Polyurethane modified asphalt waterproof paint and preparation method thereof

A technology of asphalt waterproof coating and polyurethane modification, applied in asphalt coatings, antifouling/underwater coatings, fire-retardant coatings, etc., can solve the problem of poor binding force between calcium carbonate and coating body, deterioration of coating material performance, and difficult processing and use of products and other problems, to achieve the effect of improving mechanical properties, oil resistance and flexural resistance, and uniform distribution.

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

[0006] 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

Method used

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  • Polyurethane modified asphalt waterproof paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A polyurethane-modified asphalt waterproof coating made of the following raw materials by weight:

[0044] 80 parts of polyurethane prepolymer;

[0045] 90# petroleum asphalt 90 parts;

[0046] 10 parts of modified nano calcium carbonate;

[0047] 5 parts of vinyl trichlorosilane;

[0048] Tackifier 3 parts;

[0049] 5 parts of n-butyl acetate;

[0050] 3 parts of citric acid;

[0051] 4 parts of dibutyltin dilaurate;

[0052] 0.5 part of polyoxyethylene polyoxypropanolamine ether;

[0053] 3 parts of fumed silica.

[0054] The method for preparing the modified nano-calcium carbonate is: dehydrating and drying the nano-calcium carbonate powder at 115-120°C, then adding it to a high-speed mixer, stirring and raising the temperature, stopping heating at 90°C, and adding 2.0% of the nano-calcium carbonate mass The chelating titanate coupling agent KR-201 was modified at 90℃ for 10 minutes; then 2.0% stearic acid, 0.5% coconut oil and 1% industrial white oil were added to the nano-calcium...

Embodiment 2

[0064] A polyurethane-modified asphalt waterproof coating made of the following raw materials by weight:

[0065] 85 parts of polyurethane prepolymer;

[0066] 90# petroleum asphalt 95 parts;

[0067] 15 parts of modified nano calcium carbonate;

[0068] 7 parts of vinyl trichlorosilane;

[0069] Tackifier 4 parts;

[0070] 7 parts of n-butyl acetate;

[0071] 5 parts of citric acid;

[0072] 5 parts of dibutyltin dilaurate;

[0073] Polyoxyethylene polyoxypropanolamine ether 1 part;

[0074] 4 parts of fumed silica.

[0075] The method for preparing the modified nano-calcium carbonate is: dehydrating and drying the nano-calcium carbonate powder at 115-120°C, then adding it to a high-speed mixer, stirring and raising the temperature, stopping the heating at 90°C, and adding 2.0% of the nano-calcium carbonate mass The chelating titanate coupling agent KR-201 was modified at 90℃ for 10 minutes; then 2.0% stearic acid, 0.5% coconut oil and 1% industrial white oil were added to the nano-calcium ...

Embodiment 3

[0085] A polyurethane-modified asphalt waterproof coating made of the following raw materials by weight:

[0086] 90 parts of polyurethane prepolymer;

[0087] 90# petroleum asphalt 100 parts;

[0088] 20 parts of modified nano calcium carbonate;

[0089] 8 parts of vinyl trichlorosilane;

[0090] Tackifier 5 parts;

[0091] 9 parts of n-butyl acetate;

[0092] 6 parts of citric acid;

[0093] 6 parts of dibutyltin dilaurate;

[0094] 2 parts of polyoxyethylene polyoxypropanolamine ether;

[0095] 5 parts of fumed silica.

[0096] The method for preparing the modified nano-calcium carbonate is: dehydrating and drying the nano-calcium carbonate powder at 115-120°C, then adding it to a high-speed mixer, stirring and raising the temperature, stopping the heating at 90°C, and adding 2.0% of the nano-calcium carbonate mass The chelating titanate coupling agent KR-201 was modified at 90℃ for 10 minutes; then 2.0% stearic acid, 0.5% coconut oil and 1% industrial white oil were added to the nano-cal...

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Abstract

The invention relates to a polyurethane modified asphalt waterproof paint and a preparation method thereof. The paint is prepared from a polyurethane prepolymer, 90# petroleum asphalt, modified nano calcium carbonate, vinyl trichlorosilane, a tackifier, n-butyl acetate, citric acid, dibutyltin dilaurate, polyoxyethylene polyoxypropylene ether and fumed silica. The preparation method includes: modifying the 90# petroleum asphalt with the polyurethane prepolymer and modified nano calcium carbonate; then adding vinyl trichlorosilane, citric acid and n-butyl acetate into a reaction kettle, and stirring the substances evenly; then adding fumed silica, the tackifier and dibutyltin dilaurate, and stirring the substances evenly; then adding polyoxyethylene polyoxypropylene ether; further performing stirring till no powder flotation; shearing all the materials in the reaction kettle on a high speed shearing machine again until the 90# petroleum asphalt and other materials are evenly dispersed,thus obtaining the polyurethane modified asphalt waterproof paint. The product provided by the invention has the advantages of high bonding strength, high tensile strength and good dispersibility.

Description

Technical field [0001] The invention relates to a preparation method of a coating, in particular to a polyurethane modified asphalt waterproof coating and a preparation method thereof, belonging to the technical field of chemical compositions and preparations thereof. Background technique [0002] Petroleum bitumen has good cohesiveness, aging resistance and waterproof ability, and has long been widely used as materials for road construction, waterproofing and sealing. It has the advantages of easy availability of raw materials and low price for waterproof engineering. It is one of the most widely used materials in waterproof and anti-seepage engineering at home and abroad; polyurethane asphalt has a wide range of applications, long life, weather resistance, deformation resistance, and tensile strength High, high elongation, strong adaptability to base layer shrinkage and cracking deformation, superior acid resistance, alkali resistance, anti-corrosion and waterproof performance,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D195/00C09D175/08C09D5/16C09D7/62C09D7/63
CPCC09D195/00C08K2003/265C08K2201/011C08L2201/08C08L2205/03C09D5/1662C09D5/1687C09D5/18C08L75/08C08K13/06C08K9/10C08K9/04C08K3/26C08K3/36C08K5/5406
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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