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 an ultraviolet-curable low-gloss paint and a preparation method thereof, in particular to an ultraviolet-curable low-gloss curtain coating top coat and a preparation method thereof. Background technique [0002] UV-curable coating is an environmentally friendly coating developed in recent years. Under the action of ultraviolet light, the photosensitive substances in the system of UV-curable coatings can generate active particles or groups through photochemical reactions, thereby initiating the cross-linking and polymerization of the active resins in the system to obtain a hardened paint film. [0003] The coating method of UV-curable coatings is divided into roller coating, shower coating and spray coating according to different application methods. Roller coating is to roll the coating directly on the substrate with a coating roller, just like paper printing; The equipment that can form t...

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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