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A kind of liquid organosilicon optical glue and its preparation method and application

A technology of silicone and optical adhesives, applied in bonding methods, adhesives, non-polymer adhesive additives, etc., can solve the problems of low interface adhesion, low cohesive strength, and low aging resistance of optical adhesives. The effect of improving interfacial adhesion and mechanical properties, enhancing cohesive strength and mechanical properties, and excellent cohesive strength

Active Publication Date: 2022-06-24
广东派乐玛新材料技术有限公司
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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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  • A kind of liquid organosilicon optical glue and its preparation method and application
  • A kind of liquid organosilicon optical glue and its preparation method and application
  • A kind of liquid organosilicon optical glue and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0120] The present embodiment provides a liquid silicone optical adhesive, including component A and component B with a mass ratio of 1:1; the specific components are as follows:

[0121] Component A includes in parts by weight: vinyl silicone oil (structure is Viscosity is 300mPa s) 60 parts, vinyl MQ silicone resin (viscosity is 20000mPa s) 30 parts, adjustment aids 10 parts (hydroxy silicone oil, the structure is The viscosity is 20000mPa·s), and the catalyst (the compound liquid of chloroplatinic acid vinyl silicone oil 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 The viscosity was 500 mPa·s) 9.9 parts, and the inhibitor (et...

Embodiment 2

[0127] The present embodiment provides a liquid silicone optical adhesive, including component A and component B with a mass ratio of 1:1; the specific components are as follows:

[0128] Component A includes in parts by weight: vinyl silicone oil (structure is Viscosity of 10000mPa s) 50 parts, vinyl MDT silicone resin (viscosity of 300mPa s) 30 parts, adjustment aids 20 parts (methyl silicone oil, the structure is The viscosity is 8000 mPa·s), and the catalyst (the compound liquid of chloroplatinic acid vinyl silicone oil with a platinum content of 5%) is 10 ppm.

[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, macromolecular modified silane coupling agent B2 10 parts, other additives (structure of x:y=3:1, viscosity 20000mPa·s) 10 parts, inhibitor (1,1,3-triphenyl-2-propyn-1-ol) 80ppm.

[0130] The preparation method and use...

Embodiment 3

[0132] The present embodiment provides a liquid silicone optical adhesive, including component A and component B with a mass ratio of 1:1; the specific components are as follows:

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

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

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Abstract

The invention provides a liquid organic silicon optical adhesive and its preparation method and application. The liquid organic silicon optical adhesive includes A component and B component, the A component includes vinyl polysiloxane, and the B component The components include hydrogen-containing polysiloxane and macromolecular modified silane coupling agent; the macromolecular modified silane coupling agent is selected from acrylate modified silane coupling agent, vinyl siloxane modified silane coupling agent Any one or a combination of at least two of coupling agents, epoxycyclohexyl modified silane coupling agents or hyperbranched silane coupling agents. Through the screening and compounding of components, especially the introduction of macromolecular modified silane coupling agent, the liquid organic silicon optical adhesive can form stronger physical and chemical interactions inside the polymer matrix without affecting the bonding effect. And under the premise of the repair effect, the interface adhesion and mechanical properties of the adhesive film are significantly improved, and the problem of anti-foaming or glue opening of the large-size fully-fitted products under low air pressure is overcome.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a liquid organosilicon optical adhesive and a preparation method and application thereof. Background technique [0002] Large-size display screens are mainly used for outdoor advertising, indoor education screens, conference screens, etc. The enhancement of screen touch and interaction is the biggest feature of this type of screen; among them, the outdoor screen has better durability of the screen and comprehensive performance of the bonding material. 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 the display screen is used has become more and more complex; in addition to common factors such as high temperature, high humidity, low temperature and ultraviolet rays, display The normal use of screens in high-altitude areas or low-pressure environ...

Claims

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Application Information

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Patent Type & Authority Patents(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 广东派乐玛新材料技术有限公司
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