Ultraviolet ray-curable low-gloss flow-coating paint and preparation method thereof

Abstract

The invention discloses an ultraviolet ray-curable low-gloss flow-coating paint and a preparation method thereof. The ultraviolet ray-curable low-gloss flow-coating paint comprises the following components in part by weight: 5-20 parts of modified bisphenol A epoxy acrylate, 5-15 parts of polyester acrylate, 5-15 parts of three-functional active monomer, 30-40 parts of two-functional active monomer, 5-15 parts of monofunctional active monomer, 5-15 parts of organic matting powder, 2-10 parts of MINEX-7, 3-10 parts of ultraviolet ray initiator and 0.1-1 part of additive. The preparation method comprises the following steps of: adding components except the organic matting powder and the MINEX-7 into a high-speed dispersion kettle according to the parts by weight; after uniformly stirring, adding the organic matting powder and the MINEX-7, and continuously dispersing uniformly; vacuumizing, and deforming; and painting a surface in a flow-coating way; and after detection, technical indexes of the painted surface are good and the gloss is below 30 degrees.

Description

Technical field [0001] The invention belongs to the field of coatings, and relates to a UV-curable low-gloss paint and a preparation method thereof, in particular to a UV-curable low-gloss curtain coating topcoat and a preparation method thereof. Background technique [0002] Ultraviolet curing coating is an environmentally friendly coating developed in recent years. Under the action of ultraviolet light, the photosensitive material in the UV-curable coating can generate active particles or groups through photochemical reaction, thereby initiating the cross-linking polymerization of the active resin in the system to obtain a hardened paint film. [0003] The coating methods of UV-curable coatings are different according to the application methods. They are divided into roller coating, curtain coating and spray coating. Roll coating is to roll the coating directly on the substrate with a coating roller, which is the same as paper printing; curtain coating is dedicated The equipment...

AI Technical Summary

Problems solved by technology

[0006] However, the addition of matting powder reduces the gloss and at the same time, in the flow coating, based on the high oil absorption characteristics of the traditional gas-phase SiO2 matting powder, it will cause the coating to produce a jelly-like phenomenon and cause fluidity problems. Therefore, the current UV-cured coating The surface coating can only achieve a gloss of more than 50°. If the amount of traditional matting powder is increased, even if it is lower than 50°, it will cause a jelly-like fluidity problem due to the oil absorption of the matting powder, making the construction impossible. , can not meet people's requirements for low-gloss coating in the flow coating process

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