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High-hardness water-resistant polyurethane marine coating

A technology of water-based polyurethane and water resistance, applied in the field of coatings, can solve the problems of shortening the service life of marine coatings, not very ideal hardness, not very good water resistance, etc., and achieve the effects of shortening curing time, increasing hardness and improving water resistance

Inactive Publication Date: 2015-09-30
WUHU SHUANGBAO BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hardness of the existing marine coatings is not very ideal. In the process of sailing, it is easy to be scratched and loses its performance. In addition, its water resistance is not very good, which shortens the service life of marine coatings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of high-hardness water-resistant polyurethane marine coating proposed by the present invention, its raw material comprises the following components by weight: 50 parts of modified water-based polyurethane emulsion, 20 parts of polytetrafluoroethylene, 3 parts of hydroxyl-terminated polybutadiene liquid rubber, 5 parts of 4,4'-diphenylmethane diisocyanate, 4 parts of kaolin, 3 parts of silicon nitride, 15 parts of diethylene glycol, 5 parts of propylene glycol, 15 parts of diacetone alcohol, 3-aminopropyltriethoxysilane 3 parts, 8 parts of ethylene glycol butyl ether, 2 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 2-butyl-2-ethyl-1,3- 10 parts of propylene glycol, 10 parts of deionized water, 8 parts of leveling agent;

[0018] Wherein, the modified water-based polyurethane emulsion is prepared according to the following process: mix 30 parts of polyoxypropylene diol, 70 parts of toluene diisocyanate and 1 part of dibutyltin dilaurate in parts by weig...

Embodiment 2

[0020] A kind of high-hardness water-resistant polyurethane marine coating proposed by the present invention, its raw material comprises the following components by weight: 60 parts of modified water-based polyurethane emulsion, 15 parts of polytetrafluoroethylene, 9 parts of hydroxyl-terminated polybutadiene liquid rubber, 1 part of 4,4'-diphenylmethane diisocyanate, 10 parts of kaolin, 9 parts of silicon nitride, 5 parts of diethylene glycol, 10 parts of propylene glycol, 10 parts of diacetone alcohol, 3-aminopropyltriethoxysilane 10 parts, 4 parts of ethylene glycol butyl ether, 10 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 2-butyl-2-ethyl-1,3- 1 part of propylene glycol, 20 parts of deionized water, 2 parts of additives;

[0021] Wherein, the modified water-based polyurethane emulsion is prepared according to the following process: 45 parts of polyoxypropylene diol, 50 parts of toluene diisocyanate and 2.5 parts of dibutyltin dilaurate are mixed uniformly by...

Embodiment 3

[0023]A kind of high-hardness water-resistant polyurethane marine coating proposed by the present invention, its raw material comprises the following components by weight: 53 parts of modified water-based polyurethane emulsion, 20 parts of polytetrafluoroethylene, 5 parts of hydroxyl-terminated polybutadiene liquid rubber, 4.5 parts of 4,4'-diphenylmethane diisocyanate, 5 parts of kaolin, 8 parts of silicon nitride, 7 parts of diethylene glycol, 9 parts of propylene glycol, 12 parts of diacetone alcohol, 3-aminopropyltriethoxysilane 8 parts, 5 parts of ethylene glycol butyl ether, 8 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 2-butyl-2-ethyl-1,3- 2 parts of propylene glycol, 18 parts of deionized water, 1 part of defoamer, 2 parts of leveling agent, 2 parts of thickener;

[0024] Wherein, the modified water-based polyurethane emulsion is prepared according to the following process: 33 parts of polyoxypropylene diol, 66 parts of toluene diisocyanate and 1.6 parts ...

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Abstract

The invention discloses a high-hardness water-resistant polyurethane marine coating. Raw materials of the marine coating comprise the following ingredients, by weight, 50-60 parts of a modified waterborne polyurethane emulsion, 15-20 parts of teflon, 3-9 parts of hydroxyl-terminated polybutadiene liquid rubber, 1-5 parts of 4,4'-methyl diphenylene diisocyanate, 4-10 parts of kaolin, 3-9 parts of silicon nitride, 5-15 parts of diglycol, 5-10 parts of propylene glycol, 10-15 parts of diacetone alcohol, 3-10 parts of 3-aminopropyltriethoxysilane, 4-8 parts of ethylene glycol monobutyl ether, 2-10 parts of 2,2,4-trimethyl-1,3-pentanediol isobutyrate, 1-10 parts of 2-butyl-2-ethyl-1,3-propylene glycol, 10-20 parts of deionized water and 2-8 parts of an auxiliary agent. The high-hardness water-resistant polyurethane marine coating brought forward in the invention has advantages of high hardness, good scratch resistance and excellent water resistance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a high-hardness water-resistant polyurethane marine coating. Background technique [0002] Marine coatings are a general term for coatings used in various parts of ships and marine engineering structures to meet the special requirements of preventing seawater, marine atmospheric corrosion, marine organisms, and other special requirements. Coatings used for ships are required to have good adhesion, good water resistance, chemical resistance and abrasion resistance; they can be used under harsh conditions such as the ocean, and have a long-term anti-rust life. It can be used for up to 10 or 15 years. However, the hardness of the existing marine coatings is not very satisfactory, and they are easily scratched during the navigation of the ship and lose their performance. In addition, their water resistance is not very good, which shortens the service life of the marine coatings. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D127/18C09D7/12C08G18/48C08G18/58C08G18/34C08G18/76C08G18/66
Inventor 胡昌悌
Owner WUHU SHUANGBAO BUILDING MATERIAL
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