[. . . ] [. . . ] Thermal properties
DOCTAN
®
2. 1
Viscosity and corresponding temperatures
Description
Viscosity log in dPas
Temperature in °C 486
Strain point
14, 5
Annealing point
13, 0
537
Softening point
7, 6
723
Forming temperature
6, 0
790
Forming temperature
5, 0
884
Forming temperature
4, 0
1045
2. 2
Transformation temperature T g in °C Coefficient of thermal expansion
538
2. 3
2. 3. 1 Coefficient of mean linear thermal expansion (20°C 300 °C) in 10-6 K-1 (static measurement)
9, 3
3
Specification
Physical and chemical properties
3. Mechanical properties
DOCTAN
®
3. 1
Density in g/cm3 Chemical properties
2, 52
4.
4. 1
Hydrolytic-resistance according to DIN ISO 719
Hydrolytic class
HGB 3
Base-equivalent as Na2O per gram of glass grains in µg/g
156
4. 2
Acid-resistance according to DIN 12 116
Acid class Half reduction of surface weight after 6 hrs. in mg/dm2
S1
0, 4
4. 3
Base-resistance according to DIN ISO 695
Base class Reduction of surface weight after 3 hrs. in mg/dm2
A2
79
4
Annex Spectral transmittance
Transmittance curve, DOCTAN
100
90
80 70
Transmittance in %
60
50
40 30
20
10 0 300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
Wave length in nm
5 [. . . ] [. . . ]