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Operational Classification of Fluoropolymers

Abstract

The discovery of polytetrafluoroethylene (PTFE) led to major opportunities to solve industrial material problems and advance the state of technology. For instance, costly exotic metals could be replaced with an economically viable plastic. However, a host of processing problems had to be solved before these opportunities could be realized. At the outset, PTFE proved impossible to process, it does not dissolve in solvents, its melting point is high and after melting, PTFE's viscosity is so high that it would not flow at all. A new processing method had to be found to accommodate PTFE's unique properties, and this was achieved by borrowing technology from an unlikely place, the powdered metal ...

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