Water-based paste paint for rail wagons, and preparation method thereof

Abstract

The invention discloses a water-based paste paint for rail wagons, and a preparation method thereof. The water-based paste paint comprises, by weight, 30-40 parts of a water-based modified resin, 0.1-0.3 part of a neutralizer, 0.8-1 part of a dispersant, 0.5-0.8 part of a defoaming agent, 1.5-2.5 parts of a pigment, 15-25 parts of an antirust pigment, 5-8 parts of wet sericite powder, 10-13 partsof talcum powder, 1.0-2.0 parts of an anti-settling agent, 0.3-0.5 part of a wetting agent, 1-1.5 parts of an organic antirust agent, 0.3-0.8 part of an anti-flash rust agent, 0.6-1.0 part of a rheological agent and 20-30 parts of deionized water. The prepared product has the advantages of high drying speed, good initial-stage water resistance, excellent mechanical properties and excellent salt spray resistance, makes the thickness of a dry film formed by coating the surface of a wagon body or an accessory with the paste paint at a time reach 100-120 [mu]m, and can meet the requirements for the fast-paced production efficiency of a wagon coating production line.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based high-build paint for railway wagons, and at the same time, the invention also relates to a preparation method of the coating. Background technique [0002] From 2018 to 2020, the Railway Corporation plans to purchase 216,000 railway wagons, and the railway wagons ushered in an unprecedented opportunity. The number of railway wagons in my country has reached 890,000 in 2018, and about 30,000 tons of coatings are needed in the new construction and maintenance of wagons every year. At present, most of the coatings used in the coating of railway wagons are still solvent-based coatings with high content of volatile organic compounds (VOCs). During the production and use of coatings, these VOCs are emitted into the air and participate in the photochemical reaction of the atmosphere. belt has caused serious pollution. With the increasingly stringent national environment...

AI Technical Summary

Problems solved by technology

At present, most of the coatings used in the coating of railway wagons are still solvent-based coatings with high content of volatile organic compounds (VOCs). During the production and use of coatings, these VOCs are emitted into the air and participate in the photochemical reaction of the atmosphere. caused serious pollution

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