Waterborne undercoat-topcoat integrated paint applied to type-25 passenger trains

Abstract

The invention provides a waterborne undercoat-topcoat integrated paint applied to type-25 passenger trains. The paint comprises a component A and a component B; the component A is prepared from waterborne hydroxy acrylic resin emulsion, waterborne organic silicon modified epoxy resin emulsion, waterborne chlorinated polypropylene emulsion, rutile titanium dioxide, phthalocyanine green, phthalocyanine blue, medium chrome yellow, carbon black, nano barium sulfate, surface treatment silicon powder, waterborne zinc phosphate, a waterborne dispersing agent, a waterborne foam inhibitor, a waterborne defoaming agent, a waterborne leveling agent, a surfactant, a neutralizing agent, a waterborne ultraviolet absorbing agent, waterborne polyamide wax slurry, a mould-proof bactericide, deionized water and a solubilizer; the component B is a hydrophilic isocyanate curing agent. The waterborne undercoat-topcoat integrated paint is high in drying speed, hardness and sagging resistance and excellent in chemical resistance, weatherability can reach 2000h or above, butanone resistance reaches 1000 times or above, and salt spray resistance reaches 2000h or above.

Description

technical field [0001] The invention relates to the field of paint making, in particular to a water-based bottom-surface-in-one paint applied to Type 25 passenger cars. Background technique [0002] As the country's environmental protection requirements become more and more stringent, relevant policies have been introduced successively, which has greatly promoted the market for water-based paints. However, people are still willing to use traditional oil-based systems in their minds because many performance water-based paints are still Inferior to oil-based paint. [0003] In 2015, the Railway Corporation promulgated the "Technical Conditions for Coatings for Type 25 Passenger Cars (Trial)" standard, which is applied to the bottom-surface-integrated coating on the surface of the bogie. The requirements of this standard focus on the salt spray resistance of the paint film. It is required to reach 720 hours without blistering and rusting on the board surface, and the rust widt...

AI Technical Summary

Problems solved by technology

[0002] As the country's environmental protection requirements become more and more stringent, relevant policies have been introduced successively, which has greatly promoted the market for water-based paints. However, people are still willing to use traditional oil-based systems in their minds because many performance water-based paints are still inferior to oil paint

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