Environment-friendly corrosion-resistant and wear-resistant coating for ship waterline area and preparation method of environment-friendly corrosion-resistant and wear-resistant coating

Abstract

The invention discloses an environment-friendly corrosion-resistant and wear-resistant coating for a ship waterline area and a preparation method of the environment-friendly corrosion-resistant and wear-resistant coating. The environment-friendly corrosion-resistant and wear-resistant coating for the ship waterline area comprises a component A and a component B which are in the mass ratio of 1:1,wherein the component A contains the following components in parts by mass: 50-60 parts of epoxy curing agent, 0.2-0.5 part of defoaming agent, 70-90 parts of deionized water, 2-4 parts of rheologicalagent, 20-30 parts of titanium dioxide, 20-30 parts of antifriction agent and 40-50 parts of modified zinc-rich shell powder; and the component B contains the following component in parts by mass: 200-240 parts of epoxy resin. The environment-friendly corrosion-resistant and wear-resistant coating is used as a primer for the waterline area, is capable of effectively avoiding electrochemical corrosion under the environments of seawater scouring, solarization radiation and dry and wet alternation, omitting an aluminum hot-spraying process, simplifying a process and reducing the cost and has theservice life of more than 10 years if being used for the ship waterline area.

Description

technical field [0001] The invention relates to an environmentally friendly anti-corrosion and wear-resistant coating for the waterline area of ​​a ship and a preparation method thereof. Background technique [0002] At present, oceans account for about 71% of the earth's surface, and the navigation industry and ocean development have become an indispensable pillar for the economic development of many countries around the world. The marine environment is a very harsh and corrosive environment. During the process of sailing in the ocean, the waterline area is subjected to seawater erosion and sunlight ultraviolet radiation, and is in an oxygen-rich environment with alternating dry and wet conditions. At the same time, there are marine debris and pollutants. Therefore, the most serious corrosion in the waterline area can not only reduce the strength of the steel structure of the ship, shorten the life of the ship, but also increase the navigation resistance, reduce the speed o...

AI Technical Summary

Problems solved by technology

The marine environment is a very harsh and corrosive environment. During the process of sailing in the ocean, the waterline area is subjected to seawater erosion and sunlight ultraviolet radiation, and is in an oxygen-rich environment with alternating dry and wet conditions. At the same time, there are marine debris and pollutants. Therefore, the most serious corrosion in the waterline area can not only reduce the strength of the steel structure of the ship, shorten the life of the ship, but also increase the navigation resistance, reduce the speed of the ship, and affect the performance of the ship and navigation safety. The performance of the waterline area on the anti-corrosion coating more demanding

At present, there are mainly four types of primers used in the waterline area: (1) epoxy resin coatings, which require high process costs to thermally spray aluminum protective layers on the hull; (2) epoxy chromate phosphate coatings, chromate Phosphate is used as a preservative, containing toxic substances such as lead or chromate, and there is a danger of polluting the environment in the process of preparation and use, which is not compatible with the requirements of the sustainable development strategy of society and economy; (3) Modification of glass flakes Resin coatings have good physical isolation performance but the implementation process is relatively difficult; (4) chlorinated rubber modified epoxy coatings have low solid content and are easily eroded by solvents

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