polytetrafluoroethylene


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Related to polytetrafluoroethylene: Teflon, Expanded Polytetrafluoroethylene

polytetrafluoroethylene

(pŏ-lē-tĕ-tră-flŏ-rō-ĕth′ĭ-lēn),

PTFE

A synthetic polymer that has slippery, nonsticking properties. It is used in a variety of products, including vascular grafts used to bypass obstructed blood vessels and grafts used for dialysis access.
References in periodicals archive ?
Polytetrafluoroethylene (PTFE), a homopolymer of tetrafluoroethylene, is a linear chain polymer of great molecular length, or a "long chain" fluorocarbon, with the chemical formula (CF2CF2)n.
Whitford Corporation has been granted a patent for a fluoropolymer composition comprised of at least one high molecular weight polytetrafluoroethylene, which has been trace modified with a modifying co-monomer (TMHPTFE) and having a number average molecular weight (Mn) of at least 500,000 and a first melt temperature (Tm) of less than 342[degrees] C.
The system employs a hydrophilic polytetrafluoroethylene (PTFE) membrane designed to be transparent in most of the infrared spectral region and enables application of biomolecule solutions directly onto the membrane.
The capabilities all build on Merit Medical Coating's polytetrafluoroethylene wire and hypotube coating platform technologies.
To modify the components were used the products of thermogasdynamic synthesis (TGD-synthesis) which are positioned by the developer as ultrafine polytetrafluoroethylene (UPTFE) and marketed under the brand name "Forum" (Institute of Chemistry, FEB RAS).
Critical applications requiring high temperature stability to filter caustic gases or fluids, such as in the semiconductor, chemical processing, and petroleum/gas industries, have traditionally used polymers such as polytetrafluoroethylene (PTFE), perfluoroalkoxy copolymer (PFA), and ethylene chlorotrifluoroethylene copolymer (ECTFE).
Quadrant Engineering Plastic Products (EPP) has delivered a step-change in durability and longevity to seals, bearings and washers used in fluid processing with the launch of advanced Polytetrafluoroethylene (PTFE) Fluorosint 135.
The key to increasing the repellency of cotton is to coat it with compounds that have low surface energy, usually fluorinated ones similar to polytetrafluoroethylene, or Teflon.
To date, most rotary micro seals available are made from Polytetrafluoroethylene (PTFE).
The firm is to launch its Torque Control Seal (TCS), D-ring with polytetrafluoroethylene (PTFE) enhancement and Friction Piston Seal T-ring (TR) 200, during MDA India.
The cartridges utilize the inherently hydrophobic expanded polytetrafluoroethylene (ePTFE) membrane, which provides the highest levels of biosecurity throughout the process industry.
In extensive Dow Corning fretting-corrosion tests, as well as customer brake dynamometer and vibration tests, the light-green grease showed superior performance over a competitor's silicone grease with PTFE (polytetrafluoroethylene) for reducing corrosion and wear in the application.