Flame retardant polyurethane modified asphalt waterproof paint and preparation method thereof

A technology of asphalt waterproof coating and polyurethane modification, applied in the direction of asphalt coating, antifouling/underwater coating, fireproof coating, etc., can solve the problem of poor binding force between calcium carbonate and coating body, difficult processing and use of products, and deterioration of coating material performance and other problems, to achieve the effect of strong self-cleaning, small shrinkage and good flame retardant performance

Inactive Publication Date: 2018-05-18
GUANGXI WUXUAN JINPAI WATERPROOF MATERIAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned patent documents, the fillers therein are all unmodified, and there will be obvious disadvantages when filled in the coating: one is that the surface is hydrophilic and oleophobic, and the dispersibility in the coating is poor; the other is that calcium carbonate is combined with the coating body Poor strength, it can only play a compatibilizing role. When filling with a high proportion of calcium carbonate, the performance of the coating material will drop sharply, so that the product is difficult to be processed and used
Polyurethane asphalt waterproof coatings are widely used in waterproof construction in my country due to the advantages of wide source of raw materials and low cost. However, because they are flammable materials, they cannot meet the fire protection requirements of some special buildings such as wooden buildings. range is limited

Method used

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  • Flame retardant polyurethane modified asphalt waterproof paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A flame-retardant polyurethane modified asphalt waterproof coating is made of the following raw materials in parts by weight:

[0050] 80 parts of polyurethane prepolymer;

[0051] 90 parts of 90# petroleum asphalt;

[0052] 10 parts of modified nano calcium carbonate;

[0053] 5 parts of diethylenetriaminopropyltrimethoxysilane;

[0054] 3 parts of tackifier;

[0055] 5 parts of n-butyl acetate;

[0056] 3 parts citric acid;

[0057] 4 parts of dibutyltin dilaurate;

[0058] 0.5 part of polyoxyethylene polyoxypropanolamine ether;

[0059] 3 parts of fumed silica;

[0060] 1.6 parts of dimethyl methylphosphonate;

[0061] 3.2 parts of microencapsulated red phosphorus.

[0062] The preparation method of the modified nano-calcium carbonate is as follows: dehydrate and dry the nano-calcium carbonate powder at 115-120°C, then add it to a high-speed mixer, stir and heat up, stop heating at 90°C, and add 2.0% of the mass of nano-calcium carbonate The chelating titan...

Embodiment 2

[0072] A flame-retardant polyurethane modified asphalt waterproof coating is made of the following raw materials in parts by weight:

[0073] 85 parts of polyurethane prepolymer;

[0074] 95 parts of 90# petroleum asphalt;

[0075] 15 parts of modified nano calcium carbonate;

[0076] 7 parts of diethylenetriaminopropyltrimethoxysilane;

[0077] 4 parts of tackifier;

[0078] 7 parts of n-butyl acetate;

[0079] 5 parts of citric acid;

[0080] 5 parts of dibutyltin dilaurate;

[0081] 1 part of polyoxyethylene polyoxypropanolamine ether;

[0082] 4 parts of fumed silica;

[0083] 1.7 parts of dimethyl methylphosphonate;

[0084] 3.4 parts of microencapsulated red phosphorus.

[0085] The preparation method of the modified nano-calcium carbonate is as follows: dehydrate and dry the nano-calcium carbonate powder at 115-120°C, then add it to a high-speed mixer, stir and heat up, stop heating at 90°C, and add 2.0% of the mass of nano-calcium carbonate The chelating tita...

Embodiment 3

[0095] A flame-retardant polyurethane modified asphalt waterproof coating is made of the following raw materials in parts by weight:

[0096] 90 parts of polyurethane prepolymer;

[0097] 100 parts of 90# petroleum asphalt;

[0098] 20 parts of modified nano calcium carbonate;

[0099] 8 parts of diethylenetriaminopropyltrimethoxysilane;

[0100] 5 parts of tackifier;

[0101] 9 parts of n-butyl acetate;

[0102] 6 parts of citric acid;

[0103] 6 parts of dibutyltin dilaurate;

[0104] 2 parts of polyoxyethylene polyoxypropanolamine ether;

[0105] Fumed silica 5 parts.

[0106] 2.4 parts of dimethyl methylphosphonate;

[0107] 4.8 parts of microencapsulated red phosphorus.

[0108] The preparation method of the modified nano-calcium carbonate is as follows: dehydrate and dry the nano-calcium carbonate powder at 115-120°C, then add it to a high-speed mixer, stir and heat up, stop heating at 90°C, and add 2.0% of the mass of nano-calcium carbonate The chelating titan...

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Abstract

The invenrion relates to a flame retardant polyurethane modified asphalt waterproof paint. The paint is prepared from a polyurethane prepolymer, 90# petroleum asphalt, modified nano calcium carbonate,trimethoxysilyl propyl diethylenetriamine, a tackifier, n-butyl acetate, citric acid, dibutyltin dilaurate, polyoxyethylene polyoxypropylene ether, fumed silica and a flame retardant mixture. The preparation method includes: modify 90# petroleum asphalt with the polyurethane prepolymer and modified nano calcium carbonate; then adding trimethoxysilyl propyl diethylenetriamine, citric acid and n-butyl acetate into the reaction kettle, and stirring the substances evenly; then adding the flame retardant mixture, fumed silica, the tackifier and dibutyltin dilaurate, and blending the substances evenly; then adding polyoxyethylene polyoxypropylene ether; then further performing stirring till no powder flotation; and shearing all the materials again till uniform dispersion of 90# petroleum asphalt and other materials, thus obtaining the product.

Description

technical field [0001] The invention relates to a preparation method of a coating, in particular to a flame-retardant polyurethane modified asphalt waterproof coating and a preparation method thereof, belonging to the technical field of chemical composition and its preparation. Background technique [0002] Petroleum asphalt has good adhesion, aging resistance and waterproof ability, and has been widely used as road construction, waterproof and sealing materials for a long time. It is one of the most widely used materials in waterproof and anti-seepage projects at home and abroad because of the advantages of easy-to-obtain raw materials and low prices for waterproofing projects; polyurethane asphalt has a wide range of applications, long life, weather resistance, deformation resistance, and tensile strength High, large elongation, strong adaptability to base shrinkage and cracking deformation, acid resistance, alkali resistance, anti-corrosion and waterproof performance, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D195/00C09D5/18C09D5/16C09D7/61C09D7/63C09D7/65C09D7/62
CPCC09D195/00C08K2003/026C08K2003/265C08L2201/22C08L2205/035C09D5/1662C09D5/1687C09D5/18C08L75/04C08L93/04C08K13/06C08K9/00C08K9/04C08K9/08C08K3/26C08K3/02C08K3/36C08K5/5333
Inventor 刘拥军刘永刚郑新国郑爱彬候尚春
Owner GUANGXI WUXUAN JINPAI WATERPROOF MATERIAL SCI & TECH CO LTD
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