Aluminosilicate glass, preparation method thereof and cover plate glass

Abstract

The invention provides aluminosilicate glass, a preparation method of the aluminosilicate glass and cover plate glass. The aluminosilicate glass is a group of glass compositions in an R2O-RO-Al2O3-SiO2 system. The 35kP temperature (T35kP) of the glass composition is not higher than 1230 DEG C, the 120kP temperature (T120kP) of the glass composition is not higher than 1155 DEG C, the (T35kP-TL) is greater than or equal to 90 DEG C, and the (T120kP-TL) is greater than or equal to 20 DEG C, so that the glass is not easy to generate a devitrification phenomenon in the industrialization process. The glass composition can be subjected to composite chemical strengthening, and when the strengthened glass is loaded on the outer layer of a display such as a mobile phone and the like to be subjected to a whole machine falling performance test, the glass is not broken after falling from a free falling body with the height of at least 150cm; the strength performance of the glass is superior to or at least equivalent to that of sodium aluminosilicate glass and part of alkali aluminosilicate glass in the current cover plate glass market.

Description

technical field [0001] The invention belongs to the technical field of cover glass, and in particular relates to an aluminosilicate glass, a preparation method thereof and a cover glass. Background technique [0002] The advent of the 5G communication era has made electronic display devices such as touch screens have higher requirements for the signal transmission capabilities of their outer protective materials. Compared with metal and plastic protective materials, glass has been widely used as a protective material for electronic display devices because of its extremely low electromagnetic wave attenuation coefficient, high strength, scratch resistance and aesthetics. [0003] With the popularity of electronic display devices such as touch screens in mass electronic consumer products, in order to improve the service life of electronic products and the display effect of the screen, the optical and mechanical performance requirements of the screen protection glass are also i...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a kind of aluminosilicate glass and its preparation method and cover glass, so as to solve the problem of material composition, strength performance and industrialization of the cover material in the prior art. problem of balance between

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