Effect of Al sub(2)O sub(3) on Surface Tension of the SiO sub(2)-Al sub(2)O sub(3 )-RO-R sub(2)O Glass System

This study selected high alkali aluminosilicate glass as the research object. It's belongs to the SiO sub(2)-Al sub(2)O sub(3 )-RO-R sub(2)O glass system. By changing the content of Al sub(2)O sub(3) in the SiO sub(2)-Al sub(2)O sub(3 )-RO-R sub(2)O glass system, designed five basic glass formula. Using conventional melting method prepared the high alkali aluminosilicate glass. In the case of the same heat treatment, the glass formulations are the most important factor in the glass surface tension. Using the glass surface tension measuring instrument, focus on the content of Al sub(2)O sub(3) on the glass surface tension's effects law. The results show that the high alkali aluminosilicate glass's surface tension are increase with the increase of Al sub(2)O sub(3) content. The relation between glass surface tension and the content of Al sub(2)O sub(3) conforms to the formula Y=290+6.5W sub(Al2O3), Al sub(2)O sub(3) factors influence the surface tension of the glass is 6.5.