Product name:Tetrafluoroethylene-hexafluoropropylene copolymer
orFluororesin-46,FS-46
CAS NO：25067-11-2
FEP is a new crystallineperfluorocarbon polymer, a modified PTFE products, its long-term usetemperature of -80 ∽ 200 ℃, and has excellent chemical stability, outstandingthe surface is not sticky, low-temperature mechanical strength, electricalinsulation, air tightness, resistance to fold, as well as low water absorptionand coefficient of friction, exposure to life in the atmosphere of more than 40years.
Product property
The fracture strength, MPa (PSI) | 20.0-34.0(2900-4930) |
The elongation at break,% | 250-400 |
The dielectric constant (106Hz) | ≤2.15 |
Dielectric loss tangent (106Hz) | ≤7×10-4 |
Physical and chemical properties:
Melting range, °C: | 245-275 |
Melt viscosity: | 1×102 - 1×104 Pa•s |
Relative density: g/cm | 2.12-2.17 |
Working temperature range, °C: | 200 |
Decomposition temperature, °C: | ≥380 |
Specific heat capacity: | 1.17×103 J/kg • °C |
Coefficient of linear expansion: | 9.0×10-5 °C-1 |
24 hours water absorbent, %: | 0.002 |
The volume resistivity (200 ° C): | ≥6×1014 Ω•m |
Major application:
It has distinctive effect when it is usedas the cable insulation layer, especially the wire insulation layer in thecomplex electronic equipment. FEP heat shrinking pipes and films can be coveredon the rollers and other settings which have requirements on viscosity andcorrosion resistance. Now, it enjoys wide popularity in the chemical, printingand dyeing industry. FEP U-shape viscosity-resistant strips are applicable tothe sizing machine of the textile industry to prevent the chemical pulp fromsticking to the mechanical parts. They can also be used as the protection edgeof blank in the electrolytic copper field of the smelting industry. FEP pipeshave also been used as corrosive liquid and gas pipelines, lining pipes, heatexchanger tubes, and liquid level indicators.
