| 摘要 |
<p>The present invention provides an alkali aluminosilicate glass having an working point lower than 1200°C (104 dPas), and a transition temperature Tg lower than 610°C, comprising: based on the percentage by weight, 51 -63% of Si02; 5-18% of Al203; 8-16% of Na20; 0-6%of K20; 3.5-10% of MgO; 0-5% of B203; 0-4.5% of Li20; 0-5% of ZnO; 0-8% of CaO; 0.1 -2.5% of Zr02; 0.01 -2; 0-0.5% of F2; 0.01 -0.5% of Sn02; 0-3% of BaO; 0-3% of SrO; 0-0.5% of Yb203; wherein the sum of Si02+Al203 is 63-81 %, and the sum of CaO+MgO is 3.5-18%, and the ratio of Na20/(l_i20+Na20+K20) is 0.4-1.5. The glass is environmentally friendly and free of As203 and Sb203. The glass can be readily manufactured at a lower cost and is suitable to be chemically toughened through ion exchange. The glass has high chemical stability, high impact strength and high hardness, and is suitable for 3D precision molding and thermal bending. The glass can be used as a cover plate or a substrate glass of a touch panel. The glass is also suitable to be used as an electronic substrate.</p> |
