-product NaCl, distill off excess epichlorohydrin (recovery) under reduced pressure (60-70°C), stop distillation, pour the residue into a small beaker while it is hot, and obtain light Yellow, transparent, viscous bisphenol A type epoxy resin.

[0037] (2) Preparation of polysilane-modified bisphenol A epoxy resin

[0038] The bisphenol A epoxy resin prepared by the silane coupling agent KH-550 was mixed at a volume ratio of 1:10 and stirred at 1000 rpm for 1 h to obtain a polysilane-modified bisphenol A epoxy resin.

[0039] (3) Preparation of reflective heat insulation an...

Embodiment 3

[0042] 1. Preparation method

[0043] (1) Preparation of bisphenol A epoxy resin

[0044] Install a stirrer, return condenser tube and thermometer on the 500 mL three-neck flask. Add 10.4 g of bisphenol A, 42.5 g of epichlorohydrin, and 3.8 g of NaOH, mix and stir, slowly heat to 80°C, and finish the reaction after 3 hours of reaction. The product is light yellow. Filter the reaction solution to remove the by-product NaCl, distill off excess epichlorohydrin (recovery) under reduced pressure (60-70°C), stop the distillation, pour the residue into a small beaker while it is hot, and obtain a light yellow, transparent, Viscous bisphenol A type epoxy resin.

[0045] (2) Preparation of polysilane-modified bisphenol A epoxy resin

[0046] The bisphenol A type epoxy resin prepared by the silane coupling agent KH-550 was mixed according to the volume ratio of 1:15, and stirred at 1500 rpm for 2 h to obtain the polysilane modified bisphenol A type epoxy resin.

[0047] (3) Preparatio...

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PUM

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Abstract

The invention discloses a high-performance reflective heat-insulating and cooling coating, which is characterized in that it consists of component A and a curing agent in a mass ratio of 7 to 10:1; wherein component A consists of the following components in parts by mass : 30-60 parts of dispersion liquid, 1-5 parts of carbon nanotubes, 2-10 parts of aluminum-doped zinc oxide, 0.1-1 parts of additives; the dispersion liquid is composed of hollow glass microspheres, silver powder, ceramic fiber and polysilane The modified bisphenol A epoxy resin is composed of a mass ratio of 2-4:1:1:10-15. The coating prepared by the present invention can highly reflect the solar infrared rays and ultraviolet rays in the range of 400 nm to 2500 nm through the binding energy of heat-reflecting substances, hollow glass microspheres, nanoparticles, and heat-insulating resins, which can not only prevent the heat of the sun from being absorbed on the surface of objects Accumulative heating can be carried out, and it can automatically carry out heat radiation and cooling down, radiating the heat on the surface of the object into space, reducing the temperature of the object, its reflectivity exceeds 90%, and the maximum cooling can reach 40 degrees.

Description

technical field [0001] The invention belongs to the technical field of chemical coatings. Specifically, it relates to a high-performance reflective thermal insulation and cooling paint. Background technique [0002] As a means of heat insulation, thermal insulation coatings have great social and economic significance for industry and civil use. The heat insulation mechanism of the reflective heat-insulating and cooling coating is to reflect part of the visible light and near-infrared light in the sun to the external space through the reflection of the coating film, so that most of the energy of the sun shining on the coating film is reflected instead of being absorbed by the coating film. absorb. The thermal insulation performance of coatings is only related to the reflectivity of the coating film surface, but has nothing to do with the coating film thickness. Initially, heat-reflective coatings are reflective energy-saving coatings, also known as solar-reflective coating...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/33C09D5/10C09D7/61
CPCC08K2003/0806C08L2201/08C09D5/004C09D5/10C09D163/00C09D7/61C09D7/70C08K13/04C08K7/20C08K3/08C08K7/04C08K3/041
Inventor 李伟华刘睿曹文凯曾晖陈昊翔杜建伟
Owner SUN YAT SEN UNIV
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