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Aluminosilicate glass and preparation method thereof, and touch screen glass cover plate

The technology of aluminosilicate glass and glass cover plate is applied in the preparation of aluminosilicate glass and the field of touch screen glass cover plate. To achieve the effect of reducing density, reducing expansion coefficient and good thermal stability

Inactive Publication Date: 2018-05-18
CSG HOLDING +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (1) Defects of the original film: Defects in the process of melting, cutting, grinding, polishing, etc. of the glass lead to bursting during the chemical tempering process
[0009] (2) Shelf stress: the glass tempered support frame causes the glass to be stressed unevenly, resulting in bursting
[0010] (3) The tempering time is too long or the temperature is too high, resulting in the glass exchange layer being too deep

Method used

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  • Aluminosilicate glass and preparation method thereof, and touch screen glass cover plate
  • Aluminosilicate glass and preparation method thereof, and touch screen glass cover plate
  • Aluminosilicate glass and preparation method thereof, and touch screen glass cover plate

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Embodiment 12

[0085] The data comparison of embodiment 12 and embodiment 5, 8 and 14 shows that 0.15≤(ZrO 2 +ZnO+B 2 o 3 ) / Al 2 o 3 ≤0.37, it can further improve the Young's modulus, thermal stability and chemical strengthening effect of the glass, and the self-explosion of the glass sheet does not occur during the chemical tempering process.

[0086] Compared with the data of Comparative Example 1, it can be known that Example 12 contains B 2 o 3 The aluminosilicate glass has a lower linear expansion coefficient of 84.5×10 -7 / ℃, while the linear expansion coefficient of Comparative Example 1 is 95×10 -7 / °C, the lower coefficient of linear expansion ensures the dimensional stability of the cover glass during high-temperature chemical tempering, and prevents the cover glass from exploding and breaking due to excessive volume expansion-shrinkage.

[0087] Compared with the data of Comparative Examples 2, 3 and 4, it can be seen that Example 12 contains ZnO and ZrO 2 The boroaluminos...

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PUM

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Abstract

The invention discloses an aluminosilicate glass and a preparation method thereof, and a touch screen glass cover plate, wherein the aluminosilicate glass contains, by mass (calculated as the oxide),57-66% of SiO2, 12-23% of Al2O3, 1-7% of MgO, 8-15% of Na2O, more than 0 and less than or equal to 4% of ZnO, and more than 0 and less than or equal to 2% of ZrO2. According to the present invention,the components of the glass contain ZnO and ZrO2, such that the elastic modulus, the hardness and other mechanical performances of the cover plate glass can be improved, the ion exchange effect can beimproved, and the production cost can be reduced.

Description

technical field [0001] The present invention relates to the field of glass manufacturing, in particular to an aluminosilicate glass and a method for preparing the aluminosilicate glass, and further relates to a touch screen glass cover. Background technique [0002] With the continuous development of the world's high-tech industry, the demand for ultra-thin glass in the international market is increasing, especially the ultra-thin glass cover for protecting flat panel displays and mobile phones. Flat panel displays require light weight, small size, and portability, which requires that the thickness of the cover glass must be less than 1mm. This kind of ultra-thin cover glass usually adopts chemical tempering method to make the glass surface undergo ion exchange, so as to increase the compressive stress on the glass surface and the depth of the compressive stress layer, and improve the strength of the glass. At the same time, the central tensile stress will also increase, wh...

Claims

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Application Information

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IPC IPC(8): C03C3/093
CPCC03C3/093
Inventor 刘攀肖子凡邓臻禄戴斌何浩波
Owner CSG HOLDING
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