Resin
Teflon® PFA is a perfluoroalkoxy copolymer resin available in pellet or powder. Teflon® PFA combines the processing ease of conventional thermoplastic resins with the excellent properties of Teflon® polytetrafluoroethylene (PTFE). Products manufactured from Teflon® PFA can offer continuous service temperatures up to 260°C (500°F). What's more, Teflon® PFA provides superior creep resistance at high temperatures, excellent low-temperature toughness, and exceptional flame resistance.
Teflon® PFA fluoropolymer resins are processed by conventional melt-extrusion techniques and by injection, compression, rotational, transfer, and blow-molding processes. The high melt strength and heat stability of these resins permit the use of relatively large die openings and high-temperature draw-down techniques, which increase processing rates. Reciprocating screw injection molding machines are recommended. Corrosion-resistant metals should be used in contact with the molten resin. Long extruder barrels, relative to diameter, are used to provide residence time for heating the resin to 316° to 427°C (600° to 800°F).
| Teflon® PFA Grade |
General Purpose |
Applications |
340
[.pdf] |
Extrusion and injection molding resin. Highest flow rate. Lowest molecular weight. |
Tubing Injection or blow-molded articles Chemical linings (tanks, pipes, valves, pumps) |
345
[.pdf] |
Extrusion and injection molding resin. Intermediate flow rate with higher stress crack resistance than 340. |
Tubing Injection- or blow-molded articles Chemical linings |
350
[.pdf] |
High molecular weight resin with highest resistance to stress cracking. Lowest flow rate of this series of resins for extrusion and transfer molding. |
Films Chemical tank linings Molded articles Tubing |
| Teflon® PFA Grade |
Ultrahigh Purity |
Applications |
440 HP
[.pdf] |
Premium resin with the lowest level of extractables designed to meet ultrahigh purity requirements. Highest flow rate for injection molding and extrusion processes. FDA food contact compliance. Highest level of inertness due to stable end group polymer structure. |
Fluid handling components for critical, high-purity processes like semiconductor, pharmaceutical, and biotechnology |
445 HP
[.pdf] |
Premium resin designed to meet ultrahigh purity requirements with enhanced resistance to stress cracking. For extrusion, injection, and transfer molding. FDA food contact compliance. |
Fluid handling components for critical, high-purity processes like semiconductor, pharmaceutical, and biotechnology |
450 HP
[.pdf] |
Premium high molecular weight resin designed to meet ultrahigh purity requirements. Highest level of stress crack resistance. For extrusion and transfer molding processes. FDA food contact compliance. |
Fluid handling components for critical, high-purity processes like semiconductor, pharmaceutical, and biotechnology |
940 HP Plus
[.pdf] |
Special-purpose resin with the exceptional purity of PFA 440 HP, with improved flex life and chemical stress crack resistance. |
Applications requiring low extractable fluorides and freedom from other foreign materials Molded parts Tubing |
950 HP Plus
[.pdf] |
Special-purpose resin with exceptional purity. Similar to PFA 450 HP, with improved flex life and chemical stress crack resistance. |
Applications requiring low extractable fluorides and freedom from other foreign materials. |
| Teflon® PFA Grade |
Special Purpose |
Applications |
C
[.pdf] |
Special-purpose compounded resin to provide static dissipation. Several viscosity grades available for a variety of molding processes. |
Applications requiring static dissipation along with thermal or chemical resistance |
335A
[.pdf] |
Aqueous dispersion containing 60%, by weight, Teflon® PFA particles. |
High-temperature, chemical-resistant coatings |
Film
DuPont™ Teflon® PFA film is a transparent, thermoplastic film that can be heat sealed, thermoformed, vacuum formed, heat bonded, welded, metallized, laminated (combined with dozens of other materials), and used as an excellent hot-melt adhesive.
This wide variety of fabrication possibilities combines with important properties [.pdf] to offer a unique balance of capabilities not available in any other plastic film.
New Permeation Resistant Grade Teflon® PFA HP Plus Fluoropolymer Resin
DuPont Fluoroproducts announced the introduction of a new grade of permeation resistant DuPont™ Teflon® PFA HP Plus. The new resin, Teflon® PFA 951HP Plus, is designed for molding and extrusion for fluid handling components and tubing.
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A New Generation of PFA Fluoropolymers and Components for Fluid Handling Systems
Learn the story about the development and evolution of the unique chemical and morphological structure of Teflon® PFA HP Plus, and the performance attributes that make this the polymer of choice for applications in Semiconductor Manufacturing.
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