Acid-rain-resistant water-based exterior wall paintand preparation method thereof

An exterior wall paint and acid rain-resistant technology, which is applied in the field of building exterior wall decoration materials, can solve the problems of reduced adhesion between the coating and the substrate, affecting the durability of the coating, bubbling or peeling, etc., to enhance water resistance and improve adhesion. Improves knot strength, stain resistance and acid resistance

Inactive Publication Date: 2021-11-19
安徽朗凯奇科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Acid rain contains many inorganic acids and organic acids, most of which are sulfuric acid and nitric acid. If the ability of the coating to control moisture is poor, the moisture in the atmosphere will easily penetrate the coating into the wall, and then generate hydration products. This hydration product easily absorbs carbon dioxide in the air, undergoes carbonation reaction to form calcium carbonate knots, and then expands to reduce the adhesion between the coating and the substrate, resulting in powdering, bubbling or peeling of the coating, thus affect the durability of the coating

Method used

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  • Acid-rain-resistant water-based exterior wall paintand preparation method thereof
  • Acid-rain-resistant water-based exterior wall paintand preparation method thereof
  • Acid-rain-resistant water-based exterior wall paintand preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0023] In the present embodiment, by weight, the specific formula is:

[0024] Waterborne polyurethane resin 5 copies Polyacrylate 10 copies Nano Titanium Dioxide 1 copy Inert pigments and fillers 30 copies Hydrophobic modifier 1 copy Dispersant 1 copy coupling agent 0.5 parts Defoamer 0.5 parts Other additives 2 copies water Appropriate amount

[0025] Among them, the inert pigment and filler is high titanium powder; the hydrophobic modifier is polyethylene oxide; the dispersant is unsaturated carboxylic acid polymer; the coupling agent is silane KH-550; the defoaming agent is acrylic acid polymer.

[0026] Other additives include 0.5 part of leveling agent, 1 part of plasticizer and 0.5 part of film-forming aid, wherein, the leveling agent is fumed silica, the plasticizer is epoxy fatty acid methyl ester, and the film-forming aid is ten dicarboxylates.

[0027] figure 1 Be the flow chart of the ...

specific Embodiment 2

[0032] In the present embodiment, by weight, the specific formula is:

[0033]

[0034]

[0035] Among them, the inert pigment and filler is barite powder; the hydrophobic modifier is polyethylene oxide; the dispersant is methyl cellulose; the coupling agent is silane KH-551; the defoaming agent is fatty acid ester.

[0036] Other additives include 1.5 parts of leveling agent, 2.5 parts of plasticizer and 3 parts of film-forming aid, wherein, the leveling agent is fumed silica, the plasticizer is bismaleimide, and the film-forming aid is Aliphatic carboxylic acid diester.

[0037] figure 1 Be the flow chart of the preparation method of a kind of acid rainwater resistant exterior wall paint of the present invention, can find out from it, the concrete preparation method of this implementation is:

[0038] Step S1: preparing hydrophobically modified waterborne polyurethane resin: using waterborne polyurethane resin and hydrophobic modifier as raw materials, self-made hydr...

specific Embodiment 3

[0042] In the present embodiment, by weight, the specific formula is:

[0043] Waterborne polyurethane resin 10 copies Polyacrylate 15 copies Nano Titanium Dioxide 2 copies Inert pigments and fillers 40 copies Hydrophobic modifier 2 copies Dispersant 4 parts coupling agent 1 copy Defoamer 0.8 parts Other additives 3.5 servings water Appropriate amount

[0044] Among them, the inert pigment and filler is wollastonite powder; the hydrophobic modifier is polyethylene oxide; the dispersant is unsaturated carboxylic acid polymer; the coupling agent is silane KH-551; the defoaming agent is polydimethylsiloxane alkyl.

[0045] Other additives include 1 part of leveling agent, 1.5 parts of plasticizer and 1 part of film-forming aid, wherein, the leveling agent is fumed silica, the plasticizer is epoxy fatty acid methyl ester, and the film-forming aid is ten dicarboxylates.

[0046] figure 1 Be the flow c...

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Abstract

The invention relates to the technical field of building outer wall decoration materials, in particular to a preparation method of acid-rain-resistant water-based exterior wall paint. The method comprises the following steps: preparing a hydrophobic modified water-based polyurethane resin for later use by taking a water-based polyurethane resin and a hydrophobic modifier as raw materials; weighing the prepared hydrophobic modified waterborne polyurethane resin, polyacrylate and a dispersing agent according to the formula, uniformly stirring in a stirring container, adding a certain mass of nano titanium dioxide and inert pigment filler, adding a proper amount of coupling agent and defoaming agent, and stirring to obtain uniform dispersion liquid; and adjusting the rotating speed, adding other auxiliary agents and a proper amount of water, and stirring for a certain time to finally prepare the acid-rain-resistant water-based exterior wall paint with proper viscosity. According to the invention, the bonding strength, water resistance, corrosion resistance and weather resistance of the exterior wall paint are enhanced, aging can be effectively prevented, and application and development of the acid-rainwater-resistant water-based exterior wall paint are promoted.

Description

technical field [0001] The invention relates to the technical field of building exterior wall decoration materials, in particular to an acid rain-resistant exterior wall paint and a preparation method thereof. Background technique [0002] With the rapid development of my country's national economy, the rise of high-rise and super high-rise buildings has also put forward higher decorative requirements for buildings. Architectural coatings with rich colors, simple finishes, easy renewal, and low energy consumption are more and more popular among people. Pay attention to. [0003] Acid rain contains many inorganic acids and organic acids, most of which are sulfuric acid and nitric acid. If the ability of the coating to control moisture is poor, the moisture in the atmosphere will easily penetrate the coating into the wall, and then generate hydration products. This hydration product easily absorbs carbon dioxide in the air, undergoes carbonation reaction to form calcium carbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D187/00C09D7/61C09D5/08C08G81/00
CPCC09D133/04C09D7/61C09D5/08C09D7/70C08G81/00C08K2201/011C08K2003/2241C08K2003/3045C08G2150/90C08L87/005C08K3/22C08K3/30C08K3/34C08K7/12
Inventor 乔启信朱华林
Owner 安徽朗凯奇科技股份有限公司
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