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Method for preparing building heat preservation reflective composite thermal insulation coating

A thermal insulation coating and building thermal insulation technology, applied in the field of coatings, can solve the problems of decreased heat reflection performance, poor stain resistance of the coating film, dirty surface of the paint film, etc., to achieve increased performance, high crack resistance, and reduced damage Effect

Inactive Publication Date: 2016-04-20
JIANGSU SHIKONG COATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the coating film stain resistance of the building reflective heat insulation materials used in my country is poor, and the surface of the paint film becomes dirty and discolored after a period of use, resulting in a significant decline in heat reflection performance and causing certain light pollution. problem, the present invention firstly extracts the substances in wheat bran and cactus that can absorb and reflect light, modifies montmorillonite, then mixes it with water-based polyurethane and acrylic acid to form a composite emulsion, and finally adds thickeners, dispersants and other additives , then add ceramic microspheres and sepiolite powder to increase its thermal insulation performance, and make a composite thermal insulation coating with high stain resistance and no light pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] According to the mass ratio of 3:2:2, take wheat bran, freshly derooted cactus and distilled water, put them into a mill and grind them into a slurry, and then put the slurry into a container under constant stirring Add cellulase with 3% of wheat bran and pectinase with 1% of wheat bran, set the temperature of the mixture at 32°C, and stir for 50 minutes, then put the mixture into a centrifuge and centrifuge at a speed of 2000r / min 2min, take the separation liquid, and set aside; take the montmorillonite and put it in a muffle furnace at 800°C for calcination for 40min, then put it into a pulverizer to pulverize it, pass through a 200-mesh sieve, and then divide the obtained The particles and the above-mentioned separation liquid are put into a container, and the mass fraction of the separation liquid is equal to 10% hydrogen peroxide; the mixture in the above-mentioned container is heated until boiling, and after maintaining the temperature for 20 minutes, stop heating ...

example 2

[0020]According to the mass ratio of 3:2:2, take wheat bran, freshly derooted cactus and distilled water, put them into a mill and grind them into a slurry, and then put the slurry into a container under constant stirring Add cellulase with 5% wheat bran mass and pectinase with 1.5% wheat bran mass, set the temperature of the mixture at 36°C, and stir for 70 minutes, put the mixture in a centrifuge, and centrifuge at a speed of 2000r / min 3min, take the separation liquid, and set aside; take the montmorillonite and put it in a muffle furnace at 800°C for calcination for 55min, then put it into a pulverizer to pulverize it, pass through a 200-mesh sieve, and then divide the obtained The particles and the above-mentioned separation liquid are put into a container, and the mass fraction of the separation liquid is equal to 10% hydrogen peroxide; the mixture in the above-mentioned container is heated until it boils, and after the temperature is kept for 30 minutes, stop heating and ...

example 3

[0023] According to the mass ratio of 3:2:2, take wheat bran, freshly derooted cactus and distilled water, put them into a mill and grind them into a slurry, and then put the slurry into a container under constant stirring Add cellulase with 4% wheat bran mass and pectinase with 1.2% wheat bran mass, set the temperature of the mixture at 35°C, and stir for 60 minutes, put the mixture in a centrifuge, and centrifuge at a speed of 2000r / min 3min, take the separation liquid, and set aside; take the montmorillonite and put it in a muffle furnace at 800°C for calcination for 50min, then put it into a pulverizer to pulverize it, pass through a 200-mesh sieve, and then divide the obtained The particles and the above-mentioned separation liquid are put into a container, and the mass fraction of the separation liquid is equal to 10% hydrogen peroxide; the mixture in the above-mentioned container is heated until boiling, and after maintaining the temperature for 25 minutes, stop heating ...

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Abstract

The invention relates to a method for preparing a building heat preservation reflective composite thermal insulation coating and belongs to the technical field of coatings. The method disclosed by the invention aims to solve the problems that the current used building reflective thermal insulation material in China is low in coating stain resistance, the coating surface is stained after the material is used for a period of time and the heat reflectance performance of the material is greatly reduced due to color change so as to cause a certain light pollution. The preparation method comprises the following steps: extracting substances capable of absorbing reflected light in wheat bran and cactus, and modifying montmorillonite; forming composite emulsion with waterborne polyurethane and acrylic acid for mixing; and finally, adding a thickening agent, a dispersing agent and other aids, adding ceramic microspheres and sepiolite powder to improve the thermal insulation properties, thereby obtaining a composite thermal insulation coating which is high in stain resistance and does not cause any light pollution.

Description

technical field [0001] The invention relates to a preparation method of a building thermal insulation reflective composite thermal insulation coating, which belongs to the technical field of coatings. Background technique [0002] With the increasingly severe energy crisis, energy conservation, emission reduction and improvement of energy efficiency have become one of the important goals of the development of science and technology. As a technology widely used in various fields of society, coating technology is also facing new challenges and opportunities, especially the thermal insulation coating for building exterior walls, which is not only manufactured with green environmental protection technology itself, but also by changing the heat transfer of buildings. Direction, reflect or radiate external heat energy such as solar radiation energy back into the atmosphere, and reduce the conduction of heat energy inside the building to the outside world, thereby reducing the buil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D133/00C09D7/12C09D5/16
CPCC09D175/04C08L2205/035C09D5/16C09D7/62C09D7/63
Inventor 陈明生宋国
Owner JIANGSU SHIKONG COATING
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