Photocurable adhesive

Abstract

The invention relates to a general photocurable adhesive and a preparation method. The photocurable adhesive comprises the following components: 25-35% of aliphatic polyester polyurethane diacrylate, 10-20% of tetrahydrofuran polyurethane acrylate, 10-20% of acryloylmorpholine, 6-16% of methyl methacrylate, 1-5% of (ethoxyethoxy)ethyl acrylate, 5-10% of polyvinyl butyral, 1-5% of 2-hydroxyl-2-methyl-1-phenyl-1-propyl ketone, 1-5% of 1-hydroxycyclohexyl phenyl ketone, 0.5-2% of 2,4,6-trimethylbenzoyl phosphine oxide and 1-2% of phosphatide methacrylate. The invention is proved to reach a good bonding strength by various substrate bonding tests, eliminates influence of the substrate variability within a certain range, is convenient to use and easy to prepare and reduces possible product quality fluctuation caused by tiny material error.

Description

technical field [0001] The invention relates to an ultraviolet light to visible light curing adhesive, in particular to a general-purpose adhesive suitable for various organic and inorganic materials. Background technique [0002] As a new generation of adhesives, light-curing adhesives have the advantages of simple construction, rapid curing, energy saving, and basically no volatile organic compounds (VOC), which reduces air pollution and human hazards. Photocuring can also avoid possible damage to various heat-sensitive substrates (such as plastics, paper or other electronic components) caused by the high temperature during thermal curing, and has become the only choice to meet high standards in some fields. With the increasing attention to the ecological environment, the advantages of light-curing adhesives have become more prominent. [0003] However, due to the large differences in the surface properties of most substrates, especially plastics, the existing UV-curable ...

AI Technical Summary

Problems solved by technology

[0003] However, due to the large differences in the surface properties of most substrates, especially plastics, the existing UV-curable adhesives have a limited scope of application. For example, for polyacrylate and polyester, the same glue is often difficult to achieve similar effects; organic material polymerization and copolymerization Due to the difference of mixed modification, it often appears that one kind of glue has completely different effects on the same kind of materials from different manufacturers.

The variability of materials has become a problem in the field of light-curable adhesives. At the same time, high light requirements have also become an obstacle to the promotion of this type of adhesive.

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