| 摘要 |
<p>An aluminosilicate glass for touch screen is provided. The glass consists of (in wt.%): 55-65% silica, 12<-17% sodium oxide, 15<-20% alumina, 2-6% potassium oxide, 3.9-10% magnesia, 0-5% zirconia, 0-4% zinc oxide, 0-4% calcium oxide, 15-28% sodium oxide + potassium oxide + magnesia + zinc oxide + calcium oxide, 0-1% stannic oxide, no more than 1% titanium dioxide + cerium oxide. And a chemical strengthening method is provided, which comprises dipping the glass in a salt bath of 100% KNO3 for strengthening ion exchange, preheating the glass at a temperature between 370? and 430 ? for 0.5-16h. The said glass can be used for substrate and cover sheet of the touchpad.</p> |
