"polyteterfluoroethylene" - 1 õppematerjal

Presentation - teflon - powerpoint

http://www.wisegeek.com/what-is-teflon.htm http://www.3dchem.com/molecules.asp?ID=200 Polytetrefluoroethylene  Words: Chain ­ ahel Serendipitously- pooljuhuslikult Resistance- vastupanu insulator-isolaator Semiconductor-pooljuht Deteriorate ­ halvenema Surface-pind Vulnerable- haavatav,nõrk Shield ­kilp, varjama Spin-off ­ kõrval saadus Polytetrefluoroethylene  Polyteterfluoroethylene(PTFE) · Background · History · Structure · Properities · Applications · 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 · Discovered on April 6, 1938 by Dr