Organosilicon coil coating and preparation method thereof

Abstract

The invention relates to an organosilicon coil coating. The organosilicon coil coating is prepared by mixing aids, resins, titanium white, a diluter and a catalyst. The organosilicon-modified polyester resin, methyl ether amino resin and closed polyurethane resin are matched, thereby lowering the cost of the paint and effectively enhancing the flexibility of the paint film. The workability, hardness and weather resistance of the paint are enhanced. A proper amount of dinonylnaphthalene sulfonic acid-dinonyl naphthalene disulfonic acid mixed catalyst is selected, so that the paint film can be completely cured, and the paint film has rub resistance and moderate hardness. The dispersing agent, leveling agent and other aids, which are proportionally added in the formula, can effectively improve the constructability of the paint. The paint film has excellent adhesive force, scratch resistance and machinability.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a silicone coil coating. Background technique [0002] Pre-coated coils are economical and environmentally friendly, and are primarily used in the construction industry. In recent years, with the development of technology, its application has been extended to home appliances, decoration, furniture and other fields, requiring it to have durable aesthetic decoration and protection performance. Due to the high strength of Si—O bond (the bond energy of Si—O is about 460kJ / mol), silicone resin has excellent gloss and color retention. Coatings prepared by silicone-modified polyester resin, the coating film has excellent self-cleaning, gloss retention, color retention and chalking resistance, especially suitable for the preparation of durable coil topcoats. [0003] In recent years, with the development of the national economy, the amount of coil coatings has doubled. Conventional coil coating...