Described herein is a specific aqueous two-component coating composition including an epoxy resin-based paint base component (1), and a polyamine-based curing component (2), where the paint base component (1) includes at least one aqueous dispersion of at least one pigment (P) and/or filler (F) in at least one epoxy resin (E), where the at least one epoxy resin (E) has (i) a maximum sedimentation rate of not more than 17,500 micrometers per hour and a glass transition temperature of less than 0 C., or (ii) a maximum sedimentation rate of at least 12,500 micrometers per hour and a glass transition temperature of at least 0 C.

Methods and systems for painting surfaces (especially vehicle surfaces such as exterior aircraft surfaces) are provided whereby an applied basecoat layer may be treated with plasma (e.g., a non-thermal atmospheric pressure plasma) or laser radiation so as to form a treated basecoat layer which exhibits a decreased contact angle and an increased wetting energy as compared to the contact angle and wetting energy of the basecoat layer which is untreated. At least one inkjet printed color layer may be applied onto the treated basecoat layer followed by the application of a clearcoat protective layer over the one or more inkjet printed color layers.

A preparation method of a wear-resistant and scratch-resistant board, such as floorboard, including a substrate, a printed pattern layer and a UV wear-resistant layer from bottom to top sequentially. The method includes the steps of applying a printed pattern layer on a substrate, coating a first UV coating on the printed pattern layer, thereby obtaining a UV coating layer, then scattering a wear-resistant and scratch-resistant powder on the UV coating layer, and then performing film pressing treatment, so that the wear-resistant and scratch-resistant powder is pressed into the UV coating layer to form a UV wear-resistant layer. The film pressing treatment includes pressing a release film against the UV coating layer comprising the wear-resistant and scratch-resistant powder.

A multi-part water-borne coating composition is provided. The multi-part composition includes water, a first part, and a second part. The first part comprises (a1) a core-shell latex copolymer having pendant hydroxyl and pendant carbonyl groups. The second part comprises (b1) at least one polyisocyanate compound having pendant NCO groups. The multi-part composition also includes at least one polyhydrazide compound having at least two hydrazide groups of the formula C(O)NHN(R.sup.h)(R.sup.i), wherein R.sup.h and R.sup.i are independently H or C.sub.1-C.sub.12 alkyl. The molar ratio of hydroxyl groups to NCO groups in the composition is from 5:1 to 1:5. The molar ratio of hydrazide groups to carbonyl groups in the composition is from 5:1 to 1:5.

Coating systems, composite articles formed from the coating systems, and methods of forming the composite articles are provided herein. In an embodiment, a coating system comprises a waterborne underlying composition comprising an acrylic latex resin and a two-part waterborne clearcoat composition. The two-part waterborne clearcoat composition comprises a clearcoat binder part and a clearcoat crosslinker part. The clearcoat binder part comprises a water-dilutable, hydroxyl-functional (meth)acrylate copolymer. The clearcoat crosslinker part comprises a polyisocyanate compound having pendant NCO groups. A cured film of the waterborne clearcoat composition having a film thickness of 67.5 m overlying a cured film of the waterborne underlying composition having a film thickness of 20 m disposed on a substrate exhibits a popping density of less than about 3 pops per square centimeter, as measured by visual observation with the naked eye at a distance of 30 cm under a fluorescent light source.