Polytetrafluoroethylene
Polytetrafluoroethylene (pronunciation: /ˌpɒliˌtɛtrəˌfluːrəʊˈɛθiːliːn/), often abbreviated as PTFE, is a synthetic fluoropolymer of tetrafluoroethylene. It is a high-performance plastic known for its non-stick properties, as well as its resistance to heat, chemicals, and electrical conductivity.
Etymology
The term "Polytetrafluoroethylene" is derived from the Greek word "poly" meaning many, "tetra" meaning four, and "fluoroethylene", which is a type of fluorocarbon. The term was first used in the 1940s when the material was developed by DuPont.
Properties
PTFE is most well-known for its non-stick properties, which make it useful in applications such as non-stick cookware and slide plates. It also has excellent dielectric properties, high heat resistance, and good chemical resistance. These properties make it useful in a wide range of industrial applications, including seals, gaskets, and linings.
Applications
Due to its unique properties, PTFE is used in a wide range of applications. These include:
- Non-stick cookware: PTFE is the material used to create the non-stick surface in cookware such as frying pans.
- Electrical insulation: Due to its excellent dielectric properties, PTFE is often used as an insulator in wiring and in the manufacture of printed circuit boards.
- Medical devices: PTFE is used in a variety of medical devices, including catheters and sutures, due to its biocompatibility and low friction properties.
Health and Safety
While PTFE is generally considered safe for use in many applications, there are some health and safety considerations. When overheated, PTFE can release fumes that are harmful if inhaled. This is most commonly a concern with non-stick cookware.
See Also
External links
- Medical encyclopedia article on Polytetrafluoroethylene
- Wikipedia's article - Polytetrafluoroethylene
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