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  2. Polytetrafluoroethylene - Wikipedia

    en.wikipedia.org/wiki/Polytetrafluoroethylene

    Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene, and has numerous applications because it is chemically inert. [3] The commonly known brand name of PTFE-based composition is Teflon by Chemours , [ 4 ] a spin-off from DuPont , which originally invented the compound in 1938. [ 4 ]

  3. List of synthetic polymers - Wikipedia

    en.wikipedia.org/wiki/List_of_synthetic_polymers

    Teflon: Polytetrafluoroethylene (PTFE) Very low coefficient of friction, excellent dielectric properties, high melting, chemically inert: Plain bearings, gears, non-stick pans, etc. due to its low friction. Used as a tubing for highly corrosive chemicals. Ultem: Polyimide: Heat,flame and solvent resistant. Has high dielectric strength

  4. Polychlorotrifluoroethylene - Wikipedia

    en.wikipedia.org/wiki/Polychlorotrifluoroethylene

    PCTFE is a homopolymer of chlorotrifluoroethylene (CTFE), whereas PTFE is a homopolymer of tetrafluoroethylene. The monomers of the former differs from that of latter structurally by having a chlorine atom replacing one of the fluorine atoms. Hence each repeating unit of PCTFE have a chlorine atom in place of a fluorine atom.

  5. Fluoropolymer - Wikipedia

    en.wikipedia.org/wiki/Fluoropolymer

    In 1938, polytetrafluoroethylene (DuPont brand name Teflon) was discovered by accident by a recently hired DuPont Ph.D., Roy J. Plunkett. While working with tetrafluoroethylene gas to develop refrigerants, he noticed that a previously pressurized cylinder had no pressure remaining. In dissecting the cylinder, he found a mass of white solid in a ...

  6. Rulon (plastic) - Wikipedia

    en.wikipedia.org/wiki/Rulon_(plastic)

    Rulon 1439, white, FDA compliant for use in submerged applications with low wear characteristics; Rulon A has a 1000 fold increase in wear resistance as compared to PTFE. However, it machines much like PTFE. It can also be moulded, extruded, skived, stamped, and hot and cold formed. Below is a table of properties pertaining to Rulon AR, but ...

  7. Tetrafluoroethylene - Wikipedia

    en.wikipedia.org/wiki/Tetrafluoroethylene

    A convenient, safe method for generating TFE is the pyrolysis of the sodium salt of pentafluoropropionic acid: [6]. C 2 F 5 CO 2 Na → C 2 F 4 + CO 2 + NaF. The depolymerization reaction – vacuum pyrolysis of PTFE at 650–700 °C (1,200–1,290 °F) in a quartz vessel – is a traditional laboratory synthesis of TFE.

  8. 6 Big Shakeups Coming to Social Security in 2025 - AOL

    www.aol.com/6-big-shakeups-coming-social...

    Nearly 72.88 million Americans rely on Social Security for monthly income. The vast majority, about 65.5 million, collect Social Security benefits. Another 4.88 million receive Supplemental ...

  9. ETFE - Wikipedia

    en.wikipedia.org/wiki/ETFE

    This is because ETFE has better mechanical toughness than PTFE. In addition, ETFE exhibits a high-energy radiation resistance and can withstand moderately high temperatures for a long period. Commercially deployed brand names of ETFE include Tefzel by DuPont, Fluon by Asahi Glass Company, Neoflon ETFE by Daikin, and Texlon by Vector Foiltec.