High-temperature, high-humidity and high-salt mist-resistant polyurethane coating and preparation method thereof

Abstract

The invention relates to the chemical technical field and discloses a high-temperature, high-humidity and high-salt mist-resistant polyurethane coating and a preparation method thereof, so as to solve the technical problem that in the prior art, the steel structure is relatively poor in preservative effect. The polyurethane coating is prepared from 1 part by weight of a main coating and 0.08-0.15 part by weight of a curing agent; the main coating is prepared from the following components in parts by weight: 0.25-0.35 part of fluorine-modified acrylic resin, 0.25-0.35 part of hydroxy acrylic resin, 0.001-0.002 part of a polyurethane curing accelerator, 0.01-0.02 part of nanosilicon dioxide, 0.01-0.02 part of a hindered amine stabilizer, 0.002-0.008 part of a modified polysilane defoaming agent, 0.2-0.3 part of titanium dioxide, 0.15-0.20 part of talcum powder and 0.05-0.10 part of dimethylbenzene; the curing agent is prepared from the following components in parts by weight: 0.3-0.4 part of isophorone diisocyanate, 0.4-0.5 part of hexamethylene diisocyanate, 0.05-0.15 part of isobutyl acetate and 0.05-0.15 part of methoxy propyl acetate. Furthermore, the preservative effect of the steel structure is improved.

Description

technical field [0001] The invention relates to the field of chemical technology, in particular to a high-temperature, high-humidity, high-salt fog-resistant polyurethane coating and a manufacturing method. Background technique [0002] At present, there are more and more steel structures serving in the harsh marine atmospheric environment of high temperature, high humidity, high salt spray and strong ultraviolet rays. The steel structures in this harsh marine atmospheric environment often have coating peeling off in a short period of time, causing The phenomenon of steel structure corrosion will affect the safety and life of the steel structure. Therefore, there is a technical problem in the prior art that the anticorrosion effect of the steel structure is relatively poor. Contents of the invention [0003] The invention provides a high-temperature, high-humidity, high-salt spray polyurethane coating and a manufacturing method to solve the technical problem of poor antic...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a high temperature, high humidity, high salt spray polyurethane coating and its manufacturing method to solve the technical problem of poor anticorrosion effect of steel structures in the prior art

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