Glass composition, low inclusion content glass, preparation method therefor and application thereof

US11746039B2 · kind B2 · utility

Assignee

• TUNGHSU GROUP CO., LTD. · CN

Inventors

• Guangtao Zhang · Shijiazhuang, CN
• Qing Li · Tokyo, JP
• Quan Zheng · Shijiazhuang, CN
• Lihong Wang · Chesterfield, US
• Dongcheng Yan · Shijiazhuang, CN
• Junfeng Wang · Chengdu, CN
• Bo Wang · Tuji, CN
• Zhiyong Li · Foster City, US

Key dates

• Filing date: Nov 27, 2018
• Grant date: Sep 5, 2023
• Expiry date: Nov 21, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C19/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present disclosure relates to glass manufacturing, a glass composition, glass with a low inclusion content and a preparation method therefor and use thereof. The composition comprises 50-64 wt. % SiO2, 14-24 wt. % Al2O3, 0-7 wt. % B2O3+P2O5, 0.5-7 wt. % MgO, 1-10 wt. % CaO, 0-9 wt. % SrO, 0.1-14 wt. % BaO, 0.1-5 wt. % ZnO, 0.1-4 wt. % TiO2, 0.1-7 wt. % Y2O3+La2O3+Nd2O3, and <0.05 wt. % R2O, wherein R2O is a sum of the content of Li2O, Na2O and K2O, and the composition satisfies the following conditions: (1) a temperature T100 corresponding to a viscosity of 100 P is 1730° C. or higher; (2) a surface tension at 1300° C. is less than 420 mN/m. The glass prepared by the glass composition and the glass with a low inclusion content preparation method has the advantages of having low inclusion content, having a simple preparation process, being low in cost and so on.