24-08-2022 | 11:51:01
Tính chất của PTFE
Properties | PTFE at 20 °C |
Physical Properties | |
Density | 2.13 – 2.23 g/cm³ |
Mechanical Properties | |
Elastic Modulus | 0.4 – 0.75 GPa |
Elongation | 350 – 550 % |
Yield Strength | 20 – 35 MPa |
Thermal Properties | |
Melting Point | 325 – 335 ℃ |
Coefficient of Thermal Expansion | 1 – 2 E-4/K |
Maximum Service Temperature | 260 ℃ |
Thermal Conductivity | 0.25 W/(m∙K) |
Specific Heat Capacity | 1000 J/(kg∙K) |
Flammability | V0 UL 94 (Flame Retardant) |
Electrical Properties | |
Dielectric Constant | 2.1 |
Dielectric Strength | 20 – 48 kV/mm |
Electrical Resistivity | 1-1000 E+15 Ω∙m |