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Alkaline aluminosilicate protective glass capable of realizing ion exchange and preparation method thereof

An ion exchange and aluminosilicate technology, applied in the field of glass production, can solve the problems of shallow depth of ion exchange layer and insufficient surface compressive stress, and achieve the effect of reducing fuel consumption and pollution

Inactive Publication Date: 2017-05-24
IRICO DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an ion-exchangeable alkali aluminosilicate protective glass and its preparation method to solve the problems of shallow depth of ion-exchange layer and insufficient surface compressive stress in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] An ion-exchangeable alkali aluminosilicate protective glass, calculated by the total mass percentage, its components include: 61.65% SiO 2 , 19.51% Al 2 O 3 , 4.15% B 2 O 3 , 12.95% Na 2 O, 0.01% K 2 O, 1.46% MgO, 0.03% CaO and 0.23% SnO 2 .

[0039] The thin glass obtained according to the above steps 1 to 3, at 390 ° C KNO 3 Place in molten chemical strengthening solution for 7h. After the chemically strengthened glass sample was wiped clean, it was placed on a prism coated with refraction liquid. The surface compressive stress of the sample after strengthening was 907.3 MPa, and the depth of the strengthened ion exchange layer was 61.5 μm as measured by the surface stress meter.

Embodiment 2

[0041] An ion-exchangeable alkaline aluminosilicate protective glass, calculated by the total mass percentage, its components include: 62.9% SiO 2 , 15% Al 2 O 3 , 1.0% B 2 O 3 , 13.0% Na 2 O, 5.0% K 2 O, 3.0% MgO, and 0.1% SnO 2 .

[0042] The thin glass obtained according to the above steps 1 to 3, at 410 ° C KNO 3 Place in molten chemical strengthening solution for 6h. After the chemically strengthened glass sample was wiped clean, it was placed on a prism coated with refraction liquid. The surface compressive stress of the sample after strengthening was 893.7MPa measured by a surface stress meter, and the depth of the strengthened ion exchange layer was 63.2μm.

Embodiment 3

[0044] An ion-exchangeable alkaline aluminosilicate protective glass, calculated by the total mass percentage, its components include: 62.58% SiO 2 , 16.89% Al 2 O 3 , 4.59% B 2 O 3 , 13.36% Na 2 O, 0.01% K 2 O, 1.9% MgO, 0.27% CaO and 0.4% SnO 2 .

[0045] The thin glass obtained according to the above steps 1 to 3, at 440 ° C KNO 3 Place in molten chemical strengthening solution for 5h. After the chemically strengthened glass sample was wiped clean, it was placed on a prism coated with a refraction liquid. The surface compressive stress of the sample after strengthening was 853.6 MPa, and the depth of the strengthened ion exchange layer was 57.3 μm as measured by a surface stress meter.

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Abstract

The invention discloses an alkaline aluminosilicate protective glass capable of realizing ion exchange and a preparation method thereof. The alkaline aluminosilicate protective glass capable of realizing ion exchange comprises the following components in percentage by mass: no less than 59.2% and no more than 63.9% of SiO2, no less than 15% and no more than 19.51% of Al2O3, no less than 1% and no more than 5.7% of B2O3, no less than 11.54% and no more than 13.36% of Na2O, no less than 0% and no more than 5% of K2O, no less than 1.35% and no more than 3% of MgO, no less than 0 and no more than 0.42% of CaO and no less than 0.1% and no more than 0.4% of SnO2. The glass disclosed by the invention has a high surface compressive stress and a deep ion exchange layer, the surface compressive stress reaches 850 MPa or above, and the ion exchange layer depth reaches 57 mu m or above; and the glass is scratch-resistant, thereby meeting the service performance requirement of the product.

Description

technical field [0001] The invention belongs to the technical field of glass production, and particularly relates to an ion-exchangeable alkali aluminosilicate protective glass and a preparation method. Background technique [0002] With the rapid development of modern technology, advanced electronic flat panel display products emerge one after another. A layer of protective glass is placed on the surface of these display products. The material of this protective glass is alkaline aluminosilicate glass, which requires high mechanical strength, high resistance to It has the characteristics of good wear and chemical stability, which can effectively prevent the surface of display products from being damaged by impact and scratches, and prolong the service life of electronic display products. Therefore, it is necessary to produce a compressive stress layer on the glass surface by tempering to avoid Improve the surface strength of glass. [0003] At present, there are two method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/091C03C21/00
CPCC03C3/091C03C21/002
Inventor 兰静
Owner IRICO DISPLAY DEVICES
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