A kind of polyurethane exterior wall anticorrosion flame retardant coating and preparation method thereof

A flame retardant coating, polyurethane technology, applied in the direction of polyurea/polyurethane coatings, anti-corrosion coatings, fire-resistant coatings, etc., can solve the problems such as not very mature, achieve the effect of improving the strength of the paint film, shortening the baking time, and increasing the hydrophobicity

Active Publication Date: 2017-12-08
莫明鑫
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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 coating that is flame-retardant, lightweight, waterproof, anti-corrosion, environmentally friendly, not easy to age, and long-lasting. Therefore, people are still researching water-based coatings. test

Method used

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  • A kind of polyurethane exterior wall anticorrosion flame retardant coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] First, according to weight parts, 45 parts of polyurethane prepolymer, 2 parts of N-methylol acrylamide, 3 parts of dioctyl terephthalate, 0.5 parts of titanate coupling agent TMC-101, dispersant ammonium polyacrylate Salt DA40 0.3 parts, rutile titanium dioxide 15 parts, antifoaming agent polyoxypropylene glyceryl ether 0.2 parts, silica lime powder 6 parts, mixed solvent (lignin + propylene glycol methyl ether + water, the weight ratio is 2:1:9) 12 parts, flame retardant material (prepared by weight ratio of pentaerythritol and xylenyl phosphate 1:1) 5 parts, preservative (2-methyl-4-isothiazolin-3-one) 3 parts, coloring pigment molybdenum chrome red One part and 2 parts of leveling agent acrylate are prepared.

[0046] The production method is to add 1.8 kg of ethanol with a volume concentration of 70-85% per kg of N-methylol acrylamide by weight to dissolve it, and then mix it with the polyurethane prepolymer in the reactor. The reaction temperature is 80°C and the rea...

Embodiment 2

[0048] First, according to the weight parts, 50 parts of polyurethane prepolymer, 3 parts of N-methylol acrylamide, 4 parts of dioctyl terephthalate, 0.7 parts of titanate coupling agent TMC-101, dispersant ammonium polyacrylate Salt DA40 0.5 parts, rutile titanium dioxide 17 parts, antifoaming agent polyoxypropylene glyceryl ether 0.3 parts, silica lime powder 8 parts, mixed solvent (lignin + propylene glycol methyl ether + water, the weight ratio is 2:1:9) 14 parts, flame-retardant materials (prepared by weight ratio of pentaerythritol and melamine 1:1) 8 parts, preservative (5-chloro-2-methyl-4-isothiazolin-3-one) 5 parts, coloring Prepare 2 parts of pigment toluidine red and 3 parts of antifreeze benzyl alcohol.

[0049] The production method is to add 1.8 kg of ethanol with a volume concentration of 70-85% per kg of N-methylol acrylamide by weight, and then mix it with the polyurethane prepolymer in the reactor. The reaction temperature is 120°C, and the reaction time is 1.5...

Embodiment 3

[0051] First, according to the weight parts, 55 parts of polyurethane prepolymer, 4 parts of N-methylol acrylamide, 5 parts of dioctyl terephthalate, 1.0 part of titanate coupling agent TMC-101, dispersant ammonium polyacrylate Salt DA 400.6 parts, rutile titanium dioxide 20 parts, antifoaming agent polyoxypropylene glycerol ether 0.5 parts, silica lime powder 10 parts, mixed solvent (lignin + propylene glycol methyl ether + water, the weight ratio is 2:1:9 ) 15 parts, flame-retardant materials (prepared by weight ratio of dimethyl phosphate and melamine 1:1) 10 parts, preservative (5-chloro-2-methyl-4-isothiazolin-3-one) 7 parts, one part of coloring pigment phthalocyanine blue B, 5 parts of anti-settling agent organic bentonite, prepare materials.

[0052] The production method is to add 1.8 kg of ethanol with a volume concentration of 70-85% per kg of N-methylol acrylamide by weight to dissolve it, and then mix it with the polyurethane prepolymer in the reactor. The reaction t...

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Abstract

The invention discloses a polyurethane exterior-wall anti-corrosive flame-retarded coating and a preparation method thereof. The polyurethane exterior-wall anti-corrosive flame-retarded coating is prepared from the following components: polyurethane prepolymer, N-hydroxymethyl acrylamide, dioctyl terephthalate, a titanate coupling agent TMC-101, a dispersing agent ammonium polyacrylate DA40, rutile type titanium dioxide, polyoxypropylene glycerol ether, siliceous lime powder, a mixed solvent, a flame-retarded material and a preservative. The preparation method comprises the following steps: adding 1.8kg of alcohol with volume concentration of 70-85% to dissolve every kilogram of N-hydroxymethyl acrylamide to obtain a mixture; then, mixing the mixture with the polyurethane prepolymer, and adding the titanate coupling agent TMC-101 and the dispersing agent ammonium polyacrylate DA40 after reacting for 1.3-1.8 hours at a reaction temperature of 80-130 DEG C; continuously reacting for 3.5-5.5 hours; adding dioctyl terephthalate, rutile type titanium dioxide, polyoxypropylene glycerol ether, the flame-retarded material, the siliceous lime powder, the mixed solvent and the preservative to uniformly mix to obtain the polyurethane exterior-wall anti-corrosive flame-retarded coating product.

Description

Technical field [0001] The invention relates to an anticorrosive and flame retardant coating, in particular to a polyurethane exterior wall anticorrosive and flame retardant coating and a preparation method thereof, belonging to the technical field of chemical compositions and preparation thereof. Background technique [0002] With the development of the construction industry, the demand for coatings is increasing day by day. Paint is a kind of material, which can be coated on the surface of the object by different construction techniques to form a solid film with firm adhesion, certain strength and continuous. The film formed in this way is generally called coating film, also known as paint film or coating . Objects are exposed to the atmosphere and are corroded by oxygen, moisture, etc., which can easily cause damage such as metal corrosion, wood decay, and cement weathering. Paint the surface of the object to form a protective film that can prevent or delay these damage pheno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D5/08C09D5/18C09D5/33C09D7/12C09D7/00
CPCC08L2201/02C08L2205/035C09D5/004C09D5/08C09D5/18C09D7/20C09D7/61C09D7/63C09D7/65C09D175/14C08L33/02C08L97/005C08L71/02C08K5/12C08K2003/2241C08K3/34C08K5/053C08K5/523
Inventor 谢刚马云马广李珠肖
Owner 莫明鑫
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