Solvent type high-corrosion-resistance primer base for household appliance, preparation method and application thereof

Abstract

The invention discloses a solvent type high-corrosion-resistance primer base for a household appliance, a preparation method and an application thereof. The coating comprises the following components: 20-30% of polyester resin, 5-10% of a curing agent, 0.1-0.5% of a catalyst, 0.5-2% of an adhesion promoter, 0.5-1% of a wetting dispersant, 12-18% of titanium dioxide, 7-12% of anticorrosive filler, 0.3-0.5% of an antifoaming agent, 0.3-1% of a flatting agent and 30-45% of a solvent, and mixing the above components to obtain the primer base. The primer base provided by the invention has the following advantages of good flexibility, good water resistance, excellent neutral salt spray resistance property, and excellent processability to meet the processing requirements of different household appliances, on the basis of the existing domestic technology, the corrosion resistance property of the household appliance is improved by about 3 times, and the service life of the household appliance is greatly prolonged.

Description

technical field [0001] The invention belongs to the field of home appliance industrial coatings, and in particular relates to a solvent-based high-corrosion home appliance primer coating and a preparation method and application thereof. Background technique [0002] Household appliances are durable consumer goods with various types and colors. Most of the customers we face come from household consumers. Therefore, the appearance requirements of home appliances are very strict, and there are almost no defects. However, most of the base materials used for home appliance panels are cold-rolled sheets and hot-dip galvanized steel sheets, which are easily corroded when exposed to air for a long time, resulting in rust spots, damaging the appearance of the product, and in severe cases, paint film peeling off. According to the survey report, the annual corrosion loss of steel products in my country is about 500 billion yuan, accounting for about 6% of the gross domestic product. E...

AI Technical Summary

Problems solved by technology

At present, the neutral salt spray resistance performance (GB / T 1771-1991) of household appliance primers on the market is about 200-300 hours. Or coastal areas or high-end export products, the anti-corrosion effect is still not ideal

At present, there is still a blank in the market for high anti-corrosion home appliance coatings.