公开(公告)号：EP4455101A1

公开(公告)日：2024-10-30

申请号：EP22910179.5

申请日：2022-12-23

申请人： CNBM RESEARCH INSTITUTE FOR ADVANCED GLASS MATERIALS GROUP CO., LTD

发明人： PENG, Shou ,  ZHANG, Chong ,  ZHAO, Fengyang ,  CUI, Jiedong ,  ZHONG, Zhaojin ,  WANG, Pingping ,  GAO, Qiang ,  WANG, Weiwei ,  HAN, Na ,  KE, Zhenkun ,  SHI, Lifen ,  YANG, Yong ,  LI, Changqing ,  ZHOU, Gang ,  CAO, Xin ,  NI, Jia ,  SHAN, Chuanli ,  LI, Jinwei

IPC分类号： C03C3/095 ,  C03C3/087 ,  C03B5/16 ,  C03B25/00

摘要： The present invention relates to a boron-free aluminosilicate glass, which is prepared from the following components in weight percentage: 57.5-68.5 wt% of SiO 2 , 14.5-21.5 wt% of Al 2 O 3 , 9.5-15.5 wt% of R 2 O, 3.5-8 wt% of RO, 0.02-0.25 wt% of Yb 2 O 3 , 0.05-0.45 wt% of SrCl 2 , 0.02-0.40 wt% of SnO 2 , and 0.05-0.60 wt% of Na 2 SO 4 , wherein the Al 2 O 3 /(Al 2 O 3 +SiO 2 ) 2 O is a mixture of two or more of Li 2 O, Na 2 O and K 2 O, and the ratio of Li 2 O to the total mass of R 2 O is 0.1-0.3; RO is one or two of CaO and MgO, and the ratio of MgO to the total mass of RO is greater than 0.6; the mass ratio of Yb 2 O 3 to SrCl 2 is 1:1.5-3; and the mass ratio of SnO 2 to Na 2 SO 4 is 1:1-2. The present invention has the advantages that bubbles larger than 0.1 mm in the glass melting process are invisible so that the prepared glass has an elastic modulus greater than 83 GPa, a strain point greater than 650°C, a density less than 2.55 g/cm3, and a transmittance greater than or equal to 91.55% at 550 nm.