Ultraviolet ray cured paint

Abstract

An ultraviolet ray-cured paint consists of active oligomer, active diluent, light polymerization initiator and diluent; and the active oligomer is maleic anhydride-modified epoxy acrylic ester with acid value of 10-30 mg KOH/g. It has also adhesion strengthening resin containing epoxy group. It has the components includes maleic anhydride-modified epoxy acrylic ester 30-60 wt%, active diluent 15-45 wt%, adhesion strengthening resin containing epoxy group 2-5 wt%, light polymerization initiator 1.0-10 wt%, and diluent 0-20 wt%. It has high adhesion between the film and the metal substrate, high heat resistance, proper cost/performance ratio and lightened environment and human body harm, and is especially suitable for use in antirust decorative of metal surface.

Description

technical field [0001] The invention relates to an ultraviolet light curing paint, which is especially suitable for antirust decoration of metal surfaces. Background technique [0002] Metal corrosion is ubiquitous in various fields, which not only causes economic losses, but sometimes even endangers personal safety. The anti-corrosion method of metal generally adopts the coating film that various coatings form to protect the metal surface at present. Although traditional solvent-based coatings are low in price and convenient in construction, they contain a large amount of volatile organic compounds (VOC for short), and a large amount of VOC is emitted during construction and drying, which is harmful to the atmosphere and human body. The light-curing coatings developed in recent years have greatly reduced the impact on the environment and personal safety due to their low VOC content. However, adhesion to metal substrates and heat resistance are not yet satisfactory. Someo...

AI Technical Summary

Problems solved by technology

However, the adhesion to metal substrates and heat resistance are not yet satisfactory

Someone once tried to use acrylic modified epoxy resin as an active oligomer and use special additives to improve the adhesion between the paint film and the metal substrate, but the heat resistance is still poor

Foreign countries have proposed to use a cationic initiator system to improve the adhesion of the metal substrate. However, due to the high price of the cationic photoinitiator and photocurable resin used, the cost of the coating is relatively high.