Ethylene-chlorotrifluoroethylene ECTFE

Examples of fluoroplastics include polytetrafluoroethylene (PTFE), fluorinated ethylene propylene (FEP), ethylene—chlorotrifluoroethylene (ECTFE), ethylene—tetrafluoroethylene (ETFE), poly(vinylidene fluoride) (PVDF), etc (see Fluorine compounds, organic). These polymers have outstanding electrical properties, such as low power loss and dielectric constant, coupled with very good flame resistance and low smoke emission during fire. Therefore, in spite of their relatively high price, they are used extensively in telecommunication wires, especially for production of plenum cables. Plenum areas provide a convenient, economical way to run electrical wires and cables and to interconnect them throughout nonresidential buildings (14). Development of special flame-retardant low smoke compounds, some based on PVC, have provided lower cost competition to the fluoroplastics for indoors application such as plenum cable, Riser Cables, etc. 

Ethylene chlorotrifluoroethylene (ECTFE) has a thermal stability comparable to ETEE [13] and can be stabilized by the addition of an ionomer, which considerably reduces dehydrofluorination and dehydrochlorination reactions and suppresses the discoloration of the polymer [14],... 

There are a number of other polymers in this family including polychlorotrifluoroethylene (PCTFE), polyvinyl fluoride (PVF), polyvinylidene fluoride, ethylene chlorotrifluoroethylene (ECTFE), tetrafluoroethylene/hexafluoropropylene/vi-nylidene fluoride terpolymers, and chlorotrifluo-roethylene/vinyl ether copolymers. 

Table 4.16. Chemical Compatibility of Ethylene Chlorotrifluoroethylene (ECTFE) Copolymerl °l...

Perfluoroalkoxyethylene Ethylene-tetrafluoroethylene Ethylene-chlorotrifluoroethylene (ECTFE)... 

Ethylene chlorotrifluoroethylene (ECTFE) is an alternating copolymer of chlorotrifluoroethylene and ethylene. It has better wear properties than PTFE along with good flame resistance. Applications include wire and cable jackets, tank linings, chemical process valve and pump components, and corrosion-resistant coatings. ... 

Ethylene Chlorotrifluoroethylene (ECTFE) D3275 ECTFE-Fluoroplastic Molding, Extrusion, and Coating Materials... 

Properties used in the characterization of ethylene chlorotrifluoroethylene (ECTFE) polymers are defined in Table 5.75. ASTM Method D3275 classifies the different types of ECTFE according to the specifications summarized in Table 5.76. 

Table 6.19. Properties of Ausimont Ethylene Chlorotrifluoroethylene (ECTFE) Polymers i...

Other melt-processable fiuoroplastics include ethylene-chlorotrifluoroethylene (ECTFE) copolymer (melting point 240°C), polyvinylidene fluoride (PVDF) (melting point 170°C), and polyvinyl fluoride (PVF), which is commercially available only as film. 

Flame treatment is not effective in the adhesion treatment of perfluoio-plastics. The data in Table 3.5 reveal a large increase in the bond strength of polyvinyl fluoride (PVF) and ethylene chlorotrifluoroethylene (ECTFE) after flame treatment. The fluorine-to-carbon OF/V) ratio of PVF remained unchanged but the 0/C ratio increased significantly. In the case of PTFE, the F/C ratio actually increased, which could explain the drop in the bond strength as a result of flame treatment The flame most likely removed contamination that had previously masked some of the F atoms on the surface. 

The search for new membrane materials is of peculiar interest to carry out organic/ organic separations. When the feed contains particularly aggressive solvents, it is necessary to find membrane materials that are able to withstand such harsh environments. Simone et al. [122] prepared asymmetric dense membranes using a copolymer of ethylene chlorotrifluoroethylene (ECTFE), commercialized by Solvay Advanced Polymers as Halar . ECTFE represents an exceptionally promising material for... 

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