Ultraviolet light curable adhesive and methods of making, using and applying same

Abstract

This application relates to ultraviolet (UV) curable adhesives, their preparation methods, usage methods, and applications. The UV-curable adhesive comprises the following components by weight: 10-70 parts of a multifunctional polyurethane acrylate prepolymer, 30-90 parts of an acrylate reactive diluent, 1-10 parts of a photoinitiator, 0.1-10 parts of a thixotropic agent, 0.1-1 parts of a silane coupling agent, 0.1-1 parts of a defoamer, 0.1-1 parts of an antioxidant, and 0.05-1 parts of a polymerization inhibitor. The multifunctional polyurethane acrylate prepolymer includes a first prepolymer with a glass transition temperature (Tg) of 5°C-50°C, and the mass content of the first prepolymer in the multifunctional polyurethane acrylate prepolymer is 80%-100%. The acrylate reactive diluent includes acrylate soft monomers and acrylate hard monomers in a mass ratio of 0-0.5:1. This adhesive exhibits a fast curing speed and improved adhesion and high-temperature resistance.

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