properties
| Density | 2.46±0.03 | g/cm3 |
| Thermal Expansion Coefficient | 98.0±2 | X 10-7/°C |
| Softening Point | 829±10 | °C |
| Annealing Point | 605±10 | °C |
| Strain Point | 559±10 | °C |
| Young's Modulus | 75.7 | GPa |
| Shear Modulus | 30.6 | GPa |
| Poisson's Ratio | 0.24 | / |
| Vickers Hardness (after CS) | 700 | MPa |
| Pencil Hardness | >8H | / |
| Volume resistivity | 9.2 | lg(Ω • cm) |
| Dielectric Constant | 8.1 | F/m |
| Refraction Index | 1.51 | |
| Photo-elastic Constant | 27.1 | nm/cm/MPa |
OPTICAL CHARACTERISTICS
| Refraction Index | 1.51 | |
| Photo-elastic Constant | 27.1 | nm/cm/MPa |
Light transmission (550nm)=92.2%
Chemical resistance
| Reagent | Concentration(%) | Time | Temperature(°C) | Weight Loss (mg/cm2) |
|---|---|---|---|---|
| NaOH | 5 % | 6 h | 95±0.5 | 0.75 |
| HCl | 5 % | 24 h | 95±0.5 | 0.12 |
| HF | 10 % | 20 min | 20±0.5 | 17.18 |
Dielectric constant (15-20°C)
| Frequency (MHz) | Dielectric constant (10-12 F/m) |
|---|---|
| 0.001 | 8.20 |
| 0.01 | 7.84 |
| 0.1 | 7.89 |
| 54 | 7.82 |
| 163 | 7.71 |
| 272 | 7.65 |
| 381 | 7.60 |
| 490 | 7.58 |
| 599 | 7.55 |
| 912 | 7.43 |
| 1499 | 7.34 |
| 1977 | 7.31 |
| 2466 | 7.29 |
| 2986 | 7.26 |
