Presentation - teflon - powerpoint
Semiconductor-pooljuht
Deteriorate halvenema
Surface-pind
Vulnerable- haavatav,nõrk
Shield kilp, varjama
Spin-off kõrval saadus
Polytetrefluoroethylene
Polyteterfluoroethylene(PTFE)
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Background
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History
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Structure
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Properities
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Applications
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Safety
Polytetrefluoroethylene
PTFE-Teflon
Synthetic fluoropolymer of tetrafluoroethylene
Plastic with the good properities
Is most well known by the DuPont brand
name Teflon.
Polytetrefluoroethylene
History
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Discovered on April 6, 1938 by Dr. Roy Plunkett
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First marketed under the DuPont Teflon ® trademark in 1945.
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Dupont got partnership with General Motors
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In 1954, French engineer Marc Grégoire created the first pan
coated with Teflon
annaabi.ee 
