, ETFE, a fluorine based plastic
, was designed to have high corrosion resistance and strength over a wide temperature range. ETFE is a polymer
, and its systematic name is poly(ethylene-co-tetrafluoroethylene)
. ETFE has a very high melting temperature, excellent chemical, electrical and high energy radiation resistance properties. When burned ETFE releases hydrofluoric acid
Chemical, mechanical, physical, and thermal properties
Useful comparison tables of PTFE
and ETFE can be found on DuPont's website, listing the mechanical, thermal, chemical, electrical and vapour properties of each, side by side.
ETFE is effectively the high strength version of the other three in this group, often featuring slightly diminished capacities in other fields by comparison.
Combustion of ETFE occurs in the same way as a number of other fluoropolymers
, in terms of releasing hydrofluoric acid (HF). HF is extremely corrosive, and so appropriate caution must be exercised.
Compared to glass, ETFE film is 1% the weight, transmits more light and costs 24% to 70% less to install. It's also resilient (able to bear 400 times its own weight, self-cleaning (due to its nonstick surface) and recyclable. On the other hand it is prone to punctures by sharp edges, therefore it is mostly used for roofs. In sheet form as commonly employed for architecture, it is able to stretch to three times its length without loss... Read More