ECTFE (Ethylene-chlorotrifluoroethylene)

ECTFE (Ethylene-chlorotrifluoroethylene)

Properties of ECTFE

• It is a copolymer of ethylene and chlorotrifluoroethylene.



• ECTFE resin is tough, medium hardness and creep resistance.
• The operating temperature is -100°C to +150°C (-148°F to +302°F).
• The melting temperature depends on the monomer ratio in the polymer and ranges from 235°C to 245°C (455°F to 473°F).
• ECTFE has excellent weather resistance.
• ECTFE can resist high-energy gamma and beta radiation up to 100 Mrad (1000 kGy).

Applications

• The largest single application of ECTFE is as the primary insulation and sheath of voice and copper cables used in building ventilation systems.
• In automotive applications, ECTFE is used for cable sheaths of liquid level sensors in fuel tanks, connecting wires and heating cables for car seats.
• In the chemical processing industry, it is commonly used in chlorine/corrosive environments in electrolytic cell covers, outlet boxes, lined pipes, and storage tanks.
• In the pulp and paper industry, ECTFE is used to line bleaching agents and scrubbers.
• Monofilaments made of ECTFE are used for chemically resistant filters and screens.
• Other applications include rotomolding tanks and containers for storing corrosive chemicals such as nitric acid or hydrochloric acid.
• ECTFE film is used as a separator in the manufacture of high-temperature composite materials for aerospace applications.
• Thanks to its resistance to most organic solvents, ECTFE membranes can be used for separation of organic/organic mixtures by pervaporation.

Figure 1. Schematic diagram of ECTFE used to separate organic/organic mixtures [1]

Reference

1. Francesco Falbo, Sergio Santoro, Francesco Galiano, Silvia Simone, Mariano Davoli, Enrico Drioli, Alberto Figoli, Polymer 98 (2016) 110e117.

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