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...

AI Technical Summary

Problems solved by technology

[0005] However, the microcapsules in the prior art have an effective antiseptic effect due to the difference in the loaded reagents, and the antiseptic coating or coating has a reduced active ingredient and a reduced antiseptic durability due to the difference in material ratio, and the preparation process is too complicated or simple. , cannot maintain a good anti-corrosion effect for a long time