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Low-modulus optical adhesive composition

An adhesive, low modulus technology, applied in the direction of adhesives, adhesive types, polyether adhesives, etc., can solve the problems of display module and panel contamination, increased energy required for curing, and reduced touch screen accuracy and accuracy. , to avoid warping and deformation, low viscosity, improve precision and accuracy

Active Publication Date: 2013-09-18
塔威新材料科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The plasticizer does not participate in the polymerization reaction in the curing reaction, but is dispersed and free in the middle of the cross-linked macromolecular colloid, and it is very easy to migrate, especially in the process of high-temperature and high-humidity aging. During the bonding process of the panel, it is easy to pollute the conductive glass film, display module and panel and adversely affect the electrical performance of the module, thereby reducing the accuracy and accuracy of the touch screen
In addition, with the introduction of plasticizers, not only will the UV curing reaction rate be slowed down, but also the energy required for curing will increase.

Method used

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  • Low-modulus optical adhesive composition
  • Low-modulus optical adhesive composition
  • Low-modulus optical adhesive composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take 30Kg multi-functional (meth)acrylate resin, 65Kg (meth)acrylate monomer diluent and 3Kg mercapto compound into the stirrer, stir for 30 minutes; then add 2Kg photoinitiator, stir under dark conditions The initiator is completely dissolved in 60-90 minutes to obtain the finished product A.

Embodiment 2

[0019] Take 56Kg multi-functionality (meth)acrylate resin, 40Kg (meth)acrylate monomer diluent and 3Kg mercapto compound into the stirrer, stir for 30 minutes; then add 1Kg photoinitiator, stir under dark conditions The initiator is completely dissolved in 60-90 minutes to obtain the finished product B.

Embodiment 3

[0021] Take 60Kg of multi-functional (meth)acrylate resin, 35Kg of (meth)acrylate monomer diluent and 4Kg of mercapto compound into the stirrer, stir for 30 minutes; then add 0.5Kg of photoinitiator and 0.5Kg of auxiliary agent, Stir for 60-90 minutes under the condition of avoiding light to completely dissolve the initiator, and obtain the finished product C.

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PUM

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Abstract

The invention discloses a low-modulus optical adhesive composition comprising the following components: 30-60 % of polyfunctional (meth) acrylate resin, 35-65 % of a (meth) acrylate monomer diluents, 3-12 % of a mercapto compound and 0.5-2 % of a photoinitiator. The low-modulus optical adhesive composition provided by the invention does not contain a plasticizer, and has characteristic of relatively low viscosity. By using the composition of the invention for bonding, electro-conductive glass membrane, display modules and panels are not polluted due to shift of the plasticizer, thereby improving precision and accuracy of touch screens. Furthermore, the composition of the invention does not rely on increasing a content of an active diluent to achieve the effect of low viscosity, thereby preventing generation of relatively large internal stress to cause warp and deformation at bonding positions.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a low-modulus optical adhesive composition. Background technique [0002] Optical adhesive is an adhesive used to assemble or bond two or more optical devices together. It is an essential key auxiliary material in the production process of touch screen (Touch Panel, TP), including optical tape (OCA ) and Liquid Optical Adhesive (LOCA), which are mainly used for bonding between conductive glass (film) and conductive glass (film), bonding between panels (Lens) and display modules (LCM) and Fit between TP. For lamination of plastic substrates, optical tape can be used, while for lamination of glass substrates, liquid optical glue is used to solve the inherent defects of tapes. Liquid optical adhesive has advantages that optical tape does not have in terms of production efficiency, production yield, and large-size screen lamination. [0003] With the increase in the application ...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J167/06C09J171/00C09J115/00C09J11/06
Inventor 柳成良林江滨范建军
Owner 塔威新材料科技(上海)有限公司
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