Composition for glass, chemical tempered glass as well as preparation method and application thereof

A technology for strengthening glass and composition, applied in the field of glass manufacturing, can solve the problems of difficulty in removing inclusions, low quality of high-viscosity glass melt, etc., and achieve the effects of increasing volume, reducing content and reducing partial pressure of N2 gas

Active Publication Date: 2018-07-24
DONGXU OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of poor quality of high-viscosity glass melt due to the difficulty in removing inclusions in the prior art, and to provid...

Method used

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  • Composition for glass, chemical tempered glass as well as preparation method and application thereof
  • Composition for glass, chemical tempered glass as well as preparation method and application thereof
  • Composition for glass, chemical tempered glass as well as preparation method and application thereof

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Experimental program
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Embodiment approach

[0051] According to a preferred embodiment of the present invention, the composition contains 52-60wt% SiO 2 , 17-25wt% A1 2 o 3 , 2-11wt% of B 2 o 3 +P 2 o 5 , 5-12wt% Na 2 O, 0.5-6 wt% Li 2 O, 0-2.5 wt% K 2 O, 0.5-9wt% MgO+TiO 2 , 0.2-3wt% ZnO, 0.1-2wt% Y 2 o 3 +La 2 o 3 +Nd 2 o 3 .

[0052] Preferably, the composition contains B 2 o 3 0-15wt%, P 2 o 5 It is 0-11.9wt%, preferably 0-11wt%. e.g. B 2 o 3 0-4wt% and / or P 2 o 5 It is 0-8wt%.

[0053] Preferably, the composition contains 0-6 wt% of MgO, TiO 2 It is 0-3wt%. eg MgO 0-3wt% and / or TiO 2 0-2wt%

[0054] Preferably, the composition contains Y 2 o 3 0-1wt%, La 2 o 3 0-2wt%, Nd 2 o 3 0-2wt%. e.g. Y 2 o 3 0.1-1wt%, La 2 o 3 0.1-0.6wt% and / or Nd 2 o 3 It is 0.1-0.7wt%.

[0055] According to the present invention, the composition for glass of the present invention may further contain a chemical clarifier as necessary. The chemical clarifier is not particularly limited, and may be an...

Embodiment 1-13、 comparative example 1-3

[0104] Weigh each raw material component according to the ratio shown in Table 1-3, mix well, and pour the mixture into a high zirconium brick crucible (ZrO 2 >85wt%), then in η x Corresponding T of Poise viscosity x Heating in a resistance furnace for 48 hours, and using high zirconium rods (ZrO 2 >85wt%) the stirrer stirs slowly at a constant speed. Pour the molten glass into a stainless steel cast iron mold to form a specified block glass product, then anneal the glass product in an annealing furnace for 2 hours, turn off the power and cool down to 25°C with the furnace. The glass product is cut, ground and polished, then cleaned with deionized water and dried to obtain a glass product with a thickness of 0.5 mm. Part of the glass products are cut, ground and polished, and the surface of the polished glass products of 80×80×0.5 mm is cleaned with deionized water, and chemically strengthened after being preheated in a preheating furnace. Among them, putting Examples 1-3,...

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Abstract

The invention relates to the field of glass production, and discloses a composition for glass, chemical tempered glass as well as a preparation method and application thereof. The composition is prepared from 42 to 64 weight percent of SiO2, 15 to 28 weight percent of Al2O3, 1 to 15 weight percent of B2O3 and P2O5, 4 to 15 weight percent of Na2O, 0 to 8 weight percent of Li2O, 0 to 6 weight percent of K2O, 0.5 to 9 weight percent of MgO and TiO2, 0.1 to 4 weight percent of ZnO, 0.1 to 4 weight percent of Y2O3, La2O3 and Nd2O3. The composition satisfies the following conditions: (1) the temperature T100 corresponding to the viscosity of 100 is 1700 DEG C or higher; and (2) the surface tension at 1300 DEG C is smaller than 420N/m. The composition for the glass of the invention and glass prepared by the preparation method of the invention have the advantages of low content of impurities, simple preparation process, low cost and the like.

Description

technical field [0001] The invention relates to the field of glass manufacturing, in particular to a composition for glass, chemically strengthened glass and a preparation method and application thereof. Background technique [0002] In the field of display screen surface protection glass, high-alumina high-alkali silicate chemically strengthened glass is usually used as a protective cover. In order to reduce the burden of using handheld devices, lighter weight and thinner thickness have become an inevitable trend. Under the guidance of this development trend, the thickness of chemically strengthened protective glass is also gradually reduced. However, with the reduction of thickness, the mechanical strength of the glass is greatly reduced, and the drop impact resistance is seriously challenged, and the problem of broken protective cover glass occurs from time to time. In order to maintain sufficient strength, the ion exchange depth is continuously deepened and the surface ...

Claims

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Application Information

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IPC IPC(8): C03C3/097C03C3/095C03C1/00
Inventor 张广涛郑权王丽红闫冬成李俊锋王博徐兴军
Owner DONGXU OPTOELECTRONICS TECH CO LTD
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