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Organosilicon pressure-sensitive adhesive for fingerprint-resistant glass as well as preparation method and application of organosilicon pressure-sensitive adhesive

A silicone pressure-sensitive adhesive and anti-fingerprint technology, used in pressure-sensitive films/sheets, adhesives, adhesive additives, etc. It can improve the stability of temperature resistance and peel force, improve the exhaust performance, and improve the cohesive strength.

Pending Publication Date: 2022-01-21
WANHUA CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current glass touch screen requires surface treatment, especially the anti-fingerprint coating to make the screen more stain-resistant and smoother, which makes the water drop angle of the screen larger and lower, and the surface energy is lower and lower. The traditional protective film is not only difficult It is sticky, and there is still the problem of air bubbles that are difficult to get rid of when bonding the anti-fingerprint glass screen

Method used

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  • Organosilicon pressure-sensitive adhesive for fingerprint-resistant glass as well as preparation method and application of organosilicon pressure-sensitive adhesive
  • Organosilicon pressure-sensitive adhesive for fingerprint-resistant glass as well as preparation method and application of organosilicon pressure-sensitive adhesive
  • Organosilicon pressure-sensitive adhesive for fingerprint-resistant glass as well as preparation method and application of organosilicon pressure-sensitive adhesive

Examples

Experimental program
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Effect test

preparation example Construction

[0030] The preparation method of branched vinyl silicone oil comprises the hydrolytic condensation of phenyltrimethoxysilane and methylphenyldimethoxysilane, under the catalysis of acid, phenyltrimethoxysilane and methylphenyldimethoxysilane The hydrolysis reaction of base silane, and further dehydration condensation to obtain hydroxyl-terminated T-type polysiloxane chain segment, when the number of chain segments reaches a certain amount, vinyl double-capped head is added for end-capping reaction, and finally separated and purified to obtain T-shaped polysiloxane segment Branched vinyl silicone oil.

[0031] In the preparation process of the above-mentioned branched vinyl silicone oil, the catalyst of the acid is selected from any one of concentrated sulfuric acid, acetic acid, propionic acid, benzoic acid, phenylacetic acid, trifluorobenzenesulfonic acid, acid diatomaceous earth, etc., preferably For concentrated sulfuric acid.

[0032] The preparation steps of branched vin...

Embodiment 1

[0078] 1) Add 20g of branched vinyl silicone oil, 10g of vinyl MQ silicone resin, 20g of hydroxyl raw rubber, 60g of hydroxyl MQ silicone resin, 80g of xylene, and 0.8g of ethynyl cyclohexanol into the reactor, stir and dissolve; wherein, hydroxyl raw The molecular weight of the glue is 600,000; the viscosity of branched vinyl silicone oil is 500mPa·s, and the mass fraction of vinyl is 1.5%; the ratio of hydroxyl MQ silicone resin to vinyl MQ is 6:1;

[0079] 2) Stir with nitrogen gas, after stirring evenly, dilute 0.8g of acetic acid with 20g of xylene and add slowly, then react at 150°C for 4h under reflux dehydration;

[0080] 3) Cool to room temperature, add 1.5 g of silicon hydrogen cross-linking agent and stir evenly to obtain pressure-sensitive adhesive base 1;

[0081] 4) Add 0.5g of anchoring agent and 100g of toluene to 100g of base glue 1, stir evenly, add 1.5g of platinum catalyst with a platinum content of 4000ppm, stir evenly, spread on an 80μm thick SRF substrat...

Embodiment 2

[0083] 1) Add 15g of branched vinyl silicone oil, 10g of vinyl MQ silicone resin, 25g of hydroxyl raw rubber, 60g of hydroxyl MQ silicone resin, 80g of xylene, and 0.8g of ethynyl cyclohexanol into the reactor, stir and dissolve; wherein, hydroxyl raw The molecular weight of the glue is 620,000; the viscosity of branched vinyl silicone oil is 1000mPa·s, the mass fraction of vinyl is 1.5%, and the ratio of hydroxyl MQ silicone resin to vinyl MQ is 6:1;

[0084] 2) Stir with nitrogen gas, after stirring evenly, dilute 0.8g of acetic acid with 20g of xylene and add slowly, then react at 150°C for 4h under reflux dehydration;

[0085] 3) Cool to room temperature, add 1.5 g of silicon hydrogen cross-linking agent and stir evenly to obtain pressure-sensitive adhesive base 2;

[0086] 4) Add 0.5g of anchoring agent and 100g of ethyl acetate to 100g of base glue 2, stir evenly, add 1.5g of platinum catalyst with a platinum content of 4000ppm, stir evenly, spread on the 80μm thick SRF ...

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Abstract

The invention discloses an organic silicon pressure-sensitive adhesive for fingerprint-resistant glass as well as a preparation method and application of the organic silicon pressure-sensitive adhesive. The novel organic silicon pressure-sensitive adhesive for fingerprint-resistant glass comprises the following components in parts by weight: 10-20 parts of branched vinyl silicone oil, 20-70 parts of hydroxyl raw rubber, 40-70 parts of MQ silicon resin, 0.5-1.5 parts of a silicon-hydrogen crosslinking agent, 0.4-1.0 part of an inhibitor and 80-120 parts of a solvent. Wherein the MQ resin comprises hydroxyl MQ silicon resin and vinyl MQ silicon resin, and the mass ratio of the hydroxyl MQ silicon resin to the vinyl MQ silicon resin is (10-1): (1-5). The organic silicon pressure-sensitive adhesive disclosed by the invention has relatively good stripping force on fingerprint-resistant glass, the stripping force does not change obviously along with time extension, and the organic silicon pressure-sensitive adhesive can be used for bonding the fingerprint-resistant glass and meeting the effect of quickly removing bubbles at the same time, and can be widely applied to related fields such as a protective film for protecting the fingerprint-resistant glass, an electronic product protective film or a waste discharge film and the like.

Description

technical field [0001] The invention relates to the technical field of silicone pressure-sensitive materials, in particular to a silicone pressure-sensitive adhesive capable of bonding anti-fingerprint glass and having good peeling force and degassing property, a preparation method and an application thereof. Background technique [0002] Silicone pressure-sensitive adhesive is an adhesive containing silicon elements. It not only has the pressure sensitivity necessary for pressure-sensitive adhesives, but also has many special properties, such as: (1) Good adhesion to low surface energy materials; 2) Outstanding high and low temperature resistance, can be used for a long time between -50 and 200 ° C, and still maintain its bonding strength and flexibility at high and low temperatures; (3) Has good chemical inertness and outstanding moisture resistance (4) Good chemical resistance, solvent resistance; (5) Good dielectric properties. [0003] With the rapid development of han...

Claims

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Application Information

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IPC IPC(8): C09J183/04C09J183/07C09J11/08C09J7/38
CPCC09J183/04C09J11/08C09J7/38C09J2301/302C08L83/04Y02A30/00
Inventor 章琦衣彦林程继业
Owner WANHUA CHEM GRP
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