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A kind of polyurethane modified thermal insulation coating and preparation method thereof

A technology of polyurethane modified and heat-insulating coatings, applied in the field of coatings, can solve the problems of short service life, single function, poor heat insulation effect, etc., and achieve the effects of improving stability, high reflectivity and prolonging service life

Active Publication Date: 2021-07-30
广元瑞峰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing coating system is still made of acrylic emulsion or modified resin, which has problems such as single function, poor heat insulation effect, and short service life.

Method used

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  • A kind of polyurethane modified thermal insulation coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This embodiment provides a polyurethane-modified water-based acrylic heat-insulating coating, which includes the following compositions in parts by weight: 23 parts of modified water-based polyurethane emulsion, 45 parts of acrylic emulsion, 46 parts of mixed filler, 13 parts of rutile titanium dioxide, poly 1 part of ammonium acrylate (ECODIS P90), 0.1 part of light stabilizer, 0.05 part of polydimethylsiloxane, 38 parts of deionized water; the acrylic acid emulsion is formed by mixing the following monomers in parts by weight Acrylic acid 24 Parts, 36 parts of methacrylic acid, 6 parts of methyl methacrylate, 3 parts of butyl methacrylate;

[0022] The preparation method of the water-based acrylic heat insulating coating of described polyurethane modification, comprises the steps:

[0023] (1) Preparation of water-based polyurethane emulsion: put 500 g of dehydrated isophorone diisocyanate, 200 g of polytetrahydrofuran diol, and 100 g of double-tailed dihydroxy silico...

Embodiment 2

[0027] This embodiment provides a polyurethane-modified water-based acrylic heat-insulating coating, which includes the following components by weight: 25 parts of modified water-based polyurethane emulsion, 48 parts of acrylic emulsion, 46 parts of mixed filler, 18 parts of rutile titanium dioxide, poly 2 parts of acrylate ammonium salt (ECODIS P90), 0.2 part of light stabilizer, 0.08 part of fluorosiloxane, 40 parts of deionized water; the acrylic acid emulsion is formed by mixing the following monomers in parts by weight: 40 parts of acrylic acid, formaldehyde 50 parts of methacrylic acid, 8 parts of methyl methacrylate;

[0028] The preparation method is the same as in Example 1.

Embodiment 3

[0030] This embodiment provides a polyurethane-modified water-based acrylic heat-insulating coating, which includes the following components by weight: 24 parts of modified water-based polyurethane emulsion, 40 parts of acrylic emulsion, 42 parts of mixed filler, 12 parts of rutile titanium dioxide, poly 3 parts of acrylate ammonium salt (ECODIS P90), 0.3 part of light stabilizer, 0.08 part of fluorosiloxane, 33 parts of deionized water; the acrylic acid emulsion is formed by mixing the following monomers in parts by weight: 52 parts of acrylic acid, formazan 13 parts of methyl acrylate, 12 parts of butyl methacrylate;

[0031] The preparation method is the same as in Example 1.

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Abstract

The invention belongs to the technical field of coatings, and in particular relates to a heat-insulating coating for exterior walls. The coating comprises the following composition in parts by weight: 20-25 parts of modified water-based polyurethane emulsion, 40-50 parts of acrylic emulsion, 40-50 parts of filler, 10-18 parts of pigment, 1-3 parts of dispersant, light stabilizer 0.1-0.3 part, 0.05-0.1 part of defoamer, 30-40 part of deionized water; the modified water-based polyurethane emulsion is a comb-shaped organosilicon modified water-based polyurethane, which is based on isophorone diisocyanate, polytetrahydrofuran diisocyanate Alcohol, double-tailed dihydroxy silicone oil, dimethylolpropionic acid, 1,4-butanediol, triethylamine, and hydrazine hydrate are the main raw materials, and are prepared by prepolymer dispersion method. The organosilicon-modified polyurethane of the present invention fully combines the heat resistance and water resistance of organosilicon and the wear resistance of polyurethane, and can significantly improve the mechanical properties and waterproof effect of heat-insulating coatings after being used to make coatings, greatly improving its use. life.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a polyurethane modified heat-insulating coating and a preparation method thereof. Background technique [0002] With the development of social economy and the continuous improvement of people's material level, building energy consumption is also increasing. According to incomplete statistics, nearly half of the energy consumption of the whole society comes from the construction industry. In addition, the energy consumption of cooling equipment used in the world every year also reaches more than 20% of the total energy consumption. Therefore, "constructing a conservation-oriented society" has become an important topic of great concern in today's society, and building energy conservation has become a hot spot in society, and thermal insulation has become an important direction of building energy conservation. [0003] In the field of architectural coatings, the develo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/02C09D175/08C09D5/33C09D7/61C09D7/65C08G18/75C08G18/66C08G18/48C08G18/61C08G18/12C08G18/34
CPCC08G18/12C08G18/4854C08G18/61C08G18/755C08K2003/2241C08L2201/08C08L2205/025C08L2205/035C08L2205/20C09D5/004C09D133/02C09D7/61C09D7/65C09D7/69C09D7/70C08L75/08C08L33/02C08L101/00C08K13/04C08K7/28C08K3/22C08G18/348
Inventor 谭建军李雪莲
Owner 广元瑞峰新材料有限公司