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Microcapsule type self-repairing anticorrosive paint and preparation method thereof

A technology of anti-corrosion coatings and microcapsules, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems that cannot meet the requirements of practical applications, and achieve the effect of protection from damage and corrosion

Inactive Publication Date: 2016-09-21
WUXI EPIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no technology of adding microcapsules to coatings, and it cannot meet the requirements of practical applications. It is necessary to develop self-healing coatings that meet actual needs through research and cooperation of various disciplines.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A microcapsule type self-repairing anticorrosion coating, comprising the following components in parts by weight: 40-60 parts of xylene, 10-15 parts of polyurethane microcapsules, 20-40 parts of urea-formaldehyde resin, and 8 parts of dibutyl phthalate ~15 parts, polypropylene glycol 0.05~0.2 parts, polyamide wax powder MT6650 0.3~0.6 parts, mercaptobenzothiazole 3~8 parts, butyl stearate 0.3~0.8 parts, trimethylhexamethylenediamine 5~20 parts .

[0020] The preparation method of described microcapsule type self-repairing anticorrosion coating, comprises the following steps:

[0021] (1) Add urea-formaldehyde resin and butyl stearate in the seasoning kettle, add dibutyl phthalate and xylene under stirring, and stir at a high speed to make it disperse evenly;

[0022] (2) Add mercaptobenzothiazole, polyurethane microcapsules, polypropylene glycol and polyamide wax powder MT6650 under low-speed stirring, and disperse evenly;

[0023] (3) Add trimethylhexamethylenediamin...

Embodiment 2

[0025] A microcapsule type self-repairing anticorrosion coating, comprising the following components in parts by weight: 40-60 parts of xylene, 10-15 parts of polyurethane microcapsules, 20-40 parts of urea-formaldehyde resin, and 8 parts of dibutyl phthalate ~15 parts, polypropylene glycol 0.05~0.2 parts, polyamide wax powder MT6650 0.3~0.6 parts, hexamethylene diisocyanate 3~8 parts, Disperbyk-162 0.3~0.8 parts, diaminodiphenylsulfone 5~20 parts .

[0026] The preparation method of described microcapsule type self-repairing anticorrosion coating, comprises the following steps:

[0027] (1) Add urea-formaldehyde resin and Disperbyk-162 into the seasoning kettle, add dibutyl phthalate and xylene under stirring, and stir at high speed to disperse evenly;

[0028] (2) Add hexamethylene diisocyanate, polyurethane microcapsules, polypropylene glycol and polyamide wax powder MT6650 under low-speed stirring, and disperse evenly;

[0029] (3) Adding diaminodiphenyl sulfone to solid...

Embodiment 3

[0031] A microcapsule type self-repairing anticorrosion coating, comprising the following components in parts by weight: 40-60 parts of xylene, 10-15 parts of polyurethane microcapsules, 20-40 parts of urea-formaldehyde resin, and 8 parts of dibutyl phthalate ~15 parts, polypropylene glycol 0.05~0.2 parts, polyamide wax powder MT6650 0.3~0.6 parts, mercaptobenzothiazole 3~8 parts, butyl stearate 0.3~0.8 parts, trimethylhexamethylenediamine 5~20 parts .

[0032] The preparation method of described microcapsule type self-repairing anticorrosion coating, comprises the following steps:

[0033] (1) Add urea-formaldehyde resin and butyl stearate in the seasoning kettle, add dibutyl phthalate and xylene under stirring, and stir at a high speed to make it disperse evenly;

[0034] (2) Add mercaptobenzothiazole, polyurethane microcapsules, polypropylene glycol and polyamide wax powder MT6650 under low-speed stirring, and disperse evenly;

[0035] (3) Add trimethylhexamethylenediamin...

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PUM

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Abstract

The invention discloses microcapsule type self-repairing anticorrosive paint and a preparation method thereof, wherein the paint is prepared from xylene, polyurethane microcapsules, urea resin, dibutyl phthalate, polypropylene glycol, polyamide wax powder MT6650, a corrosion inhibitor, a dispersing agent and a curing agent, and the preparation method is as follows: first, uniformly stirring and mixing various components in sequence, and then adding the curing agent for curing, so as to obtain the microcapsule type self-repairing anticorrosive paint. According to the microcapsule type self-repairing anticorrosive paint and the preparation method thereof, the polyurethane microcapsules are sealed in a film, if the film is broken and damaged, the corrosion inhibitor can play a role in corrosion inhibition and protection, meanwhile, the microcapsules crack and polyurethane in the microcapsules flows out and reacts with the water in the air under the action of an assistant to form a new film to realize the self-repairing function of the film, so as to protect a substrate from being broken and corroded.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to a microcapsule self-repairing anti-corrosion coating and a preparation method thereof. Background technique [0002] Anti-corrosion coatings are widely used in the protection of materials in corrosive environments. Traditionally, anti-corrosion coatings with the idea of ​​"preventing damage" are important varieties of industrial coatings, occupying a large proportion in industrial coatings, and creating huge economic and social benefits. However, during the use of the coating, it will be damaged or lose its anti-corrosion function due to the influence of the external environment. If it is not repaired in time, it will cause further corrosion damage to the base material, resulting in economic losses and dangers. [0003] In recent years, the self-healing anti-corrosion coatings based on the idea of ​​"damage management" inspired by the concept of smart coatings ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D161/24C09D175/04C09D5/08C09D7/12
CPCC09D161/24C08L2205/035C08L2205/18C09D5/08C09D7/63C09D7/70C08L75/04C08K5/00C08K5/12C08K5/47C08K5/29
Inventor 尤为
Owner WUXI EPIC TECH
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