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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] Polytetrafluoroethylene is a fluorocarbon solid , as it is a high- molecular-weight polymer consisting wholly of carbon and fluorine .
Useful comparison tables of PTFE against FEP, PFA and ETFE can be found on Chemours' website, listing the mechanical, thermal, chemical and electrical properties of each, side by side. [1] ETFE is effectively the high-strength version of the other three in this group. ETFE film is self-cleaning (due to its nonstick properties) and recyclable. [2]
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.
Fluorinated ethylene propylene was invented by DuPont and is sold under the brandname Teflon FEP. Other brandnames are Neoflon FEP from Daikin or Dyneon FEP from Dyneon/3M. FEP is very similar in composition to the fluoropolymers PTFE (polytetrafluoroethylene) and PFA (perfluoroalkoxy polymer resin). FEP and PFA both share PTFE's useful ...
Polytetrafluoroethylene (PTFE), better known by its trade name Teflon, has many desirable properties which make it an attractive material for numerous industries. It has good chemical resistance, a low dielectric constant, low dielectric loss, and a low coefficient of friction, making it ideal for reactor linings, circuit boards, and kitchen utensils, to name a few applications.
The Los Angeles City Attorney's Office filed a lawsuit this week against Blueground, a short-term rental company that advertises properties. LA lawmakers threaten landlords with fines as high as ...
FD&C Red No. 40, more commonly known as red 40, is making headlines again as lawmakers debate whether food dyes should remain legal in the United States.. The dye, which has been registered with ...
Properties of Rulon AR [3] Properties Test procedure used Value Specific gravity: ASTM D792 2.22 Hardness ASTM D2240 60 - 75 Shore D: Water absorption ASTM D570 0 Tensile strength: ASTM D4894 2,000 psi (14 MPa) Elongation ASTM D4894 175% Deformation under load 1500 psi, 24 hr, RT ASTM D621 5.0% Izod impact strength n/a 6.0 ft-lb/in (320 J/m)