Radiation curing coating, preparation process thereof and product containing coating

Abstract

The invention discloses a preparation process of a radiation curing coating, which comprises the following steps: a radiation curing closed primer, radiation curing putty, a radiation curing solid color primer, a radiation curing sanding primer and a radiation curing finishing coat are sequentially coated on the surface of a base material, and the base material comprises a wood fiber density board, namely an MDF (medium density fiberboard), a multi-layer or single-layer wood board and the like; wherein the radiation curing putty is a selectable coating, and if the base material is a medium-density board or a high-density board, coating of the radiation curing putty can be omitted selectively. The coating disclosed by the invention can replace a melamine impregnated paper veneer process of a density board and a multilayer board in the market, avoids the use of an impregnated veneer which takes formaldehyde as an adhesive in public places and home decoration materials, simplifies a construction process, has good physical and chemical properties such as adhesive force, high hardness, chemical resistance and the like, has excellent color design capability, and can be applied to the field of decoration and decoration. Meanwhile, the method is environment-friendly and cost-saving. All coatings can be subjected to radiation curing, so that assembly line type production of coating is realized, and the production efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a radiation-cured coating, a preparation process thereof, and a product containing the coating. Background technique [0002] MDF, the full name of density fiberboard, is a board made of wood fiber or other plant fiber as raw material, prepared from fiber, applied with synthetic resin, and pressed under the condition of heating and pressure. The multi-layer board is generally made of the inner layer pattern first, and then the single-sided or double-sided substrate is made by printing and etching method, and is incorporated into the designated interlayer, and then heated, pressurized and bonded. MDF and multi-layer boards generally need to go through the coating process. At present, the commonly used MDF and multi-layer board coating processes on the market mainly include the following two: [0003] (1) Paste a layer of hot-pressed paper film (commonly used paper ty...

AI Technical Summary

Problems solved by technology

The patent application number is CN201711040560.X for curing powder coatings for MDF and its preparation method. After the powder coatings are sprayed on the substrate, they need to be heated at high temperature for a period of time to complete the curing. The overall construction process is difficult to achieve large-scale assembly line production

[0005] At present, there is almost no precedent in the market to directly roll-coat UV-curable coatings on MDF and multi-layer board substrates. This is due to the poor flatness of MDF and multi-layer boards. Only one coat of paint can achieve good coverage and good flatness. However, after multiple coats and thick coats of paint, it is difficult for the coating to be fully cured under conventional light sources, or it needs to be cured multiple times and needs to be cured in multiple ways. And the strength cannot be guaranteed, and the cost has also increased sharply