Mildewproof and waterproof coating for building external wall and production method thereof

A technology for building exterior walls and waterproof coatings, used in antifouling/underwater coatings, coatings, and biocide-containing paints, etc. Material performance decline and other problems, to achieve the effect of strong fungicidal ability, good chemical cross-linking effect, and improved waterproof and mildew resistance.

Inactive Publication Date: 2018-05-04
GUANGXI WUXUAN JINPAI WATERPROOF MATERIAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned patent documents, the fillers (such as bamboo charcoal powder) are not modified, and there will be obvious disadvantages when filled in the coating: the first is that the surface is hydrophilic and oleophobic, and the dispersibility in the coating is poor; the second is carbonic acid The binding force between calcium and the paint body is poor, and it can only act as a compatibilizer. When filling with a high proportion of calcium carbonate, the performance of the paint material will drop sharply, so that the product is difficult to be processed and used.

Method used

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  • Mildewproof and waterproof coating for building external wall and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] First, 40 parts of emulsion (a mixture of A-102 silicone acrylic emulsion and A-99 pure acrylic emulsion, the ratio of the two parts by weight is 1.5:1), 1 part of N-methylol acrylamide, 6 parts of fumed silica, 4 parts of water, 1 part of titanate coupling agent (monoalkoxypyrophosphate titanate coupling agent), 6 parts of additives (1 part of cellulose acetate butyrate, 1 part hydroxyethyl cellulose, 4 parts 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate), 7 parts n-butyl acetate, 5 parts fungicide octyl-isothiazole Kelinone, 5 parts of modified nano-calcium carbonates, prepare materials.

[0041] The preparation method of the modified nano-calcium carbonate is as follows: dehydrate and dry the nano-calcium carbonate powder at 115-120°C, then add it to a high-speed mixer, stir and heat up, stop heating at 90°C, and add 2.0% of the mass of nano-calcium carbonate The chelating titanate coupling agent KR-201 was modified at 90°C for 10 minutes; then 2.0% of stearic aci...

Embodiment 2

[0047] First, 45 parts of emulsion (a mixture of A-102 silicone acrylic emulsion and A-99 pure acrylic emulsion, the ratio of the two parts by weight is 1.5:1), 1.5 parts of N-methylol acrylamide, 7 parts of fumed silica, 5 parts of water, 1.5 parts of titanate coupling agent (monoalkoxy pyrophosphate type titanate coupling agent), 9 parts of auxiliary agent (2 parts of cellulose acetate butyrate, 2 parts hydroxyethylcellulose, 5 parts 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate), 8 parts n-butyl acetate, 7 parts fungicide 5-chloro-2 -Methyl-4-isothiazolin-3-ketone, 8 parts of modified nanometer calcium carbonate, prepare materials.

[0048] The preparation method of the modified nano-calcium carbonate is as follows: dehydrate and dry the nano-calcium carbonate powder at 115-120°C, then add it to a high-speed mixer, stir and heat up, stop heating at 90°C, and add 2.0% of the mass of nano-calcium carbonate The chelating titanate coupling agent KR-201 was modified at 90°C f...

Embodiment 3

[0054] First, 50 parts of emulsion (a mixture of A-102 silicone acrylic emulsion and A-99 pure acrylic emulsion, the ratio of the two parts by weight is 1.5:1), 2 parts of N-methylol acrylamide, 9 parts of fumed silica, 6 parts of water, 2 parts of titanate coupling agent (monoalkoxy pyrophosphate type titanate coupling agent), 12 parts of auxiliary agent (3 parts of cellulose acetate butyrate, 3 parts hydroxyethyl cellulose, 6 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate), 9 parts of n-butyl acetate, 8 parts of fungicide octyl-isothiazole Kelinone, 10 parts of modified nano-calcium carbonates, prepare materials.

[0055]The preparation method of the modified nano-calcium carbonate is as follows: dehydrate and dry the nano-calcium carbonate powder at 115-120°C, then add it to a high-speed mixer, stir and heat up, stop heating at 90°C, and add 2.0% of the mass of nano-calcium carbonate The chelating titanate coupling agent KR-201 was modified at 90°C for 10 minutes...

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Abstract

The invention discloses a mildewproof and waterproof coating for a building external wall, which is prepared from 40 to 50 parts of emulsion, 1 to 2 parts of N-hydroxymethyl acrylamide, 6 to 9 parts of fumed silica, 4 to 6 parts of water, 1 to 2 parts of titanate coupling agent, 6 to 12 parts of auxiliary, 7 to 9 parts of n-butyl acetate, 5 to 8 parts of mildew preventive and 5 to 10 parts of modified nano calcium carbonate, wherein the emulsion is mixed liquor of A-102 silicone acrylic emulsion and A-99 pure acrylic emulsion at the weight ratio of 1.5 to 1, the auxiliary is prepared form 1 to3 weight parts of flatting agent, 1 to 3 weight parts of thickening agent and 4 to 6 weight parts of coalescing agent, and the mildew preventive is octyl-isothiazolinone or 5-chloro-2-methyl-4-isothiazolin-3-ketone. The coating provided by the invention has the advantages of high chemical resistance, good weather resistance, good mold prevention effect, high glossiness, long film service life andthe like.

Description

technical field [0001] The invention relates to the field of chemical coatings, in particular to a mold-proof and waterproof coating for building exterior walls and a production method thereof. Background technique [0002] Architectural waterproof coating is a viscous liquid polymer synthetic material with no fixed shape at room temperature. After coating, it can form a tough waterproof coating film on the surface of the base layer after the volatilization of solvent or water evaporation or reaction curing. . Because the anti-mildew and waterproof coatings on the exterior walls of buildings are used outdoors, they are exposed to wind and sun for many years. Therefore, compared with indoor waterproof coatings, they need stronger waterproof and anti-seepage capabilities, good color retention performance, and can resist ultraviolet rays. . The current waterproof materials for building exterior walls have a short service life. After several years of wind and sun, peeling and ...

Claims

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Application Information

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IPC IPC(8): C09D4/02C09D4/06C09D5/14C09D7/62C09D7/63C09D7/20
CPCC09D4/06C09D5/14
Inventor 刘拥军刘永刚郑新国郑爱彬候尚春
Owner GUANGXI WUXUAN JINPAI WATERPROOF MATERIAL SCI & TECH CO LTD
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