High-alkali high-alumina silicate glass suitable for chemical enhanced treatment

A high-aluminosilicate, chemical technology, applied in the field of glass production, can solve the problems of low hardness and mechanical strength, poor display, low Young's modulus, etc., to improve ion exchange performance, improve chemical stability, improve The effect of mechanical strength

Inactive Publication Date: 2015-07-29
WUHU DONGXU OPTOELECTRONICS EQUIP TECH
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Problems solved by technology

Acrylic resin organic board is used as the screen protection material. Due to the low Young's modulus of acrylic resin, when pressing with fingers, etc., the acrylic resin substrate may bend and cause poor display.
However, ordinary soda-lime-silicate glass is used as the screen protection material. Due to its low surface strength, the screen is easily scratched after...

Method used

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  • High-alkali high-alumina silicate glass suitable for chemical enhanced treatment
  • High-alkali high-alumina silicate glass suitable for chemical enhanced treatment

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Embodiment Construction

[0032] The components that can be contained in the glass formulation of the present invention will be described below, and the content of each component is expressed in weight percent.

[0033] SiO 2 It is the main component of the glass skeleton, which can improve the glass strain point, chemical stability and mechanical strength of the glass, and reduce the thermal expansion coefficient and density of the glass. When the content is below 60%, the chemical stability of the glass is not good, but when the content exceeds 68%, the high-temperature viscosity of the glass increases, making the glass melting temperature too high and difficult to melt. In order to obtain a glass with high Young's modulus and suitable for rapid chemical strengthening, SiO 2 The ratio is limited to 62-68%.

[0034] Al 2 o 3 It is an intermediate oxide, which improves the hardness and mechanical strength of the glass, improves the chemical stability of the glass and can accelerate the ion exchange...

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Abstract

The invention discloses high-alkali high-alumina silicate glass suitable for chemical enhanced treatment. The glass comprises the following chemical ingredients, by weight, 62-68% of SiO2, 11-16% of Al2O3, 13-18% of Na2O, 1-3% of K2O, 0-2% of Li2O, 1-3% of CaO, 0-3% of B2O3, 0-3% of ZnO, 0.01-1% of TiO2, 0.01-2% of ZrO2 and at least a clarifying agent. The clarifying agent is selected from 0-0.5 wt% of SnO2, 0-0.5 wt% of Sb2O3, 0-1 wt% of F and 0-1 wt% of CeO2. The glass manufactured by the above formula undergoes chemical enhanced treatment in KNO3 molten salt of 420-460 DEG C for more than 5 hours so as to form protective glass with more than 600 MPa of pressure stress formed on the surface and a pressure stress layer of more than 50 microns thick. The protective glass can be applied to mobile devices such as a mobile telephone, a smart phone, a flat computer, a notebook computer and a PDA.

Description

technical field [0001] The invention belongs to the technical field of glass production, and relates to a formula suitable for protective cover glass for mobile devices such as mobile phones, smart phones, tablet computers, notebook computers and PDAs, in particular a high-alkali glass suitable for chemical strengthening High alumina silicate glass. Background technique [0002] With the development of modern display technology, a large number of electronic display products have emerged in the last 10 years, and advanced flat panel display products have emerged in an endless stream, such as: mobile phones, handheld game consoles, LCD TVs, LCD monitors, notebook LCD monitors, cash machines, and print advertising media machines , Multimedia information inquiry machine, etc. [0003] Although the surface of the above-mentioned display products has glass material as a key part of its imaging system, this type of glass has not undergone glass strengthening treatment. In these f...

Claims

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Application Information

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IPC IPC(8): C03C3/118C03C3/093
Inventor 田鹏闫冬成王丽红李俊锋张广涛安利营龚国进
Owner WUHU DONGXU OPTOELECTRONICS EQUIP TECH
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