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Water-resistant flame-retardant polyurethane metal paint

A metal coating and polyurethane technology, which is applied in polyurea/polyurethane coatings, fireproof coatings, coatings, etc., can solve problems such as unsatisfactory water resistance, foaming and cracking, and affecting use, so as to improve the softening and crosslinking of coatings Increased temperature, enhanced heat resistance and tensile properties

Inactive Publication Date: 2016-03-09
NINGGUO LONGSHI METAL PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if water-based polyurethane is used without flame retardant treatment, it will often become a safety hazard that causes fire.
At the same time, the water resistance of water-based polyurethane coatings in the prior art is not ideal enough, often foaming and cracking, affecting the use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A water-resistant and flame-retardant polyurethane metal coating proposed by the present invention, its raw materials include by weight: 90 parts of flame-retardant polyurethane, 15 parts of water-based melamine-formaldehyde resin, 5 parts of water-based acrylic resin, 6 parts of sodium carboxymethyl cellulose, and 12 parts of bentonite 30 parts of diatomite, 5 parts of nano-titanium dioxide, 2 parts of microencapsulated red phosphorus, 15 parts of preservative, 2 parts of defoamer, 2 parts of leveling agent, and 4 parts of pigment.

[0020] The preparation method of flame-retardant polyurethane is as follows: 45 parts by weight of tung oil polyol and 10 parts of N,N-bis(2-hydroxyethyl)aminomethylenephosphonic acid diethyl ester are heated to 98 ° C, kept for 3 hours, and vacuum dehydrated Obtain the first material; After 25 parts of xylylene diisocyanate and the first material are mixed, pass into N 2 Protection, heat up to 90°C, keep warm for 1.5h, then cool down to 3...

Embodiment 2

[0023] A water-resistant and flame-retardant polyurethane metal coating proposed by the present invention, its raw materials include by weight: 100 parts of flame-retardant polyurethane, 10 parts of water-based melamine-formaldehyde resin, 10 parts of water-based acrylic resin, 3 parts of sodium carboxymethyl cellulose, and 15 parts of bentonite 20 parts of diatomite, 8 parts of nano-titanium dioxide, 1 part of microencapsulated red phosphorus, 20 parts of preservative, 1 part of defoamer, 3 parts of leveling agent, and 2 parts of pigment.

[0024] The preparation method of flame-retardant polyurethane is as follows: 55 parts by weight of tung oil polyol and 7 parts of N,N-bis(2-hydroxyethyl)aminomethylenephosphonic acid diethyl ester are heated to 102°C, kept for 2 hours, and vacuum dehydrated Obtain the first material; After 30 parts of xylylene diisocyanate and the first material are mixed, pass into N 2 Protection, heat up to 80°C, keep warm for 2.5h, then cool down to 30°C,...

Embodiment 3

[0027] A kind of water-resistant and flame-retardant polyurethane metal coating proposed by the present invention, its raw material comprises by weight: 93 parts of flame-retardant polyurethane, 13 parts of water-based melamine formaldehyde resin, 6 parts of water-based acrylic resin, 5 parts of sodium carboxymethyl cellulose, 13 parts of bentonite 25 parts of diatomite, 6 parts of nano-titanium dioxide, 1.8 parts of microencapsulated red phosphorus, 16 parts of preservative, 1.6 parts of defoamer, 2.5 parts of leveling agent, and 3.4 parts of pigment.

[0028] The preparation method of flame-retardant polyurethane is as follows: 48 parts by weight of tung oil polyol and 9 parts of N,N-bis(2-hydroxyethyl)aminomethylenephosphonic acid diethyl ester are heated up to 99°C, kept for 2.8h, vacuum Dehydration obtains the first material; After mixing 26 parts of xylylene diisocyanate and the first material, pass into N 2 Protection, heat up to 88°C, keep warm for 1.8h, then cool down...

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PUM

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Abstract

The invention discloses a water-resistant flame-retardant polyurethane metal paint. The paint comprises the following raw materials: flame-retardant polyurethane, aqueous melamine-formaldehyde resin, aqueous acrylic resin, sodium carboxymethyl cellulose, bentonite, diatomite, nano titanium dioxide, micro-encapsulation red phosphorus, antiseptic, antifoaming agent, flatting agent, and pigment. The preparation method of flame-retardant polyurethane comprises the following steps: mixing tung oil polyol and N,N-bis(2-hydroethyl)amino methylene diethyl phosphite, heating the mixture, maintaining the temperature, carrying out vacuum dehydration to obtain a first material; mixing m-phenylene dimethylene isocyanate and the first material, heating, maintaining the temperature, cooling, adding trimethyl pentanediol, dihydroxymethyl butyric acid, glucose, and acetone, then adding dibutyl tin dilaurate, heating, maintaining the temperature, cooling, dropwise adding a mixed solution containing bis(2-hydroxypropyl)aniline and N-butyl diethanolamine, heating, maintaining the temperature, carrying out neutralization, adding water to carry out emulsification and dispersion, and finally performing vacuum distillation to obtain the flame-retardant polyurethane. The provided paint has excellent flame-retardant and water-resistant properties.

Description

technical field [0001] The invention relates to the technical field of flame-retardant coatings, in particular to a water-resistant and flame-retardant polyurethane metal coating. Background technique [0002] With the rapid development of modern industry, the anti-corrosion of metal surfaces has been paid more and more attention by all walks of life. It is an economical and effective method to use paint to coat anti-corrosion. For industrial and mining enterprises, the huge economic losses caused by metal corrosion are incalculable, accounting for about 15-20% of global steel production. It can be seen how important corrosion protection is. There are many ways to prevent metal corrosion, such as the use of electroplating and cathodic protection, which cause emission pollution and are not conducive to environmental protection; there is also the use of corrosion-resistant alloys, which play an anti-corrosion role, but the project cost is high. It has been proved by practice ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D161/28C09D133/00C09D101/28C09D5/18C09D7/12C08G18/36
Inventor 周立
Owner NINGGUO LONGSHI METAL PROD CO LTD
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