Delayed curing UV adhesive and preparation method thereof

Abstract

The invention discloses a delayed curing UV adhesive for bonding transparent media such as glass and glass, glass and aluminum sheets and non-transparent media such as aluminum sheets and aluminum sheets and aluminum sheets and plastic and a preparation method of the delayed curing UV adhesive, and relates to the technical field of glue preparation. The UV adhesive comprises the following main components: a prepolymer accounting for 40-65% of the weight of the UV adhesive, epoxy resin accounting for 20-40% of the weight of the UV adhesive, an active monomer accounting for 15-25% of the weight of the UV adhesive, an auxiliary agent accounting for 1-3% of the weight of the UV adhesive, a silane coupling agent accounting for 0.5-2.0% of the weight of the UV adhesive, an antioxidant accounting for 0.5-2.0% of the weight of the UV adhesive, a photoinitiator A accounting for 0.5-2% of the weight of the UV adhesive, and a photoinitiator B accounting for 0.5-5% of the weight of the UV adhesive. The delayed curing optical UV adhesive is very suitable for adhesion of non-transparent media, and the characteristic that the existing commercially available UV adhesive can only adhere to an adherend and at least one surface of the adherend is a transparent medium is changed.

Description

technical field [0001] The present invention relates to the technical field of glue preparation, more specifically, it relates to transparent media such as glass and glass, glass and aluminum flakes, and non-transparent media such as aluminum flakes and aluminum flakes, aluminum flakes and plastics, etc. Optical UV glue and its preparation method. Background technique [0002] Ultraviolet light curing adhesive technology, also known as UV glue technology, has developed rapidly in the past ten years due to its high efficiency, energy saving, environmental protection, convenient operation and many other advantages, and its application fields have gradually expanded. At present, it has covered electronics, microelectronics, Aerospace, automotive, industrial and civil and many other fields. [0003] When UV glue is cured, free radicals are generated due to the need for light penetration, which then initiates polymerization. Therefore, its application often requires at least one...

AI Technical Summary

Problems solved by technology

[0004] However, in some optical devices, the application scenarios are more complicated. For example, the transparent substrate of the adhered device cannot be fully exposed, or it is required to be in a certain light protection scene, so it cannot be exposed to ultraviolet light for a long time, otherwise it will affect the optical product. Other properties; or some optical devices can only be used for positioning in the early stage of the production process, so as to facilitate the subsequent production of other processes, otherwise the rework will be very difficult or cause the product to be scrapped, or even the bonded part is completely opaque materials, etc.

For the above application scenarios with difficult process requirements, the existing UV adhesive technology can hardly solve these difficulties and pain points because it can be completely cured by one irradiation and requires at least one side of transparent material.

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