UV-moisture dual-cure liquid optical adhesive and its preparation method and application

Abstract

The invention discloses UV-moisture dual-curing liquid optical cement. The UV-moisture dual-curing liquid optical cement is prepared from, by weight, 45-80 parts of UV moisture curing matrix resin, 10-50 parts of tackifying resin, 10-35 parts of reactive diluents, 0.3-5 parts of photoinitiator and 1-5 parts of additive. The matrix resin and the tackifying resin have unique molecular structures. The invention further provides a preparation method of the UV-moisture dual-curing liquid optical cement. The preparation method comprises the following steps that the matrix resin and the tackfying resin are prepared; then all the materials are placed in a planetary vacuum mixer and are stirred and mixed to be uniform, and the finished product is obtained through filtering and defoaming. The problem of cement overflow that common liquid optical cement cannot overcome and the problem that the common liquid optical cement is not suitable for the special lamination process of UV precuring, lamination and moisture curing for cement overflow prevention are solved, a cement film formed by the UV-moisture dual-curing liquid optical cement after primary UV curing has moderate bonding strength and a good locating effect, the bonding strength is greatly improved after moisture curing, the surface of the cement film is very smooth, a certain edge shape is kept, no edge collapse phenomenon occurs, and the UV-moisture dual-curing liquid optical cement is suitable for automatic equipment coating.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a UV-moisture dual-curing liquid optical adhesive and a preparation method and application thereof. Background technique [0002] With the development of the times and the advancement of science and technology, digital electronic products have become an indispensable and important product in people's lives; and most of these products have become necessary tools for people's daily life and work; such as mobile phones, tablets, Notebook etc. With the trend of the market, consumers have higher and higher requirements for the performance and quality of these products. Among them, the touch display screen, as an important medium of human-computer interaction, is the key to the popularity of electronic products such as mobile phones and tablets. one of the elements. [0003] In the lamination process of the liquid crystal touch screen, the lamination of the touch screen (TP) and th...

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Problems solved by technology

[0005] It can be seen that the combination of liquid optical glue and dam glue or protective tape to prevent glue overflow will complicate the sizing and bonding process, increase the amount of glue used, prolong the construction time, and is not suitable for automatic coating equipment Sizing increases the cost and wastes manpower and material resources

At present, there is no liquid optical adhesive that can be applied to the automatic full lamination process and can be completely glue-free

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