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Waterborne polyurethane thermal-insulating sound-absorbing coating and preparation method thereof

A technology of water-based polyurethane and sound-absorbing coatings, which is applied in the preparation of coatings and in the field of water-based polyurethane heat-insulating and sound-absorbing coatings. It can solve the problems of insufficient water-based polyurethane coatings, and achieve the effects of protecting health, strong tensile strength, and good weather resistance

Inactive Publication Date: 2015-07-22
GUANGXI CHAOXING SOLAR ENERGY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of water-based polyurethane coatings is still insufficient, mainly in the aspects of heat insulation and sound absorption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] First, 40 parts of polyurethane prepolymer, 1 part of N-methylolacrylamide, 2 parts of dibutyl phthalate, 0.5 part of zirconium-aluminate coupling agent, 200 mesh rutile titanium 10 parts of white powder, 0.1 part of antifoaming agent methyl silicone oil, 10 parts of mixed solvent (a mixture of lignin and ethylene glycol butyl ether plus water, the weight ratio is 3:1:10) and 5 parts of 100-mesh wood fiber; leveling agent 1 part of polyacrylate solution for material preparation.

[0036] 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 Add zirconium-aluminate coupling agent after 1 hour; continue to react for 2-5 hours; then add dibutyl phthalate, rutile titanium dioxide, methyl silicone oil, mixed solvent, wood fiber and polyacrylate solution, ...

Embodiment 2

[0039] First, 45 parts of polyurethane prepolymer, 1.5 parts of N-methylolacrylamide, 3 parts of dibutyl phthalate, 0.7 parts of zirconium-aluminate coupling agent, 250 mesh rutile titanium 15 parts of white powder, 0.2 parts of antifoaming agent methyl silicone oil, 13 parts of mixed solvent (a mixture of lignin and ethylene glycol butyl ether plus water, the weight ratio is 3:1:10) and 6 parts of 150 mesh sericite powder; antifreeze Agent 1,3-propanediol 3 parts, carry out material preparation.

[0040] 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 Add zirconium-aluminate coupling agent after 1 hour; continue to react for 2-5 hours; then add dibutyl phthalate, rutile titanium dioxide, methyl silicone oil, mixed solvent, sericite powder and antifree...

Embodiment 3

[0043] First, 50 parts of polyurethane prepolymer, 2 parts of N-methylolacrylamide, 5 parts of dibutyl phthalate, 1 part of zirconium-aluminate coupling agent, 300 mesh rutile titanium 20 parts of white powder, 0.3 parts of antifoaming agent methyl silicone oil, 15 parts of mixed solvent (a mixture of lignin and ethylene glycol butyl ether plus water, the weight ratio is 3:1:10) and 7 parts of 180 mesh amorphous silica; Prepare 5 parts of N-methylpyrrolidone solution of polyurea modified by anti-settling agent.

[0044] 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 Add zirconium-aluminate coupling agent after 1 hour; continue to react for 2-5 hours; then add dibutyl phthalate, rutile titanium dioxide, methyl silicone oil, mixed solvent, amorphous sil...

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Abstract

The invention discloses waterborne polyurethane thermal-insulating sound-absorbing coating and a preparation method thereof. The waterborne polyurethane thermal-insulating sound-absorbing coating comprises a polyurethane prepolymer, N-hydroxymethyl acrylamide, phthalic acid dibutyl ester, a zirconium-aluminic acid ester coupling agent, rutile titanium dioxide, methylsilicone oil, a mixed solvent and a sound-absorbing material. The preparation method comprises the following steps: dissolving every 1 kg by weight of N-hydroxymethyl acrylamide in 2 kg of 50-70% ethanol in volume concentration, mixing with the polyurethane prepolymer in a reaction kettle, enabling the components to react for 1 hour at 80-150 DEG C, and adding the zirconium-aluminic acid ester coupling agent to continuously react for 2-5 hours; subsequently adding the phthalic acid dibutyl ester, rutile titanium dioxide, methylsilicone oil, mixed solvent and sound-absorbing material, and uniformly mixing, thereby obtaining a waterborne polyurethane thermal-insulating sound-absorbing coating product. The waterborne polyurethane thermal-insulating sound-absorbing coating can insulate heat and absorb sound, and is good in chemical resistance, good in temperature resistance, good in weather resistance, long in film service life, free of toxicity or smell, safe and environment-friendly and good in sound absorption effect.

Description

technical field [0001] The invention relates to a preparation method of a coating, in particular to a water-based polyurethane heat-insulating and sound-absorbing coating, which belongs to the technical field of chemical composition and its preparation. Background technique [0002] In order to study paints with volatile organic compounds (VOC) below the regulations, paint scientists have so far created a series of new paint and coating technology systems: powder coatings, radiation-cured coatings (UV / EB systems), water-based coatings , High-solid coatings and solvent-free coatings, among which powder coatings and radiation-cured coatings require special equipment for construction; although high-solid coatings are very close to ordinary solvent-based coatings in performance, they are still inconvenient in construction For example, construction equipment is difficult to clean and thermal sag phenomenon, etc.; and solvent-free coatings generally refer to solvent-free epoxy flo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/12C09D7/00
CPCC09D175/14C08L2201/08C08L2205/035C09D7/61C09D7/63C08L97/02C08L33/08C08L83/04C08K13/02C08K2003/2241C08K5/12C08K5/56
Inventor 谢刚陆俊行甘伟平
Owner GUANGXI CHAOXING SOLAR ENERGY TECH
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