Liquid organic silicon optical adhesive as well as preparation method and application thereof

A silicone and optical adhesive technology, applied in the direction of bonding methods, adhesives, adhesive additives, etc., can solve the problems of low interface adhesion, low cohesive strength, and low aging resistance of optical adhesives, and achieve improved interface adhesion And mechanical properties, overcoming low pressure anti-foaming or glue opening, strong chemical bonding effect

Active Publication Date: 2021-01-29
DONGGUAN POWERBOND NEW MATERIALS TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The optical glue has the characteristics of high transparency, good adhesion, and resistance to cold and heat shocks, but its aging resistance is low, and its performance in harsh environments such as high temperature, high humidity, and low pressure cannot meet the display requirements of the display screen
[0006] Although some organic silicon optical adhesives have been disclosed in the prior art, the optical adhesives used for large-scale full lamination still have the problem of low interface adhesion
In order to take into account the problem of rework, the cohesive strength of optical adhesives is usually low during application. In the high temperature and low pressure environment, the volume expansion of the residual air inside the adhesive film will cause bubbles of different shapes to appear in the fully laminated product, which will affect the display. effect and appearance
[0007] Therefore, it is the focus of research in this field to develop an optical glue with high interface adhesion and mechanical properties to overcome the problems of high temperature and low pressure anti-foaming or glue opening of large-scale laminated products

Method used

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  • Liquid organic silicon optical adhesive as well as preparation method and application thereof
  • Liquid organic silicon optical adhesive as well as preparation method and application thereof
  • Liquid organic silicon optical adhesive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0120] This example provides a liquid silicone optical glue, including component A and component B with a mass ratio of 1:1; the specific components are as follows:

[0121] A component includes by weight: vinyl silicone oil (structure is Viscosity is 300mPa s) 60 parts, vinyl MQ silicone resin (viscosity is 20000mPa s) 30 parts, adjusting aid 10 parts (hydroxyl silicone oil, structure is The viscosity is 20000mPa·s), and the catalyst (the chloroplatinic acid vinyl silicone oil compound solution with a platinum content of 5%) is 15ppm.

[0122] Component B includes by weight: hydrogen-containing silicone oil (structure is Viscosity is 500mPa s) 60 parts, hydrogen-containing MQ silicone resin (viscosity is 500mPa s) 25 parts, macromolecule modified silane coupling agent B1 (infrared spectrum as shown in figure 1 Shown) 5 parts, other additives (methyl silicone oil, the structure is Viscosity is 500mPa·s) 9.9 parts, inhibitor (ethynyl cyclohexanol) 100ppm.

[0123] The p...

Embodiment 2

[0127] This example provides a liquid silicone optical glue, including component A and component B with a mass ratio of 1:1; the specific components are as follows:

[0128] A component includes by weight: vinyl silicone oil (structure is Viscosity is 10000mPa s) 50 parts, vinyl MDT silicone resin (viscosity is 300mPa s) 30 parts, adjusting aid 20 parts (methyl silicone oil, the structure is Viscosity is 8000mPa·s), catalyst (platinum chloroplatinic acid vinyl silicone oil compound solution with 5% platinum content) 10ppm.

[0129] Component B includes by weight: hydrogen-containing silicone oil (structure is Viscosity is 300mPa s) 50 parts, hydrogen-containing MDT silicone resin (viscosity is 300mPa s) 30 parts, macromolecule modified silane coupling agent B2 10 parts, other additives (structure is x:y=3:1, viscosity is 20000mPa·s) 10 parts, inhibitor (1,1,3-triphenyl-2-propyn-1-ol) 80ppm.

[0130] The preparation method and method of use are the same as in Example 1. ...

Embodiment 3

[0132] This example provides a liquid silicone optical glue, including component A and component B with a mass ratio of 1:1; the specific components are as follows:

[0133] A component includes by weight: vinyl silicone oil (structure is x:y=7:3, 55 parts of viscosity is 50000mPa·s), 30 parts of vinyl MQ silicone resin (viscosity of 20000mPa·s), 15 parts of adjustment aid (methyl silicone oil, the structure is Viscosity is 10000mPa·s), catalyst (platinum chloroplatinic acid vinyl silicone oil compound solution with 5% platinum content) 10ppm.

[0134] Component B includes by weight: hydrogen-containing silicone oil (structure is 55 parts of viscosity is 8000mPa·s), 30 parts of hydrogen-containing MQ silicone resin (viscosity of 5000mPa·s), 5 parts of macromolecule modified silane coupling agent (composition of B2 and B3 with a mass ratio of 3:2), Other additives (structure is x:y=3:1, viscosity is 30000mPa·s) 10 parts, inhibitor (ethynyl cyclohexanol) 80ppm.

[0135] ...

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Abstract

The invention provides a liquid organic silicon optical adhesive and a preparation method and application thereof, the liquid organic silicon optical adhesive comprises a component A and a component B, the component A comprises vinyl polysiloxane, and the component B comprises hydrogen-containing polysiloxane and a macromolecular modified silane coupling agent, wherein the macromolecular modifiedsilane coupling agent is selected from any one or a combination of at least two of an acrylate modified silane coupling agent, a vinyl siloxane modified silane coupling agent, an epoxy cyclohexyl modified silane coupling agent or a hyperbranched silane coupling agent. According to the liquid organic silicon optical adhesive, through screening and compounding of components, especially introductionof the macromolecular modified silane coupling agent, stronger physical and chemical interaction is formed in a polymer matrix, and the interface adhesion and mechanical properties of an adhesive filmare remarkably improved on the premise of not influencing a bonding effect and a repairing effect; and the problem of bubble reversion or glue failure of a large-size full-lamination laminated product under low air pressure is solved.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a liquid organic silicon optical adhesive and its preparation method and application. Background technique [0002] Large-size display screens are mainly used for outdoor advertising, indoor education screens, conference screens, etc. Enhanced screen touch and interaction are the biggest features of this type of screen; among them, outdoor screens have better durability for screens and comprehensive performance of bonding materials. high demands. In recent years, with the promotion of full lamination technology for large-size display screens, the market has further expanded, and the environment where display screens are used has become more and more complex; in addition to common factors such as high temperature, high humidity, low temperature, and ultraviolet rays, the display The normal use of screens in high-altitude areas or low-pressure environments in the avi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J183/05C09J11/06C09J11/08C09J5/00
CPCC09J183/04C09J11/06C09J11/08C09J5/00C08L2205/025C08L2205/035C08L83/04C08L83/06C08L43/04C08L83/16
Inventor 洪亮黎松罗元福李德红刘兆辉
Owner DONGGUAN POWERBOND NEW MATERIALS TECH DEV
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