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Gel type radiation cooling coating, and preparation method and application thereof

A gel-type, coating technology, which is used in reflective/signal coatings, coatings, devices for coating liquids on surfaces, etc., can solve problems such as the inability to maintain radiation cooling for a long time, and achieves low cost, broad application prospects, and simple process. Effect

Active Publication Date: 2020-12-25
杭州净碳科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no film-forming substance on the surface of the coating, and dust can easily penetrate into the microsphere coating, which cannot maintain the radiation cooling effect for a long time

Method used

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  • Gel type radiation cooling coating, and preparation method and application thereof
  • Gel type radiation cooling coating, and preparation method and application thereof
  • Gel type radiation cooling coating, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add 100 parts of deionized water to the high-speed disperser, add 1 part of wetting agent (Shanghai San Nopco, 126), 2 parts of dispersant (Shanghai San Nopco, 5040) at a linear speed of 5m / s, 1 part of defoamer (Shanghai San Nopco, NXZ), stirred for 5 minutes. Then add 7 parts of precipitated silica (Evonik Degussa) at a speed of 10m / s 20 parts of alumina (Shandong Aluminum Industry, purity 99.5%), 10 parts of zinc oxide (Shandong Haishun New Materials, purity 99.7%), 10 parts of barium sulfate (Henan Bafeng Chemical Industry), 10 parts of zinc phosphate (Hangzhou Stan Pigment Chemical industry), disperse for 60min. Then add 8 parts of polyvinyl alcohol (Anhui Wanwei, 1788), 2 parts of glutaraldehyde (Laohekou Xinjing Technology, purity 50%), adjust the pH value to 3-4, stir for 20 minutes, and filter through a 400-mesh screen. The gel type radiation cooling coating of the present invention is obtained.

Embodiment 2

[0037] Add 80 parts of deionized water to the high-speed disperser, add 1 part of wetting agent (Shanghai San Nopco, 126), 1.5 parts of dispersant (Shanghai San Nopco, 5040) at a linear speed of 5m / s, 1.2 parts of thickener (Shin-Etsu, Japan, hydroxyethyl cellulose), 1 part of defoamer (Shanghai San Nopco, NXZ), stirred for 5 minutes. Add 10 parts of zinc aluminate (Shandong Jiqing Chemical Industry Co., Ltd.), 10 parts of calcium molybdate (Oriental Zirconium Industry), 10 parts of zinc stannate (Degussa), and 5 parts of calcium carbonate (Shandong Baisheng) at a speed of 10m / s. into a new material), 20 parts of titanium dioxide (Lomon Billions, BLR-698), dispersed for 60 minutes. Then add 5 parts of polyvinyl alcohol (Anhui Wanwei, 1788), 1 part of glutaraldehyde (Laohekou Xinjing Technology, purity 50%), adjust the pH value to 3-4, stir for 20 minutes, and filter through a 400-mesh screen. The gel type radiation cooling coating of the present invention is obtained.

Embodiment 3

[0039] Add 70 parts of deionized water to the high-speed disperser, add 0.5 part of wetting agent (Shanghai San Nopco, 126), 1 part of dispersant (Shanghai San Nopco, 5040) at a linear speed of 5m / s, 0.5 part of thickener (Shin-Etsu, Japan, hydroxyethyl cellulose), 1 part of defoamer (Shanghai San Nopco, NXZ), and stir for 5 minutes. Then add 10 parts of aluminum hydroxide (Anhui Wanran Technology), 20 parts of zirconium silicate (Oriental Zirconium Industry), 20 parts of potassium titanate (Nantong Aoxin Electronics), and 10 parts of alumina (Shandong) at a speed of 10m / s. Aluminum industry, purity 99%), 10 parts of zinc phosphate (Hangzhou Stan Pigment Chemical Industry Co., Ltd.), disperse for 60 minutes. Then add 30 parts of polyvinyl alcohol 1799 aqueous solution with 10% solid content (Anhui Wanwei), 1 part of glutaraldehyde (Laohekou Xinjing Technology, purity 50%), adjust the pH value to 3-4, stir for 20 minutes, and after 400 The purpose is to filter through a sieve ...

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Abstract

The invention discloses a gel type radiation cooling coating, and a preparation method and application thereof. The gel type radiation cooling coating is prepared from, by weight, 5-30 parts of a water-based polymer, 20-40 parts of a sunlight reflecting material, 20-40 parts of an infrared radiation material, 3-5 parts of an auxiliary agent and 60-100 parts of deionized water through high-speed dispersion and uniform mixing, and filtration by a filter screen. A base material is coated with the gel type radiation cooling coating according to the thickness of 200-800 [mu]m, a hydrogel coating layer formed by cross-linking after sealed packaging has the sunlight reflectivity of 0.92-0.96, and the sunlight reflection function can be recovered through clear water washing after pollution. The radiation cooling coating is simple in process and low in cost, is suitable for special shapes and planes, is suitable for occasions such as residential buildings, commercial buildings and industrial factory buildings, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of functional coatings, in particular to a gel-type radiation cooling coating and its preparation method and application. Background technique [0002] As a passive cooling material that does not require energy consumption, radiation cooling materials can achieve a cooling effect lower than atmospheric temperature under solar radiation, which can reduce the energy consumption of air conditioning, and can replace air conditioning, spraying, etc. under certain conditions. The energy saving effect is remarkable. It has great application value. However, the existing radiation cooling materials often contain metal coating materials, the process is complex, the price is expensive, and it is only suitable for flat surfaces. Chinese invention patent CN 201810238449.X discloses an outdoor all-weather solar reflection and infrared radiation cooling coating, by adding micron-sized spherical microbeads, micron-sized me...

Claims

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Application Information

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IPC IPC(8): C09D129/04C09D5/33C09D7/61C09D7/63C09D1/00C09D7/65B05D7/24B05D5/00
CPCC09D129/04C09D5/004C09D7/61C09D7/63C09D1/00C09D7/65B05D7/24B05D5/00C08K2003/2227C08K2003/2296C08K2003/3045C08K2003/2241C08K3/36C08K3/22C08K3/30C08K5/07C08K13/02C08K3/24C08K3/34
Inventor 徐意
Owner 杭州净碳科技有限公司
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