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Water-based weather-proof stain-proof thermal reflective insulation coating and preparation method thereof

A technology of heat-insulating coatings and heat-reflecting pigments, which is applied in the direction of reflection/signal coatings, anti-fouling/underwater coatings, coatings, etc., and can solve the problem of limited improvement of coating stain resistance, unreasonable preparation process, and loss of heat insulation performance To achieve the effect of maintaining reflective heat insulation, maintaining structural integrity, and low VOC content

Inactive Publication Date: 2014-12-31
SINOSTEEL MAANSHAN INST OF MINING RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of coating either simply adds silicone acrylic emulsion or fluorocarbon emulsion, and the stain resistance of the coating is limited; or additionally adds fluorine-containing additives or fluororesin emulsion or silicone resin emulsion, the coating has better stain resistance, but the coating cost higher
In addition, when some of the above-mentioned coatings use hollow glass microspheres or hollow ceramic microspheres, these hollow microspheres are dispersed or ground together with conventional pigments and fillers to a specified fineness, and then film-forming agents are added and the paint is mixed. The preparation process Unreasonable, because the hollow structure of hollow glass microspheres or hollow ceramic microspheres will be destroyed after high-speed stirring or grinding, thus losing their good thermal insulation properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Add 12% deionized water into the dispersing kettle, add 0.4% wetting agent, 1.0% dispersing agent, 0.2% antiseptic and bactericide, 0.1% alkali swelling thickener, 0.2% defoaming agent, dissolve and disperse evenly, add 15% rutile titanium dioxide, 5% heavy calcium and 5% ethyl sodium silicate, and stir and disperse at a high speed of 3000r / min for 40min to obtain a uniformly dispersed slurry;

[0044] (2) Add 1.5% film-forming aid, 2% antifreeze and 0.2% defoamer to the slurry obtained in step (1) at a stirring speed of 1000r / min, stir well and add 45% elastic acrylic emulsion , and continue to disperse at the same stirring speed for 10 minutes;

[0045] (3) Add 12% hollow glass microspheres to the mixture obtained in step (2), and stir and disperse at a speed of 600r / min for 15 minutes, then add 0.2% defoamer and 0.2% associative thickener , after mixing evenly, stir at 400r / min for 15min, filter, and package to obtain a water-based weather-resistant, stain-resis...

Embodiment 2

[0047] (1) Add 10% deionized water into the dispersing kettle, add 0.5% wetting agent, 0.8% dispersing agent, 0.2% antiseptic and bactericide, 0.1% alkali swelling thickener, 0.2% defoamer, dissolve and disperse evenly, add 20% rutile titanium dioxide, 10% kaolin and 6% sodium methyl silicate, and stir and disperse at a high speed of 2500r / min for 60min to obtain a uniformly dispersed slurry;

[0048] (2) Add 1.5% film-forming aid, 2% antifreeze and 0.2% defoamer to the slurry obtained in step (1) at a stirring speed of 1000r / min, stir well and then add 40% silicone acrylic emulsion , and continue to disperse at the same stirring speed for 15 minutes;

[0049] (3) Add 8% hollow glass microspheres to the mixture obtained in step (2), and stir and disperse at a speed of 900r / min for 10 minutes, then add 0.2% defoamer and 0.3% associative thickener , after mixing evenly, stir at 500r / min for 15min, filter, and package to obtain a water-based weather-resistant, stain-resistant, h...

Embodiment 3

[0051] (1) Add 18.5% deionized water into the dispersing kettle, add 0.6% wetting agent, 0.8% dispersing agent, 0.2% antiseptic and bactericide, 0.1% alkali swelling thickener, 0.2% defoamer, dissolve and disperse evenly, add 16% rutile titanium dioxide, 8% heavy calcium and 4% ethyl sodium silicate, and stir and disperse at a high speed of 3500r / min for 40min to obtain a uniformly dispersed slurry;

[0052] (2) Add 2% film-forming aid, 2% antifreeze and 0.2% defoamer to the slurry obtained in step (1) at a stirring speed of 800r / min, stir well and add 37% fluorocarbon emulsion , and continue to disperse at the same stirring speed for 15 minutes;

[0053] (3) Add 10% hollow ceramic microspheres to the mixture obtained in step (2), and stir and disperse at a speed of 1000r / min for 10 minutes, then add 0.2% defoamer and 0.2% associative thickener , after mixing evenly, stir at 400r / min for 10min, filter, and package to obtain a water-based weather-resistant, stain-resistant, he...

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PUM

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Abstract

The invention discloses a water-based weather-proof stain-proof thermal reflective insulation coating which comprises the following components in percentage by mass: 30%-50% of film forming emulsion, 10%-20% of heat reflection pigment, 6%-15% of hollow microspheres, 5%-10% of fillers, 3%-8% of a water repellent agent, 4%-8% of an assistant and the balance of de-ionized water. By introducing the industrial water repellent agent, the coating is excellent in weather resistance, stain resistance and adhesion on basic materials, and then the reflective insulation property is kept for a long time. The invention further provides a preparation method of the coating; the preparation method comprises the following steps: stirring, uniformly mixing, filtering, and packaging. According to the preparation method, the damage on the hollow microsphere structures can be reduced to the maximum extent, and the coating is guaranteed to be good in heat insulation property; in addition, the coating is low in VOC (volatile organic compound) content and environment-friendly, and the preparation process is simple and easy for large-scale industrialized production.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a thermal insulation coating, in particular to a thermal insulation coating used for external equipment (facilities) such as building exterior walls, building roofs, and oil and gas storage tanks, and a preparation method thereof. Background technique [0002] With the development of paint technology, a new type of paint that partially or completely replaces air conditioners, air conditioners, electric fans, cold water sprays, etc. to cool buildings and outdoor equipment - heat insulation paint is gradually favored by people. Thermal insulation coatings are designed according to the principle of heat transfer through conduction, convection and radiation: it either reflects and radiates the solar heat on the surface of the coating through high reflectivity, reducing its own absorption of solar heat; or through its own low The thermal conductivity reduces the heat abso...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D133/04C09D127/12C09D5/33C09D5/16C09D7/12
Inventor 虞夏吴喜元汪俊
Owner SINOSTEEL MAANSHAN INST OF MINING RES
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