물성 | 시험기준 | Unit | Pure PTFE | M-PTFE |
Tensile strength | ASTM D4894 | MPa | >23 | >25 |
Elongation at break | ASTM D4894 | % | >260 | >300 |
Specific gravity | ASTM D792 | g/cm3 | 2.14-2.19 | 2.14-2.19 |
Dielectic stength | ASTM D149 | kV/mm | >20 | >25 |
Hardness | ASTM D2240 | Shore D | 50-60 | 50-60 |
Coefficient of linear expansion | DIN 53752 | °C-1 | 15 10-5 | 15 10-5 |
Coefficient of friction | Cold-finished steel | - | <0.1 | <0.1 |
Water absorption, 24hrs | ASTM D570 | % | <0.01 | <0.01 |
Flame rating | UL94 | - | V0 | V0 |
Working temp. | - | °C | -150~260 | -200~260 |
Color | Visual | N/A | 연갈색~진갈색 | 연갈색~진갈색 |
물성 | 시험기준 | Unit | M-PTFE |
Thermal conductivity | C177 | /K | 16x10-5 (20~100°C) |
Specific heat | C177 | W/m.k | 0.25-0.5 |
Dielectic constant (60hz~10^7Hz) | D150 | - | 2.2 |
Volume resistivity | D257 | ohm.cm | >10^18 |
Surface resistivity | D257 | ohm | >10^17 |
Dielectric strength | D149 | kV/mm | 15-60 |