Description:
Tefzel ETFE HT-2183 is a premium fluoroplastic resin available in translucent, 2.5-mm (0.1-in) pellets. Compared with other grades of Tefzel , its most unique features are a greatly enhanced flex life and resistance to environmental stress. Tefzel ETFE HT-2183 and the other Tefzel fluoroplastics are melt processible, modified copolymers. They are high-performance resins that can be processed at relatively high rates, compared with other fluorocarbon resins. They are mechanically tough and offer an excellent balance of properties. Table 1 shows typical property data for Tefzel ETFE HT-2183.
Typical Applications:
Tefzel ETFE HT-2183 is ideal for many end products, including chemical service items, such as lined valves and fittings, pump housings and impellers, column packings, and other abrasionresistant linings; high temperature electrical components and insulation; fasteners, corrugated tubing, and duct work; and film.
Processing
Tefzel ETFE HT-2183 can be processed by conventional melt-extrusion techniques and injection, compression, transfer, and blow-molding processes. Compared with other grades of Tefzel, processing will be at a slower rate; thus, permitting the use of pressure extrusions through narrow dies without requiring appreciable drawdown. Reciprocating screw injection molding machines are preferred. Corrosion-resistant metals should be used in contact with molten resin. Extruder barrels should be long, relative to diameter, to provide residence time for heating the resin to approximately 340 °C (640 °F).
Storage and Handling
The properties of Tefzel ETFE HT-2183 are not affected by storage time. Ambient storage conditions should be designed to avoid airborne contamination and formation of water on the resin when it is removed from containers.
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