What is PTFE (polytetrafluoroethylene)?
What are the advantages of cross-linked polytetrafluoroethylene?
- Cross-linked Polytetrafluoroethylene has improved high-temperature mechanical properties and radiation stability. This was significant because, for many years, irradiation at ambient conditions has been used to break down Polytetrafluoroethylene for recycling. This radiation-induced chain scission allows it to be more easily reground and reused.
What is the degree of crystallinity of PTFE?
- PTFE (degree of crystallinity, 93–98%) has a melting point of 620 K and exhibits a helical structure which undergoes unit cell transitions at 292 and 303 K. 86, 88 Below 292 K the conformation can be described by a helix containing 13 CF 2 units per 180° twist.
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