Polyfluorocarbons corrosion resistance

Polyfluorocarbons are resistant to heat, solvent, and corrosives. The resistance is greatest in the regularly structured PTFE and decreases as the geometry is upset by substitution of other atoms for fluorine. 

Since PVG hdpe, and polyesters are resistant to most nonoxidizing corrosives and are less expensive and more readily processed than the polyfluorocarbons, they may be used in many instances as corrosion-resistant polymers. 

In contrast, Roy spent his entire career (39 years) with DuPont and was recognized as being the first to demonstrate the production of polyfluorocarbons. Dr. Plunkett in cooperation with Jack Rebok discovered solid polytetrafluorethylene (Teflon) in a cylinder which had been filled with gaseous tetrafluorethylene. This discovery, not only provided an unusually heat and corrosion resistant product but also paved tive way for the development of many other polyfluorocarbons. 

PTFE is resistant to solvents, oxidizing acids, nonoxidizing acids, alkalis, and aqueous salt solutions. Other polyfluorocarbons, such as polyvinylidene fluoride (PVDF), are slightly less resistant to corrosives but are much more resistant than most other construction materials. 

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