Polyurethane anticorrosive wearable coating and preparation method thereof

Abstract

The invention discloses a polyurethane anticorrosive wearable coating and a preparation method thereof, and relates to the technical field of anticorrosive coatings. The polyurethane anticorrosive wearable coating is prepared from, by weight, 34-43 parts of poly-adipic acid-gylcol ester-glycol, 80-100 parts of polyether N210, 17-24 parts of polyether N330, 60-80 parts of isophorone diisocyanate, 0.5-2 parts of triethylene diamine, 5-10 parts of 2-methyl-1,3-propylene glycol, 1-2 parts of trimethylolpropane, 4-10 parts of modified organosilicon, 4-7 parts of fumed silica, 10-17 parts of kaolin,25-35 parts of titanium dioxide, 0.5-2 parts of ethyl cellulose, 3-7 parts of propylene glycol, 0.2-1 part of aluminium hydroxide, 0.5-2 parts of 3(2-chlorin isopropyl) organic phosphate, 1-3 parts of dicyclohexyl phthalate, 0.5-2 parts of defoaming agent, 0.5-2 parts of anti-aging agent and 4-8 parts of coalescing agent. The polyurethane anticorrosive wearable coating and the preparation methodthereof have the advantages that the acid, alkali and salt-spray corrosion resistant performance is excellent, the wear resistance and antibacterial property are good, the adhesive force to the base material is high, the impact resistance and glossiness are good, and the mechanical property is better.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to a polyurethane anti-corrosion and wear-resistant coating and a preparation method thereof. Background technique [0002] According to statistics, the annual economic loss caused by corrosion in the world is about 1 trillion US dollars, which is the sum of the losses caused by earthquakes, fires, and wind disasters. Coating anti-corrosion and wear-resistant coatings is the most effective, most economical, and most widely used anti-corrosion method. Widely concerned at home and abroad, anti-corrosion and wear-resistant coatings can play an anti-corrosion effect on metals under general conditions and prolong the service life of non-ferrous metals. The anti-corrosion function lies in the shielding effect of the coating, resistance effect, wet adhesion, chemical passivation Chemical and cathodic protection, although a variety of anti-corrosion and wear-resistant coatin...

AI Technical Summary

Problems solved by technology

[0002] According to statistics, the annual economic loss caused by corrosion in the world is about 1 trillion US dollars, which is the sum of the losses caused by earthquakes, fires, and wind disasters. Coating anti-corrosion and wear-resistant coatings is the most effective, most economical, and most widely used anti-corrosion method. Widely concerned at home and abroad, anti-corrosion and wear-resistant coatings can play an anti-corrosion effect on metals under general conditions and prolong the service life of non-ferrous metals. The anti-corrosion function lies in the shielding effect of the coating, resistance effect, wet adhesion, chemical passivation Chemical and cathodic protection, although a variety of anti-corrosion and wear-resistant coatings have been developed at home and abroad, they still cannot meet the needs

In addition, in some fields, the surface and interior of metal pipes are required to have a certain antibacterial effect. In the existing coatings, antibacterial and antifungal agents are generally added directly to the polymer system, and the antibacterial effect is achieved through the exudation of the antibacterial and antifungal agents. Unstable antibacterial properties limit the application fields of anti-corrosion coatings