Antibacterial polyurethane-modified asphalt waterproof coating and preparation method thereof

An asphalt waterproof coating, polyurethane modification technology, applied in asphalt coatings, antifouling/underwater coatings, coatings, etc., can solve the problem of poor binding force between calcium carbonate and the coating body, deterioration of coating material performance, and difficult processing and use of products. and other problems to achieve the effects of improving mechanical properties, eliminating cohesion and uniform distribution

Inactive Publication Date: 2018-04-13
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

[0005] However, in the above-mentioned patent documents, the fillers (such as expanded perlite powder and mica powder) are not modified, and there will be obvious disadvantages when filled in the coating: one is that the surface is hydrophilic and oleophobic, and it is dispersed in the coating. The second is that the binding force between calcium carbonate and the paint body is poor, and it can only act as a compatibilizer. When a high proportion of calcium carbonate is used for filling, the performance of the paint material will drop sharply, so that the product is difficult to be processed and used.

Method used

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  • Antibacterial polyurethane-modified asphalt waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] An antibacterial polyurethane modified asphalt waterproof coating is made of the following raw materials in parts by weight:

[0049] 80 parts of polyurethane prepolymer;

[0050] 90 parts of 90# petroleum asphalt;

[0051] 10 parts of modified nano calcium carbonate;

[0052] 5 parts of diethylenetriaminopropyltrimethoxysilane;

[0053] 3 parts of tackifier;

[0054] 5 parts of n-butyl acetate;

[0055] 3 parts citric acid;

[0056] 4 parts of dibutyltin dilaurate;

[0057] 0.5 part of polyoxyethylene polyoxypropanolamine ether;

[0058] 3 parts of fumed silica;

[0059] Chitosan 2 parts;

[0060] 1 part of 2-methyl-4-isothiazolin-3-one.

[0061] 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 titanate coupling agent KR-201 was ...

Embodiment 2

[0071] An antibacterial polyurethane modified asphalt waterproof coating is made of the following raw materials in parts by weight:

[0072] 85 parts of polyurethane prepolymer;

[0073] 95 parts of 90# petroleum asphalt;

[0074] 15 parts of modified nano calcium carbonate;

[0075] 7 parts of diethylenetriaminopropyltrimethoxysilane;

[0076] 4 parts of tackifier;

[0077] 7 parts of n-butyl acetate;

[0078] 5 parts of citric acid;

[0079] 5 parts of dibutyltin dilaurate;

[0080] 1 part of polyoxyethylene polyoxypropanolamine ether;

[0081] 4 parts of fumed silica;

[0082] Chitosan 2.5 parts;

[0083] 1.5 parts of 2-methyl-4-isothiazolin-3-one.

[0084] 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 titanate coupling agent KR-201 ...

Embodiment 3

[0094] An antibacterial polyurethane modified asphalt waterproof coating is made of the following raw materials in parts by weight:

[0095] 90 parts of polyurethane prepolymer; 100 parts of 90# petroleum asphalt; 20 parts of modified nano-calcium carbonate; 8 parts of diethylenetriaminopropyltrimethoxysilane; 5 parts of tackifier; 9 parts of n-butyl acetate; 6 parts of acid; 6 parts of dibutyltin dilaurate;

[0096] 2 parts of polyoxyethylene polyoxypropanolamine ether; 5 parts of fumed silica; 3 parts of chitosan; 2 parts of 2-methyl-4-isothiazolin-3-one.

[0097] 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 titanate coupling agent KR-201 was modified at 90°C for 10 minutes; then 2.0% of stearic acid, 0.5% of coconut oil and 1% of industria...

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Abstract

Antibacterial polyurethane-modified asphalt waterproof coating and a preparation method thereof are provided. The antibacterial polyurethane-modified asphalt waterproof coating is prepared from polyurethane prepolymer, No. 90 petroleum asphalt, modified nano calcium carbonate, 3-[2-(2-aminoethylamino)ethylamino]propyl-trimethoxysilane, a tackifier, n-butyl acetate, citric acid, dibutyltin dilaurate, polyoxyethylene polyoxypropylene ether, fumed silica, chitosan and 2-methyl-4-isothiazoline-3-one. The preparation method comprises: modifying No. 90 petroleum asphalt with polyurethane prepolymerand modified nano calcium carbonate; adding 3-[2-(2-aminoethylamino)ethylamino]propyl-trimethoxysilane, citric acid and n-butyl acetate into a reactor, and stirring well; adding chitosan, 2-methyl-4-isothiazoline-3-one, fumed silica, the tackifier and dibutyltin dilaurate, and stirring well; adding polyoxyethylene polyoxypropylene ether; continuing to stir until no powder floats; shearing all thematerials until good dispersion to obtain the coating.

Description

technical field [0001] The invention relates to a preparation method of a paint, in particular to an antibacterial polyurethane modified asphalt waterproof paint and a preparation method thereof, which belong to the technical field of chemical composition and its preparation. Background technique [0002] Waterproof coatings are made of synthetic polymer prepolymers, polymers and asphalt, polymers and cement as the main film-forming substances: solvent-based, Water emulsion or powder coating. The paint is applied on the base surface of the roof, basement, toilet, bathroom and exterior wall of the building that needs to be waterproofed. It can form a continuous, integral and waterproof coating with a certain thickness under normal temperature conditions. Existing waterproof coatings tend to breed bacteria and fungi when stored for a long time, and tend to affect the smeared parts after application, and cannot effectively resist the original bacteria and fungi on the smeared...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D195/00C09D175/08C09D5/14C09D7/61C09D7/62
CPCC09D195/00C08K2003/265C08K2201/011C08L2201/08C08L2205/035C09D5/14C08L75/08C08L5/08C08K13/06C08K9/04C08K3/26C08K3/36C08K5/47
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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