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Polyurethane external-wall thermal-insulation paint and preparation method thereof

A heat-insulating coating, water-soluble polyurethane technology, applied in antifouling/underwater coatings, reflective/signal coatings, coatings, etc., to achieve the effects of high temperature resistance, good weather resistance, and good softness

Inactive Publication Date: 2015-07-01
GUANGXI CHAOXING SOLAR ENERGY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, there is no mature technology to prepare a light-weight, high fire-resistant, high-weather-resistant, environmentally friendly, non-aging, and long-lasting external thermal insulation coating to achieve the purpose of building energy saving. Water-based coatings are still being researched and tested

Method used

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  • Polyurethane external-wall thermal-insulation paint and preparation method thereof
  • Polyurethane external-wall thermal-insulation paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] First, 40 parts of polyurethane prepolymer, 1 part of N-methylolacrylamide, 2 parts of dibutyl phthalate, 0.5 parts of vinyl trichlorosilane, 10 parts of rutile titanium dioxide, and defoaming 0.1 part of methyl silicone oil; 5 parts of superfine calcium carbonate (300 mesh); 10 parts of mixed solvent (a mixture of lignin and ethylene glycol butyl ether with water, the weight ratio is 3:1:10); leveling agent polyacrylic acid The parts by weight of the ester is 1, and the yellow iron oxide is 2 parts, and the materials are prepared.

[0039] The production method is to add 2 kilograms of ethanol with a volume concentration of 50-70% per kilogram of N-methylolacrylamide to dissolve, and then mix it with polyurethane prepolymer in a reaction kettle. The reaction temperature is 80-150 ° C, and the reaction time is 1 After 1 hour, add vinyltrichlorosilane; continue to react for 2-5 hours; then add dibutyl phthalate, methyl silicone oil, superfine calcium carbonate, leveling ...

Embodiment 2

[0041] Firstly, 45 parts of polyurethane prepolymer, 2 parts of N-methylolacrylamide, 4 parts of dibutyl phthalate, 0.8 part of vinyl trichlorosilane, 15 parts of rutile titanium dioxide, 0.2 parts of antifoaming agent methyl silicone oil; 7 parts of superfine calcium carbonate (300 mesh); 12 parts of mixed solvent (a mixture of lignin and ethylene glycol butyl ether plus water, the weight ratio is 3:1:10); anti-settling agent Prepare 1 part of N-methylpyrrolidone solution of modified polyurea.

[0042] The production method is to add 2 kilograms of ethanol with a volume concentration of 50-70% per kilogram of N-methylolacrylamide to dissolve, and then mix it with polyurethane prepolymer in a reaction kettle. The reaction temperature is 80-150 ° C, and the reaction time is 1 After 1 hour, add vinyltrichlorosilane; continue to react for 2-5 hours; then add dibutyl phthalate, methyl silicone oil, superfine calcium carbonate, mixed solvent, anti-settling agent, and mix well to ob...

Embodiment 3

[0044] First, 50 parts of polyurethane prepolymer, 2 parts of N-methylolacrylamide, 5 parts of dibutyl phthalate, 1 part of vinyl trichlorosilane, 20 parts of rutile titanium dioxide, 0.3 parts of antifoaming agent methyl silicone oil; 10 parts of superfine calcium carbonate (300 mesh); 15 parts of mixed solvent (a mixture of lignin and ethylene glycol butyl ether plus water, the weight ratio is 3:1:10); antifreeze 1 part of 1,3-propanediol and 1 part of iron oxide red are prepared.

[0045] The production method is to add 2 kilograms of ethanol with a volume concentration of 50-70% per kilogram of N-methylolacrylamide to dissolve, and then mix it with polyurethane prepolymer in a reaction kettle. The reaction temperature is 80-150 ° C, and the reaction time is 1 After 1 hour, add vinyltrichlorosilane; continue to react for 2-5 hours; then add dibutyl phthalate, methyl silicone oil, superfine calcium carbonate, mixed solvent, propylene glycol, red iron oxide, and mix well to g...

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Abstract

The invention relates to a water-soluble polyurethane external-wall thermal-insulation paint and a preparation method thereof. The paint comprises a polyurethane prepolymer, N-hydroxymethyl acrylamide, dibutyl phthalate, vinyl trichlorosilane, titanium white, methyl silicone oil, superfine calcium carbonate and a mixed solvent. The preparation method comprises the following steps: adding 2 kilos of 50-70 vol% ethanol into every kilo of N-hydroxymethyl acrylamide for dissolution, mixing with the polyurethane prepolymer in a reaction kettle, reacting at 80-150 DEG C for 1 hour, and adding vinyl trichlorosilane; continuing reacting for 2-5 hours; and adding the dibutyl phthalate, rutile titanium white, methyl silicone oil, superfine calcium carbonate and mixed solvent, and uniformly mixing to obtain the water-soluble polyurethane external-wall thermal-insulation paint product. The water-soluble polyurethane external-wall thermal-insulation paint has the characteristics of high chemical resistance, high temperature resistance, favorable weather resistance, favorable pollution resistance, high glossiness, long service life of the coated film and the like.

Description

technical field [0001] The invention relates to a preparation method of a heat-insulating coating, in particular to a polyurethane exterior wall heat-insulating coating and a preparation method thereof, belonging to the technical field of chemical composition and its preparation. Background technique [0002] Building energy conservation is one of the key points of my country's energy conservation work, and external wall insulation has become the main product of building energy conservation. For areas where thermal insulation is the main focus of thermal design, such as severe cold areas and cold areas, external wall insulation is not only reasonable, but also applicable, and has developed rapidly. For hot summer and warm winter regions where thermal design generally only considers heat insulation, or hot summer and cold winter regions where heat insulation is the main focus of thermal design, there is room for further improvement of the current external wall insulation. Ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D4/00C09D4/06C09D5/33C09D5/16C09D7/12
Inventor 马昭键宋洪浪梁志坚吴定超
Owner GUANGXI CHAOXING SOLAR ENERGY TECH
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