Self-crosslinked water-based acrylic air-drying paint and preparation method thereof

Abstract

The invention relates to a self-crosslinked water-based acrylic air-drying paint which comprises the following raw materials in percentage by mass: 10-20% of methyl methacrylate, 5-15% of butyl methacrylate, 1-3% of hydroxyethyl methacrylate, 3-8% of methacrylic acid, 1-3% of diacetone acrylamide, 10-20% of alcohol, 1-2% of initiator, 2-5% of neutralizer, 40-50% of pure water and 0.5-1% of assistant. The paint film formed by the paint has the advantages of favorable closeness, favorable oxidation resistance, favorable hand perspiration resistance and favorable salt spray resistance. The preparation method of the paint comprises the following steps: weighing the raw materials; mixing the methyl methacrylate, butyl methacrylate, hydroxyethyl methacrylate, methacrylic acid, diacetone acrylamide and 75-85% of initiator to obtain a mixed solution; adding the alcohol into a reaction kettle, introducing nitrogen and heating; adding the mixed solution into the reaction kettle, adding the rest of initiator into the reaction kettle, removing the solvent, and cooling; adding the neutralizer into the reaction kettle; and adding the pure water into the reaction kettle, and adding the assistant into the reaction kettle to obtain the finished product. The method has the advantages of simple technique and high production efficiency.

Description

technical field [0001] The invention relates to the technical field of chemical products, in particular to a self-crosslinking water-based acrylic self-drying paint and a preparation method thereof. Background technique [0002] Acrylic self-drying paint is a material that can be naturally air-dried to form a film after being applied to the surface of an object. It is mainly used for surface sealing of hardware electroplating products and can provide protection for the electroplating layer. [0003] Most of the existing acrylic self-drying paints are oily acrylic self-drying paints. These oily acrylic self-drying paints have a high content of volatile organic compounds (VOC), which are easy to pollute the environment and cause damage to human health. [0004] In response to the above situation, some water-based acrylic self-drying coatings have appeared on the market. However, the paint film formed by these water-based acrylic self-drying coatings on the surface of hardware ...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing acrylic self-drying paints are oily acrylic self-drying paints. These oily acrylic self-drying paints contain high volatile organic compounds (VOC), which are easy to pollute the environment and cause damage to human health.

[0004] In response to the above situation, some water-based acrylic self-drying coatings have appeared on the market. However, the paint film formed by these water-based acrylic self-drying coatings on the surface of hardware electroplating products has poor sealability, low brightness and low hardness, and cannot provide good protection for the electroplating layer. , poor oxidation resistance, poor hand sweat resistance, poor salt spray resistance, short service life

In addition, the water-based acrylic self-drying paint cannot meet the needs of electrostatic spraying construction, and its application range is narrow; its viscosity is high, its water dilutability is poor, and it is not easy to adjust the construction

Images