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A kind of silicone adhesive and optical double-sided adhesive tape for tempered glass protective film using the adhesive

An organic silica gel, double-sided tape technology, applied in the direction of adhesive additives, adhesives, polymer adhesive additives, etc., can solve the problem of poor adsorption and air removal, water ripple or snowflake-shaped air bubbles, affecting the appearance of tempered glass, etc. problem, to achieve the effect of increasing flatness, improving leveling, improving appearance and use effect

Active Publication Date: 2018-09-28
NINGBO SOKEN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the existing tempered glass protective film is used, it is easy to have the problem of poor adsorption and degassing, and it is easy to produce water ripples or snowflake-like bubbles after lamination, which affects the appearance of the tempered glass.

Method used

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  • A kind of silicone adhesive and optical double-sided adhesive tape for tempered glass protective film using the adhesive
  • A kind of silicone adhesive and optical double-sided adhesive tape for tempered glass protective film using the adhesive
  • A kind of silicone adhesive and optical double-sided adhesive tape for tempered glass protective film using the adhesive

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation process of optical double-sided adhesive tape for tempered glass protective film is as follows:

[0029] The first step, the preparation of the silicone adhesive composition:

[0030] Take 100 parts of low-viscosity silicone adhesive (X-40-3229K, produced by Shin-Etsu, the same below) and 100 parts of organic solvent, stir for 20 minutes, add 0.15 parts of polydimethylsiloxane and 0.5 parts of platinum catalyst respectively (CAT-PL-50T, produced by Shin-Etsu Japan, the same below) and 0.05 parts of polyether-modified polydimethylsiloxane, and after adding one substance, stir for 3 minutes before adding another substance, and stir for 30 minutes. Obtained organic silica gel adhesive composition, organic solvent is the mixed solution that toluene and ethyl acetate 1:1 mix;

[0031] The second step, the preparation of the silicone adhesive layer:

[0032] The silicone adhesive composition prepared above was evenly coated on one side of the 50 μm optical P...

Embodiment 2

[0038] The preparation process of optical double-sided adhesive tape for tempered glass protective film is as follows:

[0039] The first step, the preparation of the silicone adhesive composition:

[0040] Mix 100 parts of low-viscosity silicone adhesive and 100 parts of organic solvent, stir for 30 minutes, add 0.1 part of polydimethylsiloxane, 0.2 part of platinum catalyst and 0.3 part of polyether-modified polydimethylsiloxane , and add another substance after stirring for 5 minutes after adding one substance, and stir for 50 minutes to obtain a silicone adhesive composition, the organic solvent is a mixed solution formed by mixing toluene and ethyl acetate at 1:1;

[0041] The second step, the preparation of the silicone adhesive layer:

[0042] The silicone adhesive composition prepared above was evenly coated on one side of the 50 μm optical PET substrate layer by CED spraying, and dried at a high temperature of 150°C to obtain a silicone adhesive layer, and pasted on ...

Embodiment 3

[0048] The preparation process of optical double-sided adhesive tape for tempered glass protective film is as follows:

[0049] The first step, the preparation of the silicone adhesive composition:

[0050] Mix 100 parts of low-viscosity silicone adhesive and 100 parts of organic solvent, stir for 30 minutes, add 0.7 parts of polydimethylsiloxane, 2 parts of platinum catalyst and 0.5 parts of polyether-modified polydimethylsiloxane , and add another substance after stirring for 4 minutes after adding one substance, and stir for 40 minutes to obtain a silicone adhesive composition, the organic solvent is a mixed solution formed by mixing toluene and ethyl acetate at 1:1;

[0051] The second step, the preparation of the silicone adhesive layer:

[0052] The silicone adhesive composition prepared above was evenly coated on one side of the 50 μm optical PET substrate layer by CED spraying, and dried at a high temperature of 150°C to obtain a silicone adhesive layer, and pasted on...

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Abstract

The invention relates to a silicone adhesive composition. The silicone adhesive composition comprises, by mass, 100 parts of a low-viscosity silicone adhesive, 0.1 to 1 part of polydimethylsiloxane, 0.2 to 2 parts of a platinum catalyst, 0.05 to 0.5 part of polyether modified polydimethylsiloxane and 50 to 100 parts of an organic solvent. The invention also relates to an optical double-sided tape employing the silicone adhesive composition and used for a toughened glass protection film, and a preparation method thereof. Compared with the prior art, the optical double-sided tape provided by the invention can effectively overcome difficulty is bubble elimination during applying, enables an applied surface not to generate water ripple bubbles and snowflake bubbles and greatly improves the integral appearance and usage effect of the toughened glass protection film.

Description

technical field [0001] The invention relates to the field of optical double-sided adhesive tape, in particular to an organic silica gel adhesive, an optical double-sided adhesive tape for tempered glass protective film using the adhesive and a preparation method thereof. Background technique [0002] As mobile phones continue to develop towards larger screens and thinner models, the protection requirements for mobile phone touch screens are becoming more and more stringent. Although the existing PET protective film can basically protect the touch screen from being scratched or polluted, when the mobile phone is damaged It is difficult to protect the touch screen from damage after a heavy impact or drop. [0003] Tempered glass is a kind of prestressed safety glass. In order to improve the strength of glass, chemical or physical methods are usually used to form compressive stress on the glass surface. Wind pressure, cold properties, impact, etc. The tempered glass protectiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/04C09J11/08C09J7/25C09J7/40
CPCC08L2205/025C08L2205/035C09J7/255C09J11/08C09J183/04C09J2301/1242C09J2301/408C09J2301/414C09J2433/00C08L83/04
Inventor 徐弘扬谢琼颖朱敏芳
Owner NINGBO SOKEN CHEM
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