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1. 发明公开

EP2842919A1 NON-ALKALI GLASS AND METHOD FOR PRODUCING SAME 审中-公开
标题翻译：非碱性玻璃及其制造方法
公开(公告)号：EP2842919A1
公开(公告)日：2015-03-04
申请号：EP13780817.6
申请日：2013-04-24
申请人： Asahi Glass Company, Limited
发明人： TOKUNAGA Hirofumi , URATA Shingo , KOIKE Akio , NISHIZAWA Manabu , ENOMOTO Takashi , TSUJIMURA Tomoyuki
IPC分类号： C03C3/112 , C03B1/00 , C03B5/225
CPC分类号： C03C3/112 , C03B1/00 , C03C3/087 , C03C3/091 , C03C3/118 , Y02P40/57
摘要： The present invention relates to a non-alkali glass having a strain point of 710°C or higher, an average thermal expansion coefficient at from 50 to 300°C of from 30×10 -7 to 43x 10 -7 /°C, a temperature T 2 at which glass viscosity reaches 10 2 dPa·s of 1,710°C or lower, a temperature T 4 at which the glass viscosity reaches 10 4 dPa·s of 1,320°C or lower, containing, indicated by percentage by mass on the basis of oxides, SiO 2 58.5 to 67.5, Al 2 O 3 18 to 24, B 2 O 3 0 to 1.7, MgO 6.0 to 8.5, CaO 3.0 to 8.5, SrO 0.5 to 7.5, BaO 0 to 2.5 and ZrO 2 0 to 4.0, containing Cl in an amount of from 0.15 to 0.35% by mass, F in an amount of from 0.01 to 0.15% by mass and SO 3 in an amount of from 1 to 25 ppm and having a β-OH value of the glass of from 0.15 to 0.45 mm -1 , in which (MgO/40.3)+(CaO/56.1)+(SrO/103.6)+(BaO/153.3) is from 0.27 to 0.35, (MgO/40.3)/((MgO/40.3)+(CaO/56.1)+(SrO/103.6)+(BaO/153.3)) is 0.40 or more, (MgO/40.3)/((MgO/40.3) +(CaO56.1)) is 0.40 or more, and (MgO/40.3)/((MgO/40.3) +(SrO/103.6)) is 0.60 or more.
摘要翻译：本发明涉及应变点为710℃以上，50℃〜300℃的平均热膨胀系数为30×10 -7〜43×10 -7 /℃的无碱玻璃，玻璃粘度达到102dPa·s时的温度T2为1710℃以下，玻璃粘度达到104dPa·s时的温度T4为1320℃以下，以氧化物基准的质量％表示，SiO 2 58.5〜67.5，Al 2 O 3 18〜24，B 2 O 3 0〜1.7，MgO 6.0〜8.5，CaO 3.0〜8.5，SrO 0.5〜7.5，BaO 0〜2.5，ZrO 2 0〜4.0， 0.35质量％，F为0.01〜0.15质量％，SO 3为1〜25ppm，玻璃的β-OH值为0.15〜0.45mm -1，其中（（MgO / 40.3）+（（MgO / 40.3）+（CaO / 56.1）+（SrO / 40.3）+（CaO / 56.1）+（SrO / 103.6）+（BaO / 153.3）为0.27-0.35。（MgO / 40.3）/（（MgO / 40.3）+（CaO56.1））为0.40以上，（MgO / 40.3）/（（MgO / 40.3）） +（SrO / 103.6））为0.60以上。

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