Boiling-water-boiling-resistant water-based glass coating and preparation method thereof

Abstract

The invention discloses a boiling-water-boiling-resistant water-based glass coating and a preparation method thereof. The preparation method comprises the following steps: adding an amine neutralizerafter water-soluble epoxy modified acrylic resin is stirred and dispersed for the first time; stirring and dispersing again, then adding a cosolvent, continuously stirring and dispersing, then addinga water-based defoaming agent, then stirring and dispersing, then adding a water-based wetting agent, continuously stirring and dispersing, then adding deionized water, finally stirring and dispersing, then adding water-based amino resin, and uniformly stirring to obtain a component A; combining the component A with a component B to obtain boiling-water-boiling-resistant water-based glass coating;mixing the boiling-water-resistant water-based glass coating with water to obtain a boiling-water-resistant water-based glass coating material, or mixing the boiling-water-resistant water-based glasscoating with water and a coloring agent to obtain a boiling-water-resistant water-based glass coating material; and then coating glass with the coating material, and drying to obtain the boiling-water-boiling-resistant water-based glass coating. Color paste or color concentrate can be added into the water-based glass coating so that the water-based glass coating has good color development performance and vividness, the coating is resistant to boiling water boiling for 2 h without abnormity after the coating is dried, and particularly the problems that existing water-based glass coating on themarket has no adhesion and is not resistant to boiling water boiling after sky blue color concentrate is added are solved.

Description

technical field [0001] The invention belongs to coating technology, and in particular relates to a boiling-resistant water-based glass coating and a preparation method thereof. Background technique [0002] Glass coatings are widely used in cosmetic glass bottles, wine bottles, gift decoration bottles, etc. in daily life to play the role of beautiful decoration, covering the defects of the glass itself or protecting the glass from being scratched; The surface coating of glass products is in direct contact. With the improvement of people's awareness of environmental protection, health and safety, the requirements for the surface coating of glass products are becoming increasingly stringent. At present, according to incomplete statistics of the market, 70-80% of glass coatings are water-based coatings, of which 80-90% are water-soluble glass coatings, and the rest are water-based dispersion glass coatings. The ratio of water-based dispersion glass coatings during construction ...

AI Technical Summary

Problems solved by technology

In the present invention, it is a conventional technology to coat the boiling water-resistant water-based glass coating material on the glass, and the existing coating coating method can be used, such as the method of spraying, but the present invention solves the problem that the prior art is difficult to use in practical applications. Spraying application on a large area leads to too low production capacity and cannot meet the market demand. The varnish or color paint prepared by the coating disclosed in the present invention can be sprayed on a large area, and in actual spraying application, VOC≤200g / L, which meets the requirements of the national environmental protection paint. Standard, and the combination of different co-solvents is reasonable. After drying, the coating has no orange peel, high gloss, and bright colors. It only needs to be dried at 150°C for 20 minutes to cure the coating, especially when soaked in boiling water at 100°C for boiling test. After 2 hours, the paint film will not fall off or wrinkle and swell, and the 100-grid test meets the requirements of 5B

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