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Weatherability self-cleaning external wall coating material and its preparation method

An exterior wall coating, self-cleaning technology, applied in antifouling/underwater coatings, coatings, paints containing biocides, etc. Effects of chemical and thermal stability, low cohesive energy density, strong hydrophobicity and dust resistance

Inactive Publication Date: 2003-12-10
GUANGZHOU SUPER CHEM COATING CO LTDGUANGZHOU SUPER CHEM COATING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing acrylic coatings have the defects of easy back-sticking at high temperature and brittle cracking at low temperature, so it is difficult to meet the requirements
At present, this kind of building veneer brick or curtain wall glass decoration, veneer brick or curtain wall glass, due to the high-altitude fall and injury hazards caused by the aging of the adhesive, and urban light pollution and other hazards, are expressly prohibited by the relevant departments from being used in certain areas.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The formula is: (the total amount is 100 kg) 22 kg of tap water, GA-400.6 kg of ammonium polyacrylate wetting and dispersing agent, 16 kg of rutile titanium dioxide (CR-828), anatase nano-TiO 28 kg of powder, 5 kg of kaolin (3000 mesh), 3 kg of sericite (1250 mesh), 0.4 kg of silicone oil defoamer CF-246 of BLACKBURN company, 0.3 kg of hydroxyethyl cellulose thickener NATROSOL PLUS 330, Magnesium aluminum silicate thickener ATTAGEL50 0.1 kg, hydrophobic modified polyurethane thickener RM2020 0.4 kg, PH regulator 2-amino-2-methyl-1-propanol 0.2 kg, fungicide bayer isothiazole derivative + hydroxyl Methylurea 1,6 dihydroxy-2-5 dioxane 0.2 kg, antifungal agent Progiven 2-n-octyl-4-isothiazolin-3-one benzimidazole, 0.3 kg, antifreeze agent propylene glycol 2 kg, 1.5 kg of caking agent 2,2,4-trimethyl-1,3-pentanediol methyl ethyl butyrate, 40 kg of silicon acrylic emulsion. The preparation process steps are as follows: ① first add dispersion medium water into the stainless ...

Embodiment 2

[0035] A new commercial building, because it is a large-scale and high-rise building, uses this product for exterior wall coating. The formula is (total weight: 100 kg): 23 kg of tap water, ammonium polyacrylate wetting and dispersing agent H-1000.5 kg, 20 kg of rutile titanium dioxide (CR-828), anatase nano-TiO 2 5 kg of powder, 5 kg of kaolin (3000 mesh), 3 kg of sericite, 2 kg of wollastonite powder (900 mesh), 0.4 kg of silicone oil mixture defoamer CF-246 from BLACKBURN company, thickened with hydroxyethyl cellulose Agent CellosizeER-150000.25 kg, thickener aluminum magnesium silicate Attgel50 0.1 kg, hydrophobic modified polyurethane thickener RM2020 0.45 kg PH regulator 2-amino-2-methyl-1-propanol 0.2 kg, fungicide Progiven bayer Isothiazole derivatives + hydroxymethylurea 1,6 dihydroxy-2-5 dioxane 0.2 kg, antifungal agent Progiven 2-n-octyl-4-isothiazolin-3-one benzimidazole, 0.4 kilograms, 2 kilograms of antifreeze propylene glycol, 1.5 kilograms of coagulation aid 2...

Embodiment 3

[0037] The 10th to 22nd floors of a high-rise office building have adopted the product of the present invention for exterior wall coating. The formula is (100 kg in total) 25 kg of tap water, 0.5 kg of ammonium polyacrylate wetting and dispersing agent H100, rutile titanium dioxide (CR -828) 16 kg, anatase nano TiO 2 8 kg of powder, 5 kg of kaolin (3000 mesh), 3 kg of sericite (1250 mesh), 0.5 kg of silicone oil defoamer CF-246 of BLACKBURN company, 0.3 kg of hydroxyethyl cellulose thickener NATROSOL PLUS 330, Magnesium aluminum silicate thickener ATTAGEL50 0.1 kg, hydrophobic modified polyurethane thickener RM2020 0.4 kg, PH regulator 2-amino-2-methyl-1-propanol 0.2 kg, fungicide bayer isothiazole derivative + hydroxyl Methylurea 1,6 dihydroxy-2-5 dioxane 0.2 kg, antifungal agent Progiven 2-n-octyl-4-isothiazolin-3-one benzimidazole, 0.3 kg, antifreeze agent propylene glycol 2 kg, 1.5 kg of caking agent 2,2,4-trimethyl-1,3-pentanediol methyl ethyl butyrate, 37 kg of silicon ...

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PUM

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Abstract

The present invention relates to an ultraweatherability self-cleaning paint for outer wall, and its composition contains pigment filling material, moistening dispersing agent, defoaming agent, thickening agent A, B and C, polymer emulsion, anti-mildew bactericide, film-forming adjuvant and water, etc. Said emulsion paint has the water-proofing property, good dirt resistance and anti-ageing property. In particular, the anatase titanium dioxide powder body is added, it make said paint has self-cleaning function. The invention also provides preparation method.

Description

Technical field: [0001] The invention relates to a super-weather-resistant self-cleaning exterior wall coating and a preparation method thereof, in particular to a method for decomposing pollutants attached to the surface of the coating and anatase nano-TiO by photocatalytic reaction. 2 The micronization characteristics of the powder, the anatase nano-TiO 2 The powder is added into the coating to prepare a novel water-based silicone acrylic ultra-weather-resistant self-cleaning latex coating suitable for the exterior walls of large-scale and high-rise buildings. The invention belongs to the field of architectural coatings. Background technique: [0002] After years of hard work, the production technology of acrylic latex coatings has matured and has been widely used in low and medium buildings, and the trial period can basically meet the requirements of 5 to 10 years. With the development of the economy, the buildings in many large and medium-sized cities are developing tow...

Claims

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Application Information

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IPC IPC(8): C09D5/16C09D143/04
Inventor 石玉英丁春台周子鹄李赉周
Owner GUANGZHOU SUPER CHEM COATING CO LTDGUANGZHOU SUPER CHEM COATING CO LTD
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