WATER-BASED GLASS COATING MATERIAL RESISTANT TO BOILING IN BOILING WATER, AND PREPARATION METHOD THEREFOR

摘要

A water-based glass coating material resistant to boiling in boiling water, and a preparation method therefor, comprising: stirring and dispersing a water-soluble epoxy modified acrylic resin for the first time and then adding an amine neutralizer, carrying out stirring and dispersing again and then adding a cosolvent, and continuously carrying out stirring and dispersing and then adding a water-based defoaming agent; next, carrying out stirring and dispersing and then adding a water-based wetting agent, and continuously carrying out stirring and dispersing and then adding deionized water; carrying out stirring and dispersing for the last time and then adding a water-based amino resin, and uniformly stirring the mixture to obtain a component A; and mixing the component A, a component B, water, and a coloring agent to obtain the water-based glass coating material resistant to boiling in boiling water, wherein the component B is a silane coupling agent. The water-soluble resin can be better dissolved in water by virtue of the feeding order and process parameters, so that the use of the cosolvent is reduced, the additives are more uniformly and stably dispersed in a coating system, and the product quality is ensured. Color paste or color concentrate can be added into the obtained coating, and in either case, the coating has good color development performance and vividness; the coating is resistant to boiling in boiling water for 2 h after being dried and has no anomaly, and the problems that existing water-based glass coatings have no adhesion and are not resistant to boiling in boiling water after sky blue color concentrate is added are solved.