Self-repairing waterborne marine anticorrosive paint and preparation method thereof

Abstract

The invention relates to a self-repairing waterborne marine anticorrosive paint, which comprises the following raw materials (by weight): 50-70 parts of anticorrosive resin, 10-30 parts of microcapsules, 5-10 parts of a diluent, and 1-10 parts of a thickening agent. The microcapsules are prepared from a capsule material and a core material. The capsule material is polymer porous microspheres, and the core material is a self-repairing underwater adhesive. The particle size of the microspheres is 5-20 microns. The thickening agent is a combination of one or more components selected from carboxymethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, tritolyl phosphate and dibutyl phthalate, and of one or two components selected from modified bentonite and modified attapulgite. The waterborne marine anticorrosive paint can achieve rapid self-recognition and self-repairing of corrosion in a marine environment.

Description

technical field

[0001] The invention belongs to the field of marine corrosion protection, and in particular relates to a water-based marine anti-corrosion paint with self-repairing performance and a preparation method thereof. Background technique

[0002] The marine environment is a very harsh corrosive environment. Almost all parts of marine vessels and marine engineering facilities need to be protected against corrosion. my country has a vast ocean, long coastline, rich resources, and numerous ports. The development and utilization of marine resources are getting deeper and deeper. The marine anti-corrosion problems are gradually increasing, and effective anti-corrosion protection plays an increasingly important role in the development of the marine economy. Marine and coastal facilities have been in the harsh marine environment for a long time and have high requirements for supporting protective materials. Traditional anti-corrosion coatings and thermal spraying aluminum...

Examples

Embodiment 1

[0025] A water-based marine anti-corrosion paint with self-repairing performance comprises the following raw materials in parts by weight: 70 parts of epoxy resin, 30 parts of microcapsules, 5 parts of butyl acetate, and 8 parts of thickener, wherein the microcapsules are composed of capsule material and core The capsule material is a porous microsphere of polymer material, the core material is a water adhesive with self-repair function, the particle size of the microcapsule is 15 microns, and the thickener is dibutyl phthalate and modified Sexual attapulgite.

[0026] The preparation method is:

[0027] 1) Preparation of microcapsules of porous microspheres of polymer materials loaded with adhesive in water by phase separation method;

[0028] 2) Mix the microcapsules and epoxy resin, and continuously stir at 800-1200 rpm for 30-45 minutes; heat up to 60°C at a heating rate of 3°C / min, reflux for 0.5 hours, cool down to 50°C, and keep warm for 1 -3 hours;

[0029] 3) Add b...

Embodiment 2

[0032] A water-based marine anti-corrosion paint with self-repairing performance comprises the following raw materials in parts by weight: 60 parts of acrylic resin, 25 parts of microcapsules, 8 parts of ethyl acetate, and 5 parts of thickener, wherein the microcapsules are composed of capsule material and core material The capsule material is porous microsphere of polymer material, the core material is water adhesive with self-healing function, the particle diameter of the microcapsule is 10 microns, and the thickener is carboxymethyl cellulose and modified bentonite.

[0033] A preparation method for processing the above-mentioned water-based marine anticorrosion paint, comprising the following steps:

[0034] 1) Preparation of microcapsules of porous microspheres of polymer materials loaded with adhesive in water by phase separation method;

[0035] 2) Mix the microcapsules and acrylic resin, and keep stirring at 800-1200 rpm for 30-45 minutes; heat up to 60°C at a heating ...

technical field

[0001] The invention belongs to the field of marine corrosion protection, and in particular relates to a water-based marine anti-corrosion paint with self-repairing performance and a preparation method thereof. Background technique

[0002] The marine environment is a very harsh corrosive environment. Almost all parts of marine vessels and marine engineering facilities need to be protected against corrosion. my country has a vast ocean, long coastline, rich resources, and numerous ports. The development and utilization of marine resources are getting deeper and deeper. The marine anti-corrosion problems are gradually increasing, and effective anti-corrosion protection plays an increasingly important role in the development of the marine economy. Marine and coastal facilities have been in the harsh marine environment for a long time and have high requirements for supporting protective materials. Traditional anti-corrosion coatings and thermal spraying aluminum...

Examples

Embodiment 1

[0025] A water-based marine anti-corrosion paint with self-repairing performance comprises the following raw materials in parts by weight: 70 parts of epoxy resin, 30 parts of microcapsules, 5 parts of butyl acetate, and 8 parts of thickener, wherein the microcapsules are composed of capsule material and core The capsule material is a porous microsphere of polymer material, the core material is a water adhesive with self-repair function, the particle size of the microcapsule is 15 microns, and the thickener is dibutyl phthalate and modified Sexual attapulgite.

[0026] The preparation method is:

[0027] 1) Preparation of microcapsules of porous microspheres of polymer materials loaded with adhesive in water by phase separation method;

[0028] 2) Mix the microcapsules and epoxy resin, and continuously stir at 800-1200 rpm for 30-45 minutes; heat up to 60°C at a heating rate of 3°C / min, reflux for 0.5 hours, cool down to 50°C, and keep warm for 1 -3 hours;

[0029] 3) Add b...

Embodiment 2

[0032] A water-based marine anti-corrosion paint with self-repairing performance comprises the following raw materials in parts by weight: 60 parts of acrylic resin, 25 parts of microcapsules, 8 parts of ethyl acetate, and 5 parts of thickener, wherein the microcapsules are composed of capsule material and core material The capsule material is porous microsphere of polymer material, the core material is water adhesive with self-healing function, the particle diameter of the microcapsule is 10 microns, and the thickener is carboxymethyl cellulose and modified bentonite.

[0033] A preparation method for processing the above-mentioned water-based marine anticorrosion paint, comprising the following steps:

[0034] 1) Preparation of microcapsules of porous microspheres of polymer materials loaded with adhesive in water by phase separation method;

[0035] 2) Mix the microcapsules and acrylic resin, and keep stirring at 800-1200 rpm for 30-45 minutes; heat up to 60°C at a heating ...