Hydrophilic radiation cooling coating, and preparation method and application thereof

A hydrophilic coating technology, applied in anti-fouling/underwater coatings, reflection/signal coatings, alkali metal silicate coatings, etc., can solve the problem of inability to maintain radiation cooling for a long time, achieve low cost and broad application prospects , good hydrophilic 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 penet

Method used

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  • Hydrophilic radiation cooling coating, and preparation method and application thereof
  • Hydrophilic radiation cooling coating, and preparation method and application thereof
  • Hydrophilic radiation cooling coating, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 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 thickener (Shin-Etsu, Japan, hydroxyethyl cellulose), 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 22), 20 parts of zirconia (Oriental Zirconium Industry, purity 99%), 10 parts of zinc stannate (Jiangxi Renben Technology), 10 parts of barium sulfate (Henan Bafeng Chemical Industry), 10 parts of zinc phosphate (Hangzhou Sitan Pigment Chemical Industry) ), dispersed for 60 minutes. Then add 25 parts of potassium silicate (Shanghai Aorun Chemical Industry Co., Ltd.) and stir for 10 minutes, and filter through a 400-mesh screen to obtain the hydrophilic radiation cooling coating of the present invention.

Embodiment 2

[0043] 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. Then add 10 parts of precipitated silica (Evonik Degussa) at a speed of 10m / s 22), 10 parts of calcium molybdate (Oriental Zirconium Industry), 10 parts of zinc stannate (Degussa), 5 parts of calcium carbonate (Shandong Baishengcheng New Materials), 20 parts of magnesium oxide (Wuxi Zehui Chemical Industry, purity 99% ), dispersed for 60 minutes. Add 15 parts of potassium silicate (Shanghai Aorun Chemical Industry Co., Ltd.) and stir for 10 minutes, and filter through a 400-mesh sieve to obtain the hydrophilic radiation cooling coating of the present invention.

Embodiment 3

[0045] 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 water-based silica sol (Shandong Baite New Materials), 20 parts of zirconium silicate (Oriental Zirconium Industry), 20 parts of potassium titanate (Nantong Aoxin Electronics), and 10 parts of alumina ( Shandong Aluminum Industry, purity 99%), 10 parts of zinc phosphate (Hangzhou Stan Pigment Chemical Industry Co., Ltd.), dispersed for 60 minutes. Then add 30 parts of potassium silicate (Shanghai Aorun Chemical Industry Co., Ltd.) and stir for 10 minutes, and filter through a 400-mesh sieve to obtain the hydrophilic radiation cooling coating of the present invention.

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Abstract

The invention discloses a hydrophilic radiation cooling coating, and a preparation method and application thereof. The hydrophilic radiation cooling coating is prepared from, by weight, 15-30 parts ofalkali metal silicate, 5-10 parts of a hydrophilic silicon material, 20-40 parts of a sunlight reflecting material, 20-40 parts of an infrared radiation material, 3-5 parts of auxiliaries and 60-100parts of deionized water through high-speed dispersion and uniform mixing and filtering using a filter screen. A base material is coated with the hydrophilic radiation cooling coating, micropores contained in a hydrophilic coating layer formed after drying cooperate with a sunlight reflection material to generate 0.93-0.97 sunlight reflectivity, 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 hydrophilic 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...

Claims

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Application Information

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IPC IPC(8): C09D1/04C09D5/33C09D5/16C09D7/61B05D5/04B05D7/24
CPCC09D1/04C09D5/004C09D5/1687B05D5/04B05D7/24
Inventor 徐意
Owner 杭州净碳科技有限公司
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