A kind of composition for aluminosilicate glass, aluminosilicate glass and its preparation method and application

A technology for aluminosilicate glass and composition, which is applied in the field of composition for aluminosilicate glass, can solve the problems of limited application range of cover glass, increased expansion coefficient and high expansion coefficient, and is beneficial to the glass yield rate. , the effect of small polarizability and low coefficient of linear expansion

Active Publication Date: 2018-06-08
DONGXU OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in existing products, most of the protective cover glass has a relatively high expansion coefficient (at 70×10 -7 -90×10 -7 / °C), mainly because the alkali metal contained in it increases the expansion coefficient of the glass, which may not be suitable for glass products with a lower expansion coefficient, thus limiting the application range of the cover glass.

Method used

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  • A kind of composition for aluminosilicate glass, aluminosilicate glass and its preparation method and application
  • A kind of composition for aluminosilicate glass, aluminosilicate glass and its preparation method and application
  • A kind of composition for aluminosilicate glass, aluminosilicate glass and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0051] Weigh each component as shown in Table 1, mix well, pour the mixture into a platinum-rhodium crucible, then melt and stir with a platinum rod to remove air bubbles. The molten glass is poured into a stainless steel cast iron mold to form a specified block glass product, and then the glass product is annealed in an annealing furnace, and the power is turned off to cool down with the furnace. The glass products are cut, ground and polished, and the polished glass products are put into the molten KNO at 420°C 3 Treat in different time, then take it out and cool it, clean it with deionized water and dry it to get the finished product of aluminosilicate glass. Various properties of each aluminosilicate glass finished product were measured respectively, and the results are shown in Table 1.

[0052] Table 1

[0053]

Embodiment 7-12

[0055] Weigh each component as shown in Table 2, mix well, pour the mixture into a platinum-rhodium crucible, then melt and stir with a platinum rod to discharge air bubbles. The molten glass is poured into a stainless steel cast iron mold to form a specified block glass product, and then the glass product is annealed in an annealing furnace, and the power is turned off to cool down with the furnace. The glass products are cut, ground and polished, and the polished glass products are put into the molten KNO at 440°C 3 Treat in different time, then take it out and cool it, clean it with deionized water and dry it to get the finished product of aluminosilicate glass. Various properties of each aluminosilicate glass product were measured respectively, and the results are shown in Table 2.

[0056] Table 2

[0057]

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Abstract

The invention relates to the field of glass, and discloses a composition for aluminosilicate glass, aluminosilicate glass and a preparation method and application thereof. The composition for aluminosilicate glass of the present invention contains SiO2, Al2O3, B2O3, Na2O, K2O, MgO, ZnO and CeO2. The aluminosilicate glass prepared by using the composition for aluminosilicate glass has fewer bubbles and a low coefficient of linear expansion (the coefficient of linear expansion in the range of 25-300°C is 45×10-7-60×10- 7 / ℃), excellent chemical strengthening performance (the surface stress after strengthening is 450-520MPa, and the depth of the stress layer is 10-20μm), and when it is applied to the cover glass for display devices, it can greatly expand its application range.

Description

technical field [0001] The invention relates to the field of glass, in particular to a composition for aluminosilicate glass, aluminosilicate glass and a preparation method and application thereof. Background technique [0002] With the development of display technology, LCD TVs, tablet computers, mobile phones, digital cameras and other electronic products can see touch screens. At present, the mainstream product of touch screen is capacitive touch screen. During the use of these display products, contact and friction often occur, plus inadvertent scratches and touches. The resulting scratches directly cause the surface of the touch screen to be rough and the smoothness is reduced, which affects the use effect and is more likely to cause the screen to break. Glass has always been an indispensable material in the development of display technology. Changing the composition of the glass surface through chemical tempering can improve the strength of the glass, making the glass...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/095C03C21/00
CPCC03C3/095C03C21/002
Inventor 徐兴军沈玉国张广涛李俊锋闫冬成王丽红胡恒广
Owner DONGXU OPTOELECTRONICS TECH CO LTD
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