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Self-cleaning heat-insulation coating system for exterior wall

A heat-insulating coating and self-cleaning technology, applied in coatings, layered products, reflective/signal coatings, etc., can solve problems such as unsatisfactory effects

Active Publication Date: 2013-01-09
威士伯涂料(广东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this hydrophobic coating doesn't work well in the face of hydrophobic organic pollutants

Method used

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  • Self-cleaning heat-insulation coating system for exterior wall
  • Self-cleaning heat-insulation coating system for exterior wall
  • Self-cleaning heat-insulation coating system for exterior wall

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0240] The fourth coating composition for forming a hydrophobic putty layer was prepared as follows. Add cement, quartz sand, heavy calcium carbonate, EVA rubber powder, HCMC 75000S, starch ether Casucol 301, lignocellulose ZZC500 and hydrophobic agent Seal 80 into the dry powder putty mixing mixer in sequence, and stir evenly to obtain the paint of the putty layer combination. The amount of each component in the fourth coating composition for forming the putty layer in Example 1 is listed in Table 2.

[0241] Table 2. Composition and properties thereof for forming the fourth coating composition of putty layer

[0242]

[0243]

[0244] As can be clearly seen from the results in Table 2 above, the coating composition used to form the putty layer contains a silicone hydrophobic agent, and the putty layer formed by this coating composition has strong hydrophobic micropores, wherein the water absorption rate is only 1.6 g / 10min, which is far lower than the water absorptio...

Embodiment 2

[0251] The first coating composition for forming the hydrophobic undercoat layer was prepared as follows.

[0252] Under low-speed stirring at 350-450rpm / min, add 200g of deionized water, thickener HEC 250HBR, dispersant 120V, wetting agent CF-10, defoamer SN154, pH regulator BS-16 to the agitator, And stir for 5-10 minutes to make it even. Then add titanium dioxide R298, CELITE530, GF117, TA-800 and deionized water to the mixture, and stir at a high speed of 800-1250rpm / min for 20-30 minutes to form a uniform slurry. Finally, under medium-speed stirring at 500-700rpm / min, add defoamer CF-246, ethylene glycol, dodecyl ester, silicone hydrophobic agent BS-1001, emulsion combination (using pure acrylic acid) to the homogeneous slurry ester emulsion 2133 and styrene-acrylate emulsion RS-998A), BIT20 bactericide, W350 antifungal agent, thickener 278, silane coupling agent WD60 and the remaining part of deionized water until uniform, thus forming the second A coating composition....

Embodiment 3

[0263] A coating composition for forming a heat reflective topcoat is prepared as follows.

[0264] Add 160g of deionized water, thickener HEC 250HBR, dispersant 731A, 12g of defoamer SN154 and 2g of defoamer 122NS, pH regulator BS-16 to the stirrer under low-speed stirring at 350-450rpm / min. And stir for 5-10 minutes to make it even. Then add titanium dioxide R706, diatomaceous earth 499, solid ceramic microspheres W-610, hollow ceramic microspheres LJTF-01 and deionized water to the mixture, and stir at a high speed of 800-1250rpm / min for 20-30 minutes to form Uniform slurry. Finally, add 4g of defoamer CF-246 and 2g of defoamer SN 154, lauryl alcohol ester, A203 fungicide, FA39 fungicide, pure Acrylate emulsion GD56, thickener COATEX 3500, propylene glycol, silane coupling agent WD 60, and the remaining part of deionized water until uniform, thereby forming the second coating composition. The amount of each component in the second coating composition of Example 2 is list...

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Abstract

The invention relates to a self-cleaning heat-insulation coating system for an exterior wall. The self-cleaning heat-insulation coating system comprises (a) a hydrophobic undercoat layer, (b) a heat-reflecting surface coating layer and (c) a hydrophilic overcoat layer, wherein the hydrophobic undercoat layer is made from a first coating composition, the first coating composition contains aqueous emulsoid, the water permeability rate of the undercoat layer is 0.3 ml per 24 hours, the heat-reflecting surface coating layer is made from a second coating composition, the second coating composition contains a heat reflecting filler, the surface coating layer has the sun reflectance of at least 85% and / or the hemisphere emission ratio of at least 85%, the hydrophilic overcoat layer which is made from a third coating composition is coated on the heat-reflecting surface coating layer, and the third coating composition contains nano titanium dioxide and an aqueous solvent.

Description

technical field [0001] The present invention relates to a self-cleaning heat-insulating coating system for exterior walls, more specifically, to a self-cleaning coating system that can provide walls (especially exterior walls) with self-cleaning properties, reduce the heat transfer coefficient of building walls, and / or A self-cleaning thermal insulation coating system that improves the simulated energy-saving efficiency of building walls. Background technique [0002] At present, with the increasing development of the economy, the issue of energy consumption has attracted more and more attention. As a large energy consumer, building energy consumption accounts for about 30% to 40% of the national energy consumption every year. Therefore, how to reduce building energy consumption has become the most urgent and urgent problem to be solved in various energy conservation researches. [0003] Building energy saving is mainly reflected in two aspects: heat preservation and heat ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04F13/02E04F13/04E04B1/76C09D5/00C09D5/33C09D7/12C09D1/00C09D125/14C09D133/04B32B27/18B32B27/20
Inventor 熊荣段刚胡恒盛郭茜
Owner 威士伯涂料(广东)有限公司
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