Thermal-insulating external-wall coating of nano-composite water and its production

An exterior wall coating, nano-composite technology, applied in fire-resistant coatings, coatings, latex paints, etc., can solve the problem of weak heat reflection ability, scrub resistance, stain resistance, aging resistance and weather resistance, environmental protection performance. Not good and other problems, to achieve the effect of improving anti-fouling performance, not easy to peel off, and not easy to deteriorate

Inactive Publication Date: 2007-09-05
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of coating is still that the environmental protection performance is not good, and at the same time, the heat reflection ability of the near-infrared band where the solar heat energy is concentrated is relatively weak.
At present, there have been reports on water-based heat reflective coatings at home and abroad, but the scrub resistance, stain resistance, aging resistance and weather resistance of this coating are not ideal.

Method used

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  • Thermal-insulating external-wall coating of nano-composite water and its production
  • Thermal-insulating external-wall coating of nano-composite water and its production
  • Thermal-insulating external-wall coating of nano-composite water and its production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Under the condition of stirring at 100r / min, 17.5 parts of tap water, nano-SiO 2 0.3 parts, 0.1 parts of Hydropalat 3275 wetting and dispersing agent, 0.3 parts of sodium alkylnaphthalene sulfonate, 0.1 parts of mineral oil, 0.1 parts of isothiazolinone, and 2 parts of propylene glycol. After 15 minutes of pre-dispersion, add 15 parts of rutile titanium dioxide and 15 parts of sericite, then increase the speed to 4000r / min, and disperse at high speed for 60 minutes. Then reduce the rotation speed to 400r / min, add 35 parts of tetramethyldivinyldisiloxane modified acrylic acid emulsion, 0.2 parts of mineral oil, 2.5 parts of 2,2,4-trimethyl-1,3-pentanedi Alcohol monoisobutyl ester, 1 part of nano antimony tin oxide slurry, 10 parts of polystyrene hollow microspheres, add 0.1 part of 2-amino-2-methyl-1-propanol to adjust the pH value of the system between 8.5 and 9.0 , use 0.8 parts of Optiflo H400 and Optiflo H600 mixture to adjust the viscosity to 85 ~ 90KU, that is to ...

Embodiment 2

[0035] Under the condition of stirring at 400r / min, add 20 parts of tap water, nano-SiO 2 0.4 parts, 0.1 parts of DP512 wetting and dispersing agent, 0.1 parts of SN-5027 wetting and dispersing agent, 0.2 parts of the mixture of sodium dodecylsulfonate and alkylphenol polyoxyethylene ether, 0.1 parts of mineral oil, 0.3 parts Isothiazolinone, 2 parts propylene glycol. After 15 minutes of pre-dispersion, add 21.5 parts of rutile titanium dioxide and 12.5 parts of sericite, then increase the rotation speed to 5000r / min, and disperse at high speed for 10 minutes. Reduce the rotational speed to 600r / min, add 30 parts of trimethyltrivinylcyclotrisiloxane modified butyl acrylate emulsion, 0.1 part of mineral oil, 3 parts of 2,2,4-trimethyl-1,3- Pentylene glycol monoisobutyl ester, 3 parts of nano-tin antimony oxide slurry, 5 parts of polystyrene hollow microspheres, adding 0.2 parts of 2-amino-2-methyl-1-propanol to adjust the pH value of the system at 8.5-9.0 In between, use 1.5 ...

Embodiment 3

[0037] Under the condition of stirring at a speed of 300r / min, 15 parts of tap water, nano-SiO 2 0.2 parts, 0.3 parts of BYK154 wetting and dispersing agent, 0.2 parts of dibutyl sulfosuccinate, 0.05 parts of mineral oil, 0.1 parts of isothiazolinone, 2 parts of propylene glycol. After 15 minutes of pre-dispersion, add 24.5 parts of rutile titanium dioxide and 10 parts of sericite, then increase the rotation speed to 4000r / min, and disperse at high speed for 30 minutes. Reduce the rotation speed to 500r / min, add 32 parts of tetramethyldivinyldisiloxane modified acrylic acid emulsion, 0.05 parts of mineral oil, 3.5 parts of 2,2,4-trimethyl-1,3-pentanediol in sequence Monoisobutyl ester, 3 parts of nano-tin antimony oxide slurry, 8 parts of polystyrene hollow microspheres, add 0.1 part of ammonia water to adjust the pH value of the system between 8.5 and 9.0, and use 1 part of Ciba's 132 type thickener Adjust the viscosity to 85-90KU to prepare the nano-composite water-based he...

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Abstract

A water nan-composite thermal-insulating coating for external wall and its production are disclosed. The coating consists of water, polymer emulsion, high-refractive index pigment, filler, nano-tin-antimony oxide slurry, nano-SiO2, wet dispersant, filming accessory, pH adjuster, thickener, de-foaming agent, anti-freezing agent and mildew-proof bactericide. It's cheap and simple, has excellent wash and weather resistances, better thermal-insulating performance, safe storage and no environmental pollution. It can be used for apparatus surface and architecture external wall.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a nanocomposite water-based heat-insulating exterior wall coating and a preparation method thereof. Background technique [0002] With the development of my country's construction industry, the importance of energy saving in houses has become increasingly prominent. Ordinary exterior wall coatings will absorb the infrared rays in sunlight and convert them into heat energy, causing the temperature of the coating to rise. raised. Theoretically speaking, as long as the heat radiation can be effectively reflected or blocked, the effect of heat insulation can be effectively achieved, such as the use of silicate materials. Classic wall thermal insulation materials include phenolic resin synthetic materials, polyurethane materials, glass fiber materials, aluminum silicate rock wool, mineral wool, rubber and plastic, cork, perlite, etc. These materials have the disadvantages of heavy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/07C09D5/02C09D5/18
Inventor 陈中华姜疆张贵军
Owner SOUTH CHINA UNIV OF TECH
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