Tefzel®ETFE

Ethylene trifluoroethylene (Tefzel) (ETFE) has good mechanical properties from cryogenic levels to 350°F (177°C). It has an upper continuous working temperature limit of 300°F (149°C). 

Tefzel ETFE (ethylenetetrafluoroethylene). This plastic is white, translucent, and slightly flexible. It is a close analog of the Teflon fluorocarbons, an ethylene tetrafluoroethylene copolymer. ETFE shares the remarkable chemical and temperature resistance of Teflon TFE and FEP and has even greater mechanical strength and impact resistance. 

Fluoropolymers. Melt processable fluoropolymers such as Teflon FEP, Tefzel ETFE, poly(vinylidene fluoride) (Kynar), and ethylene-chlorotrifluoroethylene copolymer (Halar) are suitable for wire insulation in special applications because they combine good physical properties with low flammability. They are used for instrumentation cable in process-control rooms, as well as for computer and aircraft wiring and in military applications. The... 

TEFZEL ETFE Fluoropolymer Resin, Properties Handbook, No. E-31301-5, DuPont Co., Jul. 1996. 

Figure 6.8 Increase in flow rate of Tefzel ETFE 200 with thermal exposure.

Tefzel ETFE HT2181 [DuPont http //www.dupont.com, DuPont Canada http //www.dupont.ca], Tefzel ETFE HT2183 [DuPont http //www.dupontcom, DuPont... 

Canada http //www.dupont.ca], Tefzel ETFE HT2185 [DuPont http //www.dupont.com, DuPont Canada http //www.dupont.ca], Tefzel HT-2000 t[DuPont http //www.dupont.com] DuPont Canada http //www.dupont.ca]] Tefzel HT-2010 t[DuPont http //www.dupont.com] DuPont Canada http //www.dupont.ca]... 

Tefzel ETFE 200, Tefzel ETFE 210, Tefzel ETFE280, Tefzel ETFE 750, Tefzel ETFE HT2160, Tefzel ETFE HT2181 Tefzel ETFE HT2183 Tefzel ETFE HT2185 Tefzel HT-2000 Tefzel HT-2010, Tefzel HT-2020, Tefzel LZ. See Ethylene/tetrafluoroethylene copolymer... 

Figure 9.31 Stress vs. strain in compression at 23°C for DuPont Tefzel ETFE resins [7].

A copolymer of ethylene and tetrafluor-oethylene (DuPont Tefzel ), ETFE is readily processed by extrusion and injection molding. It has excellent resistance to heat, abrasion, chemicals, and impact, with good electrical properties. 

Ethylene-tetrafluoroethylene copolymer (Tefzel/ETFE) is structurally similar to Teflon, possessing also a high chemical resistance. This material has proved excellent for sealing surfaces and in applications involving aggressive solvents. Tefzel is also used in threaded materials, particularly in low-voltage lines and adapters. However, the polymer can be degraded or swollen by chlorinated solvents. 

The remarkable properties of "TEFZEL" ETFE are best illustrated by comparison with the isomeric polydifluoroethylene. This difference can be thought of as the result of a difference in repeat unit structure. In fact, there is a remarkable similarity between ETFE and poly-1, 1, 4, 4-tetrafluorobutadlene in both chemical and physical properties, including nearly identical crystalline melting points. 

It is an alternating copolymer of ethylene and tetrafluorethylene sold by DuPont under the tradename Tefzel. ETFE is weather-resistant and UV-re-sistant with an operating temperature range of —370 to 300°F (—223 to 149 C). It is also inert to normal atmospheric pollutants. 

The high transparency of those fluoropolymers is shown in Figure 17.3 where the UV-Vis spectra of HALAR ECTFE and TEFZEL ETFE is compared to glass... 

Table 6.29. Dimensional Characteristics of Oriented Tefzel ETFE Films (P) made by DuPont ...

DuPont High Performance Films, T Films of Teflon PFA and Tefzel ETFE, DuPont Co., Wilmington, DE, Publication No. H-04323-1, Dec. 1998. 

Figure 11.17 Flexural stress amplitude versus cycles to failure at 23°C, 50% relative humidity, and 1800 Hz of two Chemours Tefzel ETFE plastics [10],...

Table 5.14 shows the results of scrape abrasion testing on a Tefzel ETFE (www2.dupont.com) insulation with and without plasma treatment. Clearly, plasma has a positive effect on enhancing resistance of the marking to removal by scrape abrasion. Contact angle data and calculated surface energy data can be found in Tables 5.15 and 5.16. 

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