Abstract
Discontineous actions of heated water on glasses A & B, so as to treat the glasses every 2hrs. after drying, weighing and titration for several times at 210°C on A glass and 100°C on B glass, are measured by surface method. Experimental results are obtained to show that the relation of cumulative weight loss (mg/cm2) to treating total time (hour) is linear but not the parabolic equation as mentioned in the previous report.
A theoritical consideration of these facts deduced that the swelled hydrosilicagel results on glass surface by the water action was shrinked by each drying irreversibly, therefore extraction of alkali from glass was followed at constant velocity.
Next experimences are performed to detect the changes of acting power of water with melting process of two glasses A & C, recognizing the irregular relation between weight decrease and melting hour.
