| 摘要 |
PURPOSE: Arsenic and antimony free, titanium oxide containing borosilicate glass are provided to have excellent transmission rate value within infrared ray(IR) range and no discoloration by using refining agent as selenium compound containing oxygen. CONSTITUTION: Arsenic and antimony free, titanium oxide containing borosilicate glass comprise 30-85 weight% of SiO2, 3-20 weight% of B2O2, 0-15 weight% of Al2O3, 3-15 weight% of Na2O, 3-15 weight% of K2O, 0-12 weight% of ZnO, 0.5-10 weight% of TiO2, and 0-0.1 weight% of Ca based on the total weight of the glass. The borosilicate glass comprises selenium compound containing one or more of 0.001-0.1 weight% of oxygen based on the total weight of the glass. The compound is selected from selenite, selenate, selenium dioxide(SeO2), trioxide selenium(SeO3), and the mixture. The manufacturing method of arsenic and antimony free, titanium oxide containing borosilicate glass comprises the following steps. The raw materials of the glass manufacturers are mixed. The mixture is heated up to at least 1,350-1,550 deg C to form the melt. The melt is cooled to the molding temperature, and the glass is molded. [Reference numerals] (AA) Borosilicate glass; (BB) Transmittance/%; (CC) Wavelength/nm; (DD) Comparative embodiment 1; (EE) Comparative embodiment 2; (FF) Embodiment 1 |
