Ultrathin high-aluminum glass chemical strengthening and film-covering strengthening process

A high-alumina glass, ultra-thin technology, applied in glass production, coating and other directions, can solve the problems of limiting the application range and practical performance of glass, low flexural strength, high glass brittleness, etc., to improve scratch resistance, The effect of increasing surface stress and increasing hardness

Active Publication Date: 2021-10-15
海南海控特玻科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] High-aluminosilicate glass is light and high-strength, has excellent mechanical properties, electrical properties, optical properties, and ion exchange properties, and has great advantages in the field of electronic display. However, the high brittleness and low bending strength of glass limit the Application range and actual performance of glass

Method used

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  • Ultrathin high-aluminum glass chemical strengthening and film-covering strengthening process
  • Ultrathin high-aluminum glass chemical strengthening and film-covering strengthening process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 Ultra-thin high-alumina glass chemical strengthening and coating strengthening process

[0027] (1) Cleaning: Put the glass substrate with a thickness of 0.07mm into a cleaning agent and soak for 20 minutes. The cleaning agent consists of 1% tetrabutylammonium fluoride, 6% oxalic acid, 30% sodium gluconate, 20% made of polyacrylic acid and the rest of water. After soaking, the glass substrate is placed in an ultrasonic liquid for ultrasonic washing for 10 minutes. The ultrasonic frequency is 20kHz and the output power is 250W. The ultrasonic liquid consists of 2% detergent, 20% Prepared with ethanol solution with a mass fraction of 60% and the rest of water, put it into an oven for drying after ultrasonication, the drying time is 2 hours, and the drying temperature is 60°C;

[0028] (2) Preheating: put the cleaned glass substrate into the muffle furnace and slowly raise the temperature to the corresponding tempering temperature of 200°C. The speed is 10°C / ...

Embodiment 2

[0031] Embodiment 2 Ultra-thin high-alumina glass chemical strengthening and coating strengthening process

[0032] (1) Cleaning: Put the glass substrate with a thickness of 0.07 mm into a cleaning agent and soak for 40 minutes. The cleaning agent consists of 5% tetrabutylammonium fluoride, 10% oxalic acid, 40% sodium gluconate, 40% made of polyacrylic acid and the rest of water. After soaking, the glass substrate is placed in an ultrasonic liquid for ultrasonic washing for 20 minutes. The ultrasonic frequency is 25kHz and the output power is 250W. The ultrasonic liquid consists of 3% detergent, 45% Prepared with ethanol solution with a mass fraction of 60% and the rest of water, put it into an oven for drying after ultrasonication, the drying time is 2 hours, and the drying temperature is 70°C;

[0033] (2) Preheating: put the cleaned glass substrate into the muffle furnace and slowly raise the temperature to the corresponding tempering temperature of 250°C. The rate is 15°C...

Embodiment 3

[0036] Example 3 Ultra-thin high-alumina glass chemical strengthening and coating strengthening process

[0037] (1) Cleaning: Put the glass substrate with a thickness of 0.07mm into a cleaning agent and soak for 30 minutes. The cleaning agent consists of 3% tetrabutylammonium fluoride, 8% oxalic acid, 35% sodium gluconate, 23% made of polyacrylic acid and the rest of water. After soaking, the glass substrate is placed in an ultrasonic liquid for ultrasonic washing for 15 minutes. The ultrasonic frequency is 30kHz and the output power is 250W. The ultrasonic liquid consists of 2.5% detergent, 30% Prepared with ethanol solution with a mass fraction of 60% and the rest of water, put it into an oven for drying after ultrasonication, the drying time is 3 hours, and the drying temperature is 60°C;

[0038] (2) Preheating: put the cleaned glass substrate into the muffle furnace and slowly raise the temperature to the corresponding tempering temperature of 225°C, the heating rate is ...

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Abstract

The invention provides an ultrathin high-aluminum glass chemical strengthening and film-covering strengthening process which comprises the steps: (1) cleaning: soaking a glass substrate in a cleaning agent which comprises tetrabutylammonium fluoride, oxalic acid, sodium gluconate and polyacrylic acid, ultrasonically washing the soaked glass substrate, putting the glass substrate in a drying oven after ultrasonic treatment, and drying; (2) preheating: putting the cleaned glass substrate into a muffle furnace for heating and preheating; (3) chemical strengthening: placing the preheated glass substrate in molten salt, wherein the molten salt is prepared from potassium nitrate, sodium nitrate, sodium silicate, potassium fluoride, potassium carbonate and diatomite; and (4) film-covering and strengthening: spin-coating a protective film coating on the surface of the chemically strengthened glass substrate, wherein the protective film coating comprises polydimethylsiloxane, silicon oxide, zirconium oxide and polyvinyl chloride. According to the preparation process, the surface stress, the stress layer depth, the hardness and the bending strength of the ultrathin high-aluminum glass are improved.

Description

technical field [0001] The invention relates to the field of high-alumina glass strengthening technology, in particular to an ultra-thin high-alumina glass chemical strengthening and coating strengthening technology. Background technique [0002] High-aluminosilicate glass is light and high-strength, has excellent mechanical properties, electrical properties, optical properties, and ion exchange properties, and has great advantages in the field of electronic display. However, the high brittleness and low bending strength of glass limit the The scope of application and practical performance of glass. In recent years, with the upgrading of electronic products and the ultra-large-scale application of the electronics industry, the requirements for thinner and higher strength of electronic display glass have been continuously increased. How to achieve thinner and functional glass while maintaining the strength of the glass is an urgent need. solved problem. For example: CN20181...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C21/00C03C17/30
CPCC03C21/001C03C17/009C03C2218/116C03C2217/445C03C2217/478C03C2217/475Y02P40/57
Inventor 姜宏李筱凡赵会峰郝霞周莉李军葛潘国治
Owner 海南海控特玻科技有限公司
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