Waterproof thermal insulation coating

A technology of thermal insulation coating and expanded perlite, which is used in antifouling/underwater coatings, anticorrosive coatings, fireproof coatings, etc. The effect needs to be improved to achieve the effect of low brush thickness requirement, good stain resistance and good core-shell coating

Inactive Publication Date: 2018-09-28
WUHU YUANKUI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in practical application of this kind of heat-insulating glass coating: on the one hand, because its heat-insulation principle is only based on the reflection of near-infrared rays, reaching a near-infrared shielding rate of 70%, the heat insulation effect needs to be improved; On the one hand, because it is applied outdoors, the currently disclosed transparent insulating glass coatings are still lacking in water resistance, UV aging resistance, abrasion resistance, etc.

Method used

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Experimental program
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Effect test

Embodiment 1

[0029] The preparation method of modified expanded perlite is:

[0030] Add expanded perlite to water containing 2wt% sodium lauryl sulfate, then add dropwise 150g / L indium trichloride solution and 100g / L tin tetrachloride solution, stir evenly, add 30% urea, and ultrasonically disperse Then gradually raise the temperature to 85°C for precipitation, wash with water after the precipitation, then raise the temperature to 500°C at 20°C / h, keep it for 50 minutes, then raise the temperature to 1000°C at 100°C / h, keep it for 3 hours, and you can get the modified Expanded perlite.

[0031] Acrylic emulsion, calculated in parts by weight, includes the following raw materials:

[0032] 170 parts of hydroxymethyl methacrylate, 90 parts of styrene, 15 parts of ammonium acrylate, 80 parts of alkaline silica sol, 46 parts of isooctyl acrylate, 105 parts of α-ethylhexyl acrylate, 20 parts of hydroxyethyl acrylate, 430 parts of water, 2 parts of potassium persulfate, 3.4 parts of pH regula...

Embodiment 2

[0040] The preparation method of modified expanded perlite is:

[0041] Add expanded perlite to water containing 1wt% sodium stearate, then add dropwise 100g / L indium trichloride solution and 150g / L tin tetrachloride solution, stir evenly, add 30% urea, and gradually Raise the temperature to 65°C for precipitation, wash with water after the precipitation, then raise the temperature to 700°C at 30°C / h, keep it for 30 minutes, then raise the temperature to 900°C at 80°C / h, keep it for 5 hours, and you can get the modified expanded pearl rock.

[0042] Acrylic emulsion, calculated in parts by weight, includes the following raw materials:

[0043] 180 parts of hydroxymethyl methacrylate, 100 parts of styrene, 13 parts of ammonium acrylate, 95 parts of non-ionic silica sol, 40 parts of isooctyl acrylate, 110 parts of α-ethylhexyl acrylate, 25 parts of hydroxyethyl acrylate , 460 parts of water, 2.5 parts of ammonium persulfate, 4 parts of pH regulator and 6 parts of sodium dodecy...

Embodiment 3

[0051] A waterproof and heat-insulating coating, calculated by weight percentage, comprising the following components:

[0052] 90 parts of alkyd resin, 50 parts of acrylic emulsion of Example 1, 26 parts of modified expanded perlite of Example 1, 10 parts of polyacrylic acid sodium salt, 6 parts of wetting agent, 12 parts of diethylenetriamine, thickener 6 parts and 20 parts of water. The thickener is a mixture of diatomaceous earth, sodium bentonite and microcrystalline cellulose.

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Abstract

The invention provides a waterproof thermal insulation coating. The coating is prepared from, by weight, 80-100 parts of alkyd resin, 40-60 parts of acrylic emulsion, 20-30 parts of modified expandedperlite, 6-12 parts of dispersing agent, 4-8 parts of wetting agent, 8-16 parts of curing agent, 4-8 parts of thickener and 10-30 parts of water; modified expanded perlite is mainly prepared from expanded perlite, indium trichloride and tin tetrachloride, and polyacrylic emulsion is mainly prepared from methyl hydroxymethyl methacrylate, styrene, ammonium acrylate, silica sol, ethyl hexyl acrylate, alha-ethylhexyl acrylate, hydroxyethyl acrylate, water, potassium persulfate, a pH adjuster and sodium dodecylbenzene sulfonate. The thermal insulation coating has better thermal insulation effect and excellent water resistance.

Description

technical field [0001] The invention belongs to the technical field of nano coatings, and in particular relates to a waterproof and heat-insulating coating. Background technique [0002] At present, the main materials used for glass energy saving are: Low-E glass, glass film and heat insulation coating. Low-E glass is mainly used in the field of new buildings and is irreplaceable. Energy-saving materials applied to existing building glass are mainly glass film and glass coating. Glass film also has high manufacturing costs, and generally after 2 to 3 years, due to the aging of the adhesive, the film layer will warp and bubble. [0003] At present, the research on transparent insulating glass coatings is mainly concentrated in Europe, America, Japan and other countries, and the research focus is mainly on the selection of inorganic functional materials, such as ITO (indium tin oxide), ATO (antimony tin oxide), TiO 2 (titanium dioxide), etc. The basic principle is to take ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C09D133/14C09D5/16C09D5/08C09D7/62
CPCC08K2201/014C08L2201/08C08L2201/10C08L2205/035C09D5/08C09D5/1687C09D5/18C09D167/08C08L33/14C08L33/02C08L1/04C08K13/06C08K9/04C08K9/10C08K3/22C08K7/26C08K3/346C08K3/36
Inventor 章波郭元
Owner WUHU YUANKUI NEW MATERIAL TECH CO LTD
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