Vacuum electroplating UV photo-curing primer and preparation method thereof

Abstract

The invention relates to the technical field of vacuum electroplating, in particular to a vacuum electroplating UV photocuring prime coat and a preparation method thereof. The vacuum electroplating UVphoto-curing prime coat is prepared from the following components by weight percentage: 10-20 parts of epoxy acrylic resin, 10-15 parts of polyester acrylate and 10-15 parts of polyurethane acrylic resin; 0.3 to 0.5 part of an adhesion promoter; 15 to 25 parts of an active monomer diluent; 3-5 parts of a photoinitiator; and 30 to 40 parts of a cosolvent; and the adhesion promoter is vinyl trimethoxy silane. In the present application, an adhesion promoter is added into the vacuum electroplating UV photocuring prime coat; vinyl trimethoxy silane is subjected to a double bond addition reactionin the presence of a photoinitiator, and is copolymerized or grafted into a prepolymer, alkoxy and silica bonds are introduced, and the alkoxy increases the crosslinking point of the prepolymer duringcrosslinking and curing, so that the crosslinking density is improved, and the effect of improving the adhesive force of a cured coating is achieved.

Description

technical field [0001] The present application relates to the technical field of vacuum electroplating, in particular to a vacuum electroplating UV photocuring primer and a preparation method thereof. Background technique [0002] At present, in the cosmetics industry, in order to increase the diversification of product appearance and make the product more beautiful and decent, the surface of the cosmetic packaging box is often coated with paint for decoration, which improves the reflectivity and wear resistance of the product and plays a good role in protection. role. [0003] Ultraviolet (UV) vacuum plating is a physical deposition phenomenon, that is, in an ultra-low pressure container, the migration of the electric field is used to make the UV coating migrate to the surface of the coated part. ) under the action of curing to form a uniform and smooth surface layer. [0004] UV coatings are usually materials containing polar functional groups or polar components, but co...

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Problems solved by technology

[0004] UV coatings are usually materials containing polar functional groups or polar components, but cosmetic packaging boxes are mostly made of plastic or plastic materials. For plastics with low surface energy and low polarity, the coating is not easy to combine with the plastic substrate, resulting in coating Poor adhesion of the primer, which reduces the coating quality of the primer to the plastic substrate

[0005] For the above-mentioned related technologies, the inventor believes that there is a defect of poor adhesion of the coating