Modified UV paint and preparation method thereof

Abstract

The invention relates to a modified UV paint and a preparation method thereof, and belongs to the field of coating. The modified UV paint comprises the following components in percentage by weight: 20-40% of an oligomer, 5-30% of thermoplastic polyurethane resin, 1-10% of a diluent monomer, 30-50% of a diluent, 0.1-5% of an additive and 0.5-5% of a light initiator. The invention further discloses a preparation method of UV paint and an application of the coating. The coating has good performance, is subjected to spray coating on the surface of an integral seamless product of metal and plastic or glass and plastic, is stripped off by an adhesive tape to achieve excellent decoration and performance protection of paint on the plastic position, is not left on glass or plastic and has a clear boundary with the metal and the plastic or with the glass and the plastic without generating a hand feeling.

Description

technical field [0001] The invention relates to a modified UV paint and a preparation method thereof, belonging to the field of paint. Background technique [0002] In the prior art, the integrated seamless appearance product of glass and plastic, metal and plastic has become a bright spot in the electronics industry and other industries, and is more and more widely used. However, in the integrated seamless appearance products of glass and plastic, or metal and plastic, since the surface of the plastic part does not have a dense and smooth appearance like glass or metal, it is often necessary to separately decorate the surface of the plastic deal with. In the prior art, the plastic surface is generally decorated by spraying UV paint. However, during the spraying process of UV paint, it is very easy to be sprayed on the glass or metal surface that does not need to be decorated at the seamless connection with the plastic, and because the UV paint is brittle, and some UV pain...

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned several processing methods, there are several problems as follows: the method of using a jig to protect the non-decorative surface may easily cause the boundary between the decorative surface and the non-decorative surface to be unclear, such as sawtooth, multi-spray, steps and other poor appearance, Seriously affect the appearance of integrated seamless technology

The method of protecting the non-decorative surface with a protective film is not suitable for the structure where the non-decorative surface is a curved surface. If the non-decorative surface is a flat surface, when the protective film is used to protect it, because the protective film has a certain thickness, spraying During the process, oil will accumulate on the edge of the protective film, resulting in a problem of obvious step feeling, which will affect the feel of the integrated seamless injection molding product

However, when the non-decorative surface is treated with low surface energy so that the paint cannot be wetted on the surface, the cost of the product will be greatly increased due to the relatively expensive price of low surface energy treatment.

[0005] Due to the existence of the above problems, the plastic surface treatment in the integrated seamless appearance of glass and plastic, metal and plastic has not been effectively solved.

And if a kind of method can be provided to improve the brittleness of UV paint, and make UV paint have no adhesion to glass or metal surface while not reducing UV paint to plastic surface adhesion, that can effectively solve the problem of glass and plastic, metal Plastic surface treatment problems in seamless appearance products integrated with plastic