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ETFE 熱塑性氟塑料
Categories: | Polymer;Thermoplastic;Fluoropolymer;ETFE/ECTFE
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Material Notes: | DuPont™ Tefzel ® 207 fluoropolymer is a special-purpose resin available in translucent, 2.5 mm (0.1 in) pellets. Compared with other grades of Tefzel ®, it has a higher flow rate but still maintains a service temperature of 150°C (302°F). Tefzel ® 207 and the other Tefzel ® fluoropolymers are melt processible, modified copolymers of ethylene and tetrafluoroethylene. They are high-performance resins that can be processed at relatively high rates compared with fluorocarbon resins. They are mechanically tough and offer an excellent balance of properties. The relatively high flow rate (see Table 1) of Tefzel ® 207 makes it uniquely suitable for high-speed processing, especially for extruded coatings and injection molding of slender, thin-walled or intricate shapes. Properly processed products made from neat Tefzel ® 207 are inert to most solvents and chemicals, hydrolytically stable, and weather resistant. Recommended upper service temperature is 150°C (302°F); useful properties are retained at cryogenic ranges. The level and stability of dielectric properties are excellent and the flame rating is V-0 by the UL94 method. Mechanical properties include outstanding impact strength, cut-through, and abrasion resistance. Statements, or data, regarding behavior in a flame situation are not intended to reflect hazards presented by this or any other material when under actual fire conditions. Applications Tefzel ® 207 is ideal for many end products, including electrical components such as sleeving, coil forms, sockets, connectors, and switches; lab ware such as tubing, valves, containers, and fasteners; battery or instrument components that require chemical inertness; and mechanical parts. The high melt flow rate of this product makes it ideal for injection molding and thin wall extrusion.
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Key Words: | Ethylene Tetrafluoroethylene Copolymer; DuPont Fluoroproducts |
Specific Gravity | 1.70g/cc | 1.70g/cc | ASTM D792 | ||
Water Absorption | 0.00700 % | 0.00700 % | 24 hours; ASTM D570 | ||
Hardness, Shore D | 72 | 72 | ASTM D2240 | ||
Tensile Strength, Ultimate | 40.0MPa | 5800psi | ASTM D3159 | ||
Elongation at Break | 300 % | 300 % | ASTM D3159 | ||
Flexural Modulus | 1.00GPa | 145ksi | ASTM D790 | ||
Coefficient of Friction | 0.300 - 0.400 | 0.300 - 0.400 | ASTM D1894 | ||
Izod Impact, Notched | NB | NB | ASTM D256 | ||
Volume Resistivity | >=1.00e+17ohm-cm | >=1.00e+17ohm-cm | ASTM D257 | ||
Surface Resistivity per Square | >=1.00e+15ohm | >=1.00e+15ohm | ASTM D257 | ||
Dielectric Constant | 2.60 - 2.80 @Frequency 1e+6 Hz | 2.60 - 2.80 @Frequency 1e+6 Hz | ASTM D150 | ||
Dielectric Strength | 66.92914kV/mm @Thickness 0.250 mm | 1700.000kV/in @Thickness 0.00984 in | ASTM D149 | ||
Dissipation Factor | 0.00900 @Frequency 1e+6 Hz | 0.00900 @Frequency 1e+6 Hz | ASTM D150 | ||
Arc Resistance | 122sec | 122sec | ASTM D495 | ||
Melting Point | 267°C | 513°F | ASTM D3418 | ||
Maximum Service Temperature, Air | 150°C | 302°F | |||
Flammability, UL94 | V-0 | V-0 | |||
Oxygen Index | 30.0 - 32.0 % | 30.0 - 32.0 % | Limiting Oxygen Index; ASTM D2863 | ||
Drying Temperature | 302-323°C | 576-613°F | Cure Temperature | ||
20% Hydrochloric Acid Transmission, g/100sq in. | <0.02 | ||||
50% Sodium Hydroxide Transmission, g/100sq in. | <.02 | ||||
Acetic Acid Transmission, g/100sq in. | 0.41 | ||||
Acetone Transmission, g/100sq in. | 0.95 | ||||
Acetophenone Transmission, g/100sq in. | 0.5 | ||||
Benzene Transmission, g/100sq in. | 0.64 | ||||
Carbon Tetrachloride Transmission, g/100sq in. | 0.31 | ||||
Chemical/Solvent Resistance | Excellent | ||||
Ethyl Acetate Transmission, g/100sq in. | 0.76 | ||||
Folding Endurance, # cycles, .18-.20 mm | 10-27 E3 | ||||
Heat of Combustion J/g | 13700 | ASTM D240 | |||
Hexane Transmission, g/100sq in. | 0.56 | ||||
Piperidine Transmission, g/100sq in. | 0.04 | ||||
Red Fuming Nirtric Acid Transmission, g/100sq in. | 7.5-1.4 | ||||
Salt Spray Resistance on aluminum, Hours | 1000 | ||||
Sulfuric Acid Transmission, g/100sq in. | 0.00001 | ||||
Water Transmission, g/100sq in. | 0.4 | ||||
Weather Resistance | 15 | Years unaffected in Florida Exposure |
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