UV anaerobic double curing coating

Abstract

The invention relates to ultraviolet anaerobic dual-cured paint, containing an anaerobic curing agent combination. The paint consists of oxide initiator accounting for 30 to 60 percent, catalysts accounting for 10 to 35 percent and reduced matter accounting for 5 to 40 percent. The percentages of the components in the gross weight of the paint are as follows: acrylic ester active oligomer accounts for 30 to 60 percent; in active diluent, a compound with one olefinic unsaturated double bond, a compound with two olefinic unsaturated double bonds and a compound with three olefinic unsaturated double bonds respectively account for 5 to 30 percent, 0 to 20 percent and 5 to 20 percent; solvent accounts for 0 to 30 percent; photoinitiator accounts for 1-10 percent; additive accounts for 0 to 1 percent; and the anaerobic curing agent combination accounts for 0.1 to 5 percent. A paint film formed by the paint is level in exterior appearance, obviously increased in adhesive force, flexibility, hardness and boiling water resistance, and has no residual odor. The paint is especially applicable to the protection of wood, density boards, paper and other porous base materials.

Description

technical field [0001] The invention relates to an ultraviolet anaerobic dual curing coating, which is especially suitable for porous substrates such as wood, density board, and paper. Background technique [0002] Due to the advantages of rapid drying, high hardness and short production cycle, UV-curable coatings are currently being used in more and more fields. However, conventional UV-curable coatings also have their inherent defects: only the coating film that can be directly irradiated by ultraviolet light can undergo a relatively complete cross-linking reaction, so that the coating film is completely cured, thereby obtaining excellent coating film properties. However, for some objects with uneven surfaces, dead angles or yin and yang surfaces, when the coating film of the applied UV-curable coating is irradiated with ultraviolet light, some of the coating film cannot be irradiated by ultraviolet light, resulting in affect the performance of the final coating film. Fo...

AI Technical Summary

Problems solved by technology

However, for porous substrates such as wood, MDF, paper, etc., during the coating process of UV-curable coatings, some coating components, especially low-molecular reactive diluents, will penetrate into the pores of porous substrates, while UV Light cannot penetrate the substrate to reach these coating components, so they cannot cure

When the dual-curing UV-curable coating with an external curing agent is used on a porous substrate, due to the different materials of the porous substrate, the composition and quantity of the coating that penetrates into the porous substrate cannot be controlled. The quantity is also difficult to determine, so it is impossible to guarantee that the coating components that penetrate into the porous substrate are completely cured, and these incompletely cured coating components, especially low-molecular reactive diluents, will continue to be released during later use, thus becoming New sources of pollution that are harmful to humans and the environment