	US 11,807,576 B2
	Non-alkali aluminum silicate glass, preparation method therefor and application thereof
Guangtao Zhang, Hebei (CN); Junfeng Wang, Hebei (CN); Gang Li, Hebei (CN); Wenmei Han, Hebei (CN); Zhiyong Li, Hebei (CN); Dongcheng Yan, Hebei (CN); and Lihong Wang, Hebei (CN)
Assigned to TUNGHSU TECHNOLOGY GROUP CO., LTD., Beijing (CN); and TUNGHSU GROUP CO., LTD., Hebei (CN)
Appl. No. 17/285,993
Filed by TUNGHSU TECHNOLOGY GROUP CO., LTD., Beijing (CN); and TUNGHSU GROUP CO., LTD., Hebei (CN)
PCT Filed Oct. 16, 2019, PCT No. PCT/CN2019/111444 § 371(c)(1), (2) Date May 18, 2021, PCT Pub. No. WO2020/078376, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 201811204465.3 (CN), filed on Oct. 16, 2018.
Prior Publication US 2021/0380471 A1, Dec. 9, 2021
Int. Cl. C03C 3/087 (2006.01); C03C 3/118 (2006.01)

CPC C03C 3/118 (2013.01)

19 Claims

1. Non-alkali aluminum silicate glass, wherein a glass melt of the non-alkali aluminum silicate glass at 1600° C. has:

a resistivity of 200 Ω·cm or less;

a temperature T₃₅₀₀₀corresponding to 35000 P viscosity is 1250° C. or more; and

a annealing point corresponding to 10¹³P viscosity is 790° C. or more;

wherein based on a total molar weight of the non-alkali aluminum silicate glass, the non-alkali aluminum silicate glass comprises, by oxide:

69-73 mol % of SiO₂,

11-15 mol % of Al₂O₃,

0-2 mol % of B₂O₃,

2-8 mol % of MgO,

2-8 mol % of CaO,

0-3 mol % of SrO,

3-10 mol % of BaO,

0.1-2 mol % of ZnO,

0.02-0.7 mol % of RE₂O₃,

0.01-0.5 mol % of Se₂O₃, and

less than 0.05 mol % of R₂O,

where RE represents rare earth elements, and R represents alkali metals.