Glass Sample | The various compositions of glass (mol%) | [O/P] | (Dr) (g/cm2/mn) | Log(Dr) | |||
P2O5 | Na2O | CaO | Al2O3 | --------------- | 20 days | -------------- | |
S050 | 50 | 10 | 40 | 0 | 3 | 3.82 × 10−7 | −6.42 |
S550 | 50 | 10 | 35 | 5 | 3.1 | 6. 60 × 10−7 | −6.18 |
S7.550 | 50 | 10 | 32.5 | 7.5 | 3.15 | 1.25 × 10−6 | −5.90 |
S1050 | 50 | 10 | 30 | 10 | 3.2 | 1.07 × 10−5 | −4.97 |