Lithium aluminum silicon glass, lithium aluminum silicon chemically strengthened glass and preparation method and application thereof

A technology of strengthening glass and lithium aluminum silicon, which is applied in the field of glass products, can solve the problems of strength and drop resistance, and compressive stress cannot be effectively balanced, and achieve excellent strength and drop resistance, good ion exchange characteristics, and improved Effect of ion exchange rate

Active Publication Date: 2019-09-17
CHONGQING XINJING SPECIAL GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a lithium aluminum silicon glass, and solve the problem that the optimal distribution of compressive stress and the safety of compressive stress in the existing lithium aluminum silicon glass cannot achieve an effective balance lack of
[0009] Another object of the present invention is to provide a lithium-aluminum-silicon chemically strengthened glass and its preparation method, so as to solve the shortcomings of the existing lithium-aluminum-silicon chemically strengthened glass in terms of strength and drop resistance.

Method used

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  • Lithium aluminum silicon glass, lithium aluminum silicon chemically strengthened glass and preparation method and application thereof
  • Lithium aluminum silicon glass, lithium aluminum silicon chemically strengthened glass and preparation method and application thereof
  • Lithium aluminum silicon glass, lithium aluminum silicon chemically strengthened glass and preparation method and application thereof

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preparation example Construction

[0090] Meanwhile, based on the lithium aluminum silicon glass described above, the embodiment of the present invention also provides a preparation method of the above lithium aluminum silicon chemically strengthened glass. The preparation method of the lithium aluminum silicon chemically strengthened glass comprises the following steps:

[0091] The plain glass to be chemically strengthened is subjected to multi-step binary ion exchange or single-step binary ion exchange treatment in a monovalent metal nitrate bath.

[0092] Wherein, the plain glass to be chemically strengthened is the above-mentioned lithium aluminum silicate glass. Since the lithium-aluminosilicate glass, that is, the plain glass contains high silicon and aluminum and high magnesium content, specifically, the components contained in the plain glass to be chemically strengthened and each component are preferably as described above Plain glass, in order to save space, the components and contents of the above-...

Embodiment 11-16

[0112] Embodiments 11-16 respectively provide a lithium aluminum silicate glass. Based on the total amount of components contained in the lithium-aluminosilicate glass as 100 mol%, the components contained in the lithium-aluminosilicate glass in each example are shown in Table 1 below.

[0113] The lithium-aluminosilicate glasses provided in Examples 11-16 were mixed according to the recipes in Table 1, and the mixed materials were put into platinum crucibles, and melted at 1650° C. for 5 hours in a high-temperature lifting furnace, and then Pouring in a preheated stainless steel mold, then putting it into an annealing furnace, and performing a long-term gradient annealing around the annealing point to eliminate the internal stress of the lithium-aluminosilicate glass. After the annealing is completed, the lithium-aluminosilicate glass bricks are cut on the six sides to obtain lithium-aluminosilicate glass bricks of appropriate size, which are then cut, flat-ground, and swept by...

Embodiment 21-26

[0122] Examples 21-26 respectively provide a lithium aluminum silicon chemically strengthened glass and a preparation method thereof. The relevant properties of each of the lithium aluminum silicon chemically strengthened glasses and the chemical strengthening treatment steps and relevant process parameters of the preparation method are described in Table 2 below.

[0123] The relevant mechanical properties of the chemically strengthened glass provided by each example are also shown in Table 2.

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Abstract

The invention discloses lithium aluminum silicon glass, lithium aluminum silicon chemically strengthened glass and a preparation method and application thereof. The molar content of oxide components contained in the lithium aluminum silicon glass satisfies the following relationship: the SiO2 content is at least 66.5 mol%, and the total amount of an alkali metal oxide usable for ion exchange is not more than 14 mol%; (Na2O+Li2O) / (SiO2+Al2O3) is 0.09-0.22; Na2O / Li2O is 0.4-1.2; MgO / SiO2 is 6%-18%; (Na2O+Li2O+0.3*MgO) / Al2O3 is 0.7-1.4; and 0.5%<P2O5+ZnO+SnO2+K2O+ZrO2+TiO2<7%. The lithium aluminum silicon chemically strengthened glass is formed by chemically strengthening the lithium aluminum silicon glass as basic glass.

Description

technical field [0001] The invention belongs to the technical field of glass products, and in particular relates to a lithium-aluminosilicate glass, a lithium-aluminosilicate chemically strengthened glass and a preparation method and application thereof. Background technique [0002] Glass is widely used in daily life due to its own characteristics of transparency and high temperature resistance. For example, glass is widely used in protective devices, decoration and other fields. However, glass also has certain deficiencies, such as weak impact resistance and brittleness, which limit the application of glass in some fields. With the popularity of electronic products, the requirements for glass materials are getting higher and higher. [0003] Since 2007, with the popularization of large-area touch-screen electronic products such as smartphones and tablet computers, consumers have put forward higher requirements for the anti-destructive performance of displays, such as imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C21/00C03C3/097C03C3/091
CPCC03C3/091C03C3/097C03C21/002
Inventor 胡伟覃文城谈宝权陈芳华
Owner CHONGQING XINJING SPECIAL GLASS CO LTD
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