Method for preparing liquid silicone rubber for LCD screen protection film

A liquid silicone rubber, screen protector technology, applied in film/sheet adhesives, adhesives, adhesive additives, etc., can solve the problems of incompatibility, troublesome replacement, and the performance of double 85 resistance cannot meet the requirements. Improve the performance of double 85 resistance, simple production process and high production efficiency

Active Publication Date: 2015-04-01
浙江森日有机硅材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For manufacturers, the screen protective film is required to be dustproof, easy to remove, and leave no residual glue, which can greatly improve production efficiency and reduce the damage rate of the touch screen; for users, the general protective film glue is acrylic Ester glue can protect the screen to a certain extent, but when the life of the acrylic protective film expires, it is very troublesome to replace it, because the acrylic protective film is directly bonded to the touch screen, and the residual glue must be removed. If it is completely removed, it will cause great damage to the screen and greatly shorten the service life of the mobile phone
The transparency of ordinary silicone rubber is only about 81%, which is not suitable for screen protective film glue. Highly transparent silicone and PET substrates and double 85 resistance performance on the market cannot meet the requirements, and are not suitable for screen protective film glue.

Method used

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  • Method for preparing liquid silicone rubber for LCD screen protection film
  • Method for preparing liquid silicone rubber for LCD screen protection film
  • Method for preparing liquid silicone rubber for LCD screen protection film

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preparation example Construction

[0011] The embodiment of the present invention provides a preparation method of liquid silicone rubber for LCD screen protective film, which comprises the following steps:

[0012] S01: Mix vinyl silicone oil, methyl vinyl raw rubber and methyl vinyl MQ silicone resin with a mass ratio of (4-8):(1-5):(0.5-5) to obtain base rubber;

[0013] S02: Take 100 parts by mass of the base rubber, add 0.005 to 0.05 parts by mass of catalyst, and stir to obtain the mixed rubber I;

[0014] S03: Take 100 parts by mass of the base rubber, add 1-5 parts by mass of a crosslinking agent, 0.0001-0.01 parts by mass of an inhibitor, and 1-5 parts by mass of a tackifier, and stir to obtain Mixed Rubber II;

[0015] S04: mix rubber I, rubber II, and a solvent in a mass ratio of 1:(0.8-1.2):(1-5), apply it on a base material and cure it, and obtain the liquid silicone rubber for LCD screen protection film.

[0016] Specifically, in step S01, vinyl silicone oil, methyl vinyl raw rubber and methyl vi...

Embodiment 1

[0035] Take 100 parts of base rubber, wherein the content of methyl vinyl MQ silicone resin is 10%, add 0.01 part of catalyst, stir well, and use it as rubber mixture I; take another 100 parts of base rubber, wherein the content of methyl vinyl MQ silicone resin is 10% %, add 5 parts of cross-linking agent, add 0.0005 parts of inhibitor, add 2 parts of tackifier, stir evenly, and use it as rubber compound II; after mixing rubber compound I, compound rubber II and solvent at a mass ratio of 1:1:1 Apply to PET substrate and cure.

Embodiment 2

[0037] Take 100 parts of base rubber, wherein the content of methyl vinyl MQ silicone resin is 20%, add 0.01 part of catalyst, stir well, and use it as rubber mixture I; take another 100 parts of base rubber, wherein the content of methyl vinyl MQ silicone resin is 20% %, add 5 parts of cross-linking agent, add 0.0005 parts of inhibitor, add 2 parts of tackifier, stir evenly, and use it as rubber compound II; after mixing rubber compound I, compound rubber II and solvent at a mass ratio of 1:1:1 Apply to PET substrate and cure.

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Abstract

The invention relates to a method for preparing liquid silicone rubber for an LCD screen protection film. The method comprises the following steps: mixing vinyl silicone oil, methyl vinyl raw rubber and methyl vinyl MQ silicon resin at the mass ratio of (4-8) to (1-5) to (0.5-5), so as to obtain base rubber; taking 100 parts by mass of base rubber, adding 0.005-0.05 part by mass of a catalyst, and stirring to obtain mixed rubber I; taking 100 parts by mass of base rubber, adding 1-5 parts by mass of a cross-linking agent, 0.0001-0.01 part by mass of an inhibitor and 1-5 parts by mass of a tackifier, and stirring to obtain mixed rubber II; mixing the mixed rubber I, the mixed rubber II and a solvent at the mass ratio of 1 to (0.8-1.2) to (1-5); and coating the base material, and solidifying, so as to obtain the liquid silicone rubber for the LCD screen protection film. According to the liquid silicone rubber for the LCD screen protection film, obtained through the method by selecting proper raw materials and preparation conditions, the dual 85 resistance can reach over 1440 hours; no gumming is achieved; the glass is not cohered; the adhesion with the PET base material can reach the effect of cohesive failure; the transparency can be up to 97%; the overall preparation process is simple; and the production efficiency is high.

Description

technical field [0001] The invention belongs to the field of new polymer materials, and in particular relates to a preparation method of liquid silicone rubber for an LCD screen protective film. Background technique [0002] At present, with the wide application of touch screens, the overall cost of screens is very high for electronic products containing touch screens. protection is also getting more and more attention. For manufacturers, the screen protective film is required to be dustproof, easy to remove, and leave no residual glue, which can greatly improve production efficiency and reduce the damage rate of the touch screen; for users, the general protective film glue is acrylic Ester glue can protect the screen to a certain extent, but when the life of the acrylic protective film expires, it is very troublesome to replace it, because the acrylic protective film is directly bonded to the touch screen, and the residual glue must be removed. If it is completely removed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J11/06C09J11/08C09J7/02C09J7/20
CPCC09J11/06C09J11/08C09J7/20
Inventor 李彦民杨志昂
Owner 浙江森日有机硅材料有限公司
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