Preparation and properties of a water-based baking paint for wheel hubs
[Introduction]A water-based baking paint was prepared to improve the corrosion resistance of wheel hub.[Method]Water-based acrylic emulsion and amino resin were selected as the film forming materials.The effects of the types and amounts of water-based acrylic emulsion and amino resin,and water-based aluminum-silver paste and baking temperature on the comprehensive properties and appearance of the coating were discussed.[Result]The coating prepared with acrylic emulsion 3711 and amino resin CYMEL 303 at a mass ratio of 8:1 had the optimal properties:pencil hardness 3H,0-grade adhesion,failure height more than 95 cm for a 1-kg impact,and neutral salt spray resistance 336 hours.[Conclusion]The home-made paint has good appearance and comprehensive properties,and is suitable for the decoration and protection of wheel hub in combination with epoxy primer and finishing varnish.
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