Nano-organic-silica anti-corrosion coating

Abstract

The invention provides a nano-organic-silica anti-corrosion coating which comprises, by weight, 35-50 parts of water-soluble epoxy resin, 35-45 parts of alkyd resin, 6-12 parts of modified nano-zinc oxide and graphene oxide composite powder, 10-16 parts of nano-silica, 5-10 parts of diatom ooze, 4-8 parts of hydroxymethyl cellulose, 12-18 parts of tetraethoxysilane, 10-16 parts of zinc phosphate,2-6 parts of coalescing agents, 0.1-0.5 part of dispersing agents, 2-6 parts of isopropanol, 0.1-0.5 part of defoaming agents and 35-45 parts of water. The modified nano-zinc oxide and graphene oxidecomposite powder is mainly prepared from nano-zinc oxide, sodium dodecyl sulfate, graphene oxide, itaconic acid and silane coupling agents. The nano-organic-silica anti-corrosion coating is good in anti-corrosion performance and has excellent wear resistance.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a nanometer organic silicon anticorrosion coating. Background technique [0002] Anti-corrosion coatings have become an important new force in the field of coatings. Anti-corrosion coatings are playing an increasingly important role, and their development prospects are promising. According to the analysis of industry experts: the price of anti-corrosion coatings is rising obviously, which is related to marine coatings and marine development. In recent years, the country has been increasing investment in seven-tenths of the earth's oceans, among which anti-corrosion coatings are a prominent point in this area. Since 2007, anti-corrosion coatings have played an increasingly important role in the construction of the national economy. The market for anti-corrosion coatings for articles has shown a gratifying situation, and its production scale has continued t...

AI Technical Summary

Problems solved by technology

However, due to the use of siloxane-modified acrylic resin as the base material, it is prone to yellowing at high temperatures and can only be made into silver black. At the same time, the coating is anti-corrosion by adding up to 35% aluminum powder to achieve high-temperature melting and secondary film formation. Because a large amount of aluminum powder will soften and melt at high temperature, the coating has no thermal hardness, and the wear resistance is extremely poor at high temperature. At the same time, special ultrasonic vibration is used for coating. Compared with the conventional process, it is extremely inconvenient for customers to use.

And the paint also uses some toxic trimethylbenzene as solvent, which is not environmentally friendly

CN100587017C discloses a solvent-based organosilicon ultra-high-temperature resistant coating and its production method, which can withstand high temperatures of 450-500 degrees, but the pyrolysis of organic resins will still produce some pungent and toxic odors, and will change color

Can only do very few colors of black and silver black, can not do light and bright colors

The above organic or inorganic high-temperature-resistant coatings have poor high-temperature and anti-corrosion effects and poor wear-resisting effects when thinly applied.

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