Title:
FLUORINE-CONTAINING ALKALI ALUMINOSILICATE GLASS AND STRENGTHENING METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/179623
Kind Code:
A1
Abstract:
A fluorine-containing alkali aluminosilicate glass and a strengthening method therefor and an application thereof. The glass comprises the following components: 52%-68% of SiO2, 8%-23% of Al2O3, 11%-13% of Na2O, 3%-5% of Li2O, 3%-4% of P2O5, 3%-4% of ZrO2, and 1%-2% of a fluoride. Raw materials are prepared according to the components, melted, clarified, and then molded into glass, and the glass is chemically strengthened in a salt bath of potassium nitrate and sodium nitrate at 350-450°C; during first ion exchange, the mass ratio of potassium nitrate to sodium nitrate is (5%-36%):(95%-64%), and the duration is 1-4 h; during second ion exchange, the mass ratio of potassium nitrate to sodium nitrate is (96%-100%):(0%-4%), and the duration is 1 h or shorter. The glass is high in light transmittance and low in refractive index, and can be applied to display apparatuses and mobile devices.
Inventors:
LI JINGBO (CN)
PENG YINPING (CN)
WANG ZHIAN (CN)
LIU ZHONGJUN (CN)
PENG YINPING (CN)
WANG ZHIAN (CN)
LIU ZHONGJUN (CN)
Application Number:
PCT/CN2020/123857
Publication Date:
September 16, 2021
Filing Date:
October 27, 2020
Export Citation:
Assignee:
CAIHONG GROUP SHAOYANG SPECIAL GLASS CO LTD (CN)
International Classes:
C03C3/112; C03B27/03; C03C21/00
Foreign References:
| CN111348828A | 2020-06-30 | |||
| CN110316974A | 2019-10-11 | |||
| CN108863050A | 2018-11-23 | |||
| JPH01308843A | 1989-12-13 |
Attorney, Agent or Firm:
XI'AN TONG DA PATENT AGENCY CO., LTD. (CN)
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