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Aluminosilicate strengthened glass and preparation method thereof

A technology of aluminosilicate glass and reinforced glass, which is applied in the field of glass manufacturing to achieve the effects of perfect glass network structure, high processing efficiency and excellent mechanical properties

Active Publication Date: 2022-03-08
QINGYUAN CSG NEW ENERGY SAVING MATERIALS CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few studies on the expansion coefficient of cover glass by traditional methods. -7 ℃ -1 , 350℃~550℃ thermal expansion coefficient is 80~100×10 -7 ℃ -1 , but there is still room for further improvement

Method used

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  • Aluminosilicate strengthened glass and preparation method thereof
  • Aluminosilicate strengthened glass and preparation method thereof
  • Aluminosilicate strengthened glass and preparation method thereof

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preparation example Construction

[0063] The present invention also provides the preparation method of the aluminosilicate strengthened glass, comprising the following steps:

[0064] Mixing the raw materials according to the composition of the above-mentioned aluminosilicate glass, performing melting treatment, then annealing and forming to prepare the aluminosilicate glass; and

[0065] Immersion of aluminosilicate glass in NaNO 3 and KNO 3 Ion exchange is carried out in mixed molten salts to prepare the aluminosilicate strengthened glass.

[0066] The specific preparation process of the aluminosilicate glass involved in the present invention can be obtained in the traditional flat glass manufacturing process, and its manufacturing process is not limited to the float forming process, overflow down-draw method, lead-up method, flat drawing method, and calendering method Wait.

[0067] In one example, the melting temperature ranges from 1500°C to 1700°C.

[0068] In one example, the annealing temperature i...

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Abstract

The invention relates to an aluminosilicate strengthened glass and a preparation method thereof. The aluminosilicate strengthened glass, using NaNO 3 and KNO 3 One-step strengthening of aluminosilicate glass by mixing molten salts; in terms of weight percentage, the composition of the aluminosilicate glass includes: 53% to 64% of SiO 2 , 23% to 28% Al 2 o 3 , 4% to 7% Li 2 O, 1.5% to 5.5% Na 2 O, 0.01% to 0.8% K 2 O, 1%~5% MgO, 3.5%~6% B 2 o 3 And 0.4% ~ 3% ZrO 2 . Compared with traditional strengthened glass, the aluminosilicate strengthened glass has more excellent mechanical properties, and can pass special performance tests such as rough ground drop, ring-in-ring test and four-point bending strength test, and has a lower thermal expansion coefficient.

Description

technical field [0001] The invention relates to the technical field of glass manufacturing, in particular to an aluminosilicate strengthened glass and a preparation method thereof. Background technique [0002] Mobile phones have become a necessity in daily life today, tablet computers are also becoming popular, and various devices with touch screen panels are also widely used in various industries. In recent years, with the development of mobile Internet 5G communication technology and wireless charging technology, more and more mobile phones have begun to use double-sided glass design. At the same time, in order to pursue differentiated and personalized design concepts such as thinness and narrow bezels, more and more mobile phones have adopted 3D curved cover or back panel designs. [0003] The vast number of mobile phone end users are still not satisfied with the simple drop resistance, scratch resistance and falling ball impact resistance. These traditional performance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C21/00C03C3/097C03C3/093
CPCC03C21/002C03C3/097C03C3/093
Inventor 刘红刚宋纪营陈志鸿王琰何进肖子凡周翔磊平文亮戴斌
Owner QINGYUAN CSG NEW ENERGY SAVING MATERIALS CO LTD
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