Prediction of the viscosities of ""soda-lime"" silica glasses

Publis he d data a re used to deve lop fa c tors for predic ti ng the viscos it y-te mpe rature re la tion s hip from th e compos iti ons of "soda-lim e" t ype silicate glasses at s pec ifi c t e mpe ratures in th e range of 600 t o 1300 0c. Th e effec ts of Na2 0. K, O . CaO. MgO. AI, O" an d th eir int e rac tion s a re eva luat ed. Th e in -Auenee of min or amoun ts of Ba O . B,O". Li,O. and F,. in th e te mpe ra ture range of 700 to 13 00 C , is es tim ated.