Preparation method of low-temperature curing water-based glass baking paint

Abstract

The invention relates to a preparation method of a low-temperature curing water-based glass baking paint composed of acrylic resin, amino resin, hydroxyl resin, a pigment or a colorant, a wetting agent, an adhesive agent, an acid catalyst, a film-forming auxiliary agent, a defoaming agent, an anti-scratch flatting agent, a thickening agent, a bactericide, a pH regulator, a cosolvent and water. The prepared low-temperature curing water-based glass baking paint has the advantages of low VOC, no pollution to the environment, no poison and harm to operators, strong coating film adhesive force, good flexibility, high hardness, excellent wear resistance, excellent water resistance, excellent alcohol resistance, excellent salt fog resistance, simple construction, and stable storage; and a prepared paint film has the hardness reaching 2 H or more, has excellent anti-scratch wear-resisting properties, and is widely used for surface protection and decoration of wine bottles, perfume bottles, glass products, lamps, woodware, metals, plastics and other products.

Description

technical field [0001] The invention relates to a preparation method of water-based glass varnish, in particular to a water-based glass baking varnish suitable for low-temperature curing of various glass substrates. Background technique [0002] The coating protection and decoration of glass and glass products has a wide demand in industrial and civil fields. Water-based acrylic amino baking varnish has become an important industrial coating due to its advantages of high gloss, hardness, color and gloss retention, and heat resistance. It is widely used in wine Bottles, perfume bottles, lamps, home decoration glass products and glass instruments all need to be coated with protective and decorative coatings on the surface. [0003] In 2010, my country's VOC emissions were about 18 million tons, of which nearly 1 / 4 came from the paint coating industry. A large amount of VOC emissions from traditional solvent-based coatings have caused harm to the environment and human health t...

AI Technical Summary

Problems solved by technology

At present, the curing temperature of most water-based glass baking varnishes on the market is as high as 180-200°C, which does not meet the low-carbon economic development model based on low energy consumption, low pollution, and low emissions; in addition, the temperature resistance requirements for materials such as resins, colorants and pigments are increasing High, low selectivity and high cost, cannot meet the technological requirements of customers for modern glass products such as wine bottles, perfume bottles, glass crafts, etc.

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