Photosensitive developed special line transfer glue for sapphire glass base material and preparation method thereof

Abstract

The invention discloses photosensitive developed special line transfer glue for a sapphire glass base material and a preparation method thereof. The photosensitive developed special line transfer glueis prepared from an acrylic ester active monomer, a photoinitiator, an acrylic acid phosphate assistant, a silane coupling agent, polyester acrylate, and urethane acrylate. The transfer glue does notcontain an organic solvent, and is environmentally friendly. A transfer technology is used as the foundation, and the advantages of a photosensitive developing technology are organically fused, the advantages are adopted and the defects are avoided. Especially, a product of the transfer glue not only can use the organic solvent for developing, but also can use pure water for developing, and is environmentally friendly, non-inflammable and non-explosible, and is a future tendency. The transfer glue has the excellent properties of solvent corrosion resistance, cold and thermal shock resistanceand the like after curing, and an adhesive force of a glue layer and the sapphire glass base material is excellent, especially, the adhesive force of the glue layer and the sapphire glass base material is greater than or equal to 4B after a water boiling test. The transfer glue is capable of solving problems of current UV glue that the adhesive force on the sapphire glass base material is poor, the water boiling is not resistant, and the solvent is not resistant.

Description

technical field [0001] The invention relates to the technical field of photocuring transfer adhesives, in particular to photosensitive and developable special texture transfer adhesives for sapphire glass substrates and a preparation method thereof. Background technique [0002] Sapphire is a general term for corundum gemstones of other colors except ruby, the main component of which is aluminum oxide (Al 2 o 3 ). At present, professional laboratories around the world can easily and cheaply produce gem-quality sapphire, which has the same chemical composition and physical properties as natural sapphire. Sapphire glass (SAPPHIRE CRYSTAL) generally refers to synthetic sapphire, which is not only very different from natural sapphire, which is commonly understood as jewelry, but also very different from glass. Sapphire glass has a composition similar to corundum and has a hardness of 9. Various colors can be produced by adding various chemical elements, but the colorless one ...

AI Technical Summary

Problems solved by technology

[0009] Sapphire glass is used on touch screens or cameras of mobile phones. Due to the special structure and performance of sapphire glass itself, as a base material, the existing UV glue is applied to inorganic materials such as sapphire glass, which has outstanding poor adhesion and is not resistant to boiling water. The problem

In order to solve the problem of poor adhesion on the sapphire glass substrate, some UV glue products add organic solvents, and then remove the solvent through the baking process, which greatly endangers the environment.

The technical problems of traditional UV adhesives on sapphire glass substrates are as follows: ①Poor adhesion on sapphire glass substrates

② Poor boiling resistance on sapphire glass substrate

③Most UV glue systems contain organic solvents, which are harmful to the environment

④Unable to meet the special texture requirements of sapphire glass substrates, only full-width curing can be performed, not partial curing, and will not use other processes and transfer processes to organically combine

Due to the above reasons, there is still a blank in the market for UV glue for sapphire glass substrates.

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