The present invention relates to a borosilicate glass containing, in mol% on the basis of oxides, 70.0% < = SiO2 < = 85.0%, 5.0% < = B2O3 < = 20.0%, 0.70% < = Al2O3 < = 10.0%, 0.0% < = Li2O < = 5.0%, 0.0% < = Na2O < = 10.0%, 0.0% < = K2O < = 5.0%, 0.0% < = MgO < = 5.0%, 0.0% < = CaO < = 5.0%, 0.0% < = SrO < = 5.0%, and 0.10% < = Fe2O3 < = 1.0%, the total amount of SiO2, Al2O3, and B2O3 being 85.0% or more, and the total amount of SiO2, Al2O3, and B2O3 being 0.5% or more. The borosilicate glass substantially does not contain BaO, PbO, and As2O3, and when the plate glass is bent by heating at a temperature of T12 or more at which the glass viscosity reaches 1012 [dPa.s], Tb [%] is the average transmittance of light having a wavelength of 900-1300 nm when the plate glass is converted to 1.50 mm, the average transmittance of light having a wavelength of 900-1300 nm is less than Tb [%], and the average transmittance of light having a wavelength of 900-1300 nm is less than Tb [%] when the plate glass is bent by heating at a temperature of T12 or more at which the glass viscosity reaches 1012 [dPa.s]. When Ta [%] is the average transmittance of light having a wavelength of 900 nm to 1300 nm when the thickness is converted to 1.50 mm, Tb-Tagt is satisfied; 0.
本发明涉及一种硼硅酸盐玻璃,其中,以氧化物基准的摩尔%计,所述硼硅酸盐玻璃包含:70.0%≤SiO2≤85.0%、5.0%≤B2O3≤20.0%、0.70%≤Al2O3≤10.0%、0.0%≤Li2O≤5.0%、0.0%≤Na2O≤10.0%、0.0%≤K2O≤5.0%、0.0%≤MgO≤5.0%、0.0%≤CaO≤5.0%、0.0%≤SrO≤5.0%、和0.10%≤Fe2O3≤1.0%,SiO2、Al2O3和B2O3的总量为85.0%以上,所述硼硅酸盐玻璃实质上不包含BaO、PbO和As2O3,对于平板玻璃而言,把将所述平板玻璃的厚度换算为1.50mm时的波长900nm~1300nm的光的平均透射率设为Tb[%],把将所述平板玻璃在玻璃粘度达到1012[dPa·s]时的温度T12以上的温度进行加热并弯曲了的情况下,在将厚度换算为1.50mm时的波长900nm~1300nm的光的平均透射率设为Ta[%],此时,满足Tb‑Ta>0。
Borosilicate glass
硼硅酸盐玻璃
2024-06-07
Patent
Electronic Resource
Chinese
IPC: | C03C Chemische Zusammensetzungen für Gläser, Glasuren oder Emails , CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / C03B Herstellung oder Formgebung von Glas, Mineral- oder Schlackenwolle , MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL |
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