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A kind of thermal insulation coating of exterior wall board and preparation method thereof

A technology for thermal insulation coatings and exterior wall panels, applied in coatings, antifouling/underwater coatings, paints containing biocides, etc. It can improve the mechanical strength and scrub resistance, reduce the antibacterial and antifungal properties, and reduce the water swelling.

Active Publication Date: 2021-03-30
浙江立盛新型墙体材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent application number CN03118029.9 discloses that nano-titanium dioxide, nano-zinc oxide, nano-silicon dioxide, sericite, and kaolin are used as the main functional components to prepare a multifunctional exterior wall coating, which improves the anti-aging ability and scrubbing resistance. , antibacterial and other properties, but the thermal insulation properties need to be improved, and at the same time, there are many steps in the production process and the process is more complicated
[0004] The inventors have found that the exterior wall thermal insulation coating material in the above-mentioned prior art has a loose and porous structure inside the nano-type filler, which has poor hydrophobicity and is easy to absorb a large amount of water. The increase in water content accelerates the cracking of the coating Pulverization and the growth of mold and algae reduce the thermal conductivity and affect the insulation effect of buildings

Method used

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  • A kind of thermal insulation coating of exterior wall board and preparation method thereof

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Effect test

Embodiment 1

[0035] A thermal insulation coating for exterior wall panels, comprising the following components by weight: 116g of vinyl chloride / vinyl acetate / acrylate copolymer emulsion, 32g of polymethyltrimethoxysilane as a silane coupling agent, 13g of rutile titanium dioxide, dodecyl carbon Alcohol ester 6g, modified bentonite 5g, nano antibacterial polymer microspheres 4g, curing agent 0.5g, anti-algae agent 1,2-benzisothiazolin-3-one 0.9g, tetrahydrofuran 62g. Among them, the solid content of the vinyl chloride / vinyl acetate / acrylate copolymer emulsion is 46±2%, the viscosity is less than 100 Pa·s, and the glass transition temperature is 5°C. The curing agent is prepared by mixing diglycidyl ether, 650 low-molecular polyamide, and ultrafine reactive dicyandiamide according to the mass ratio of 1:0.6:0.4.

[0036] The preparation method of nano antibacterial polymer microsphere comprises the following steps:

[0037] 1) Add 30g of oil-soluble titanium dioxide to 115g of ethyl methac...

Embodiment 2

[0050] A thermal insulation coating for exterior wall panels, comprising the following components by weight: 122g of vinyl chloride / vinyl acetate / acrylate copolymer emulsion, 28g of silane coupling agent polymethylphenylsiloxane, 15g of rutile titanium dioxide, 12g Carbon alcohol ester 7g, modified bentonite 4g, nano antibacterial polymer microspheres 3g, curing agent 0.6g, anti-algae agent 4,5-dichloro-N-octyl-4-isothiazolin-3-one 0.9g, Tetrahydrofuran 65g. The solid content of the vinyl chloride / vinyl acetate / acrylate copolymer emulsion is 46±2%, the viscosity is less than 100 Pa·s, and the glass transition temperature is 5°C; the preparation method of the modified bentonite is the same as in Example 1. The curing agent is prepared by mixing diglycidyl ether, 650 low-molecular polyamide, and ultrafine reactive dicyandiamide according to the mass ratio of 1:0.6:0.4.

[0051] The preparation method of described nano antibacterial polymer microspheres comprises the following s...

Embodiment 3

[0058] A thermal insulation coating for exterior wall panels, comprising the following components by weight: 109g of vinyl chloride / vinyl acetate / acrylate copolymer emulsion, 27g of silane coupling agent polymethyltriethoxysilane, 10g of rutile titanium dioxide, 12 g Carbon alcohol ester 8g, modified bentonite 5g, nano antibacterial polymer microsphere 4g, curing agent 0.6g, anti-algae agent zinc pyrithione 1.1g, tetrahydrofuran 66g. The solid content of vinyl chloride / vinyl acetate / acrylate copolymer emulsion is 46±2%, the viscosity is less than 100Pa·s, and the glass transition temperature is 5°C; the curing agent consists of diglycidyl ether, 650 low-molecular polyamide, ultrafine Active dicyandiamide is prepared by mixing according to the mass ratio of 1:0.6:0.4. The preparation method of modified bentonite is the same as in Example 1.

[0059] The preparation method of described nano antibacterial polymer microspheres comprises the following steps:

[0060] 1) Add 27g o...

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Abstract

The invention discloses an external wall panel insulating coating and a preparation method of the insulating coating. The insulating coating comprises the following ingredients in parts by mass: 100-130 parts of vinyl chloride / vinyl acetate / acrylate copolymerization emulsion, 20-40 parts of silane coupling agent, 6-18 parts of rutile titanium dioxide, 5-10 parts of texanol, 3-7 parts of modified bentonite, 2-5 parts of nano antibacterial high polymer microsphere, 0.1-0.8 parts of curing agent, 0.6-1.3 parts of anti-alga agent and 40-70 parts of tetrahydrofuran. The preparation method comprisesthe steps of emulsion particle preparation, antibacterial and anti-alga mixed solution preparation, mixed emulsion preparation and insulating coating preparation. The external wall panel insulating coating has better hydrophobicity and chemical resistance, and good mold and alga growth inhibition performance after absorbing moisture, and a low heat conductivity coefficient and a heat insulating effect of the coating are kept.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials for external walls, in particular to a thermal insulation coating for external wall panels and a preparation method thereof. Background technique [0002] As the pace of urban and rural construction continues to accelerate, the installed capacity of air-conditioning and heating equipment continues to increase, making the proportion of building energy consumption continue to increase. The significance of building energy conservation is becoming more and more important. The thermal insulation of building exterior walls is an important part of building energy conservation. . Coatings applied to exterior wall concrete or exterior wall panels are exposed to the atmospheric environment and undergo natural changes in climate such as wind, sun, and rain, which will cause the coating to chalk, discolor, peel off, stain, etc. Lose the original decorative effect, thereby affecting the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/06C09D5/14C09D7/62
CPCC08K2003/2241C09D5/14C09D127/06C09D7/62C08K13/06C08K9/02C08K3/346C08K9/10C08K3/22C08K5/101
Inventor 不公告发明人
Owner 浙江立盛新型墙体材料有限公司
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