Polytetrafluoroethylene, PTFE, or Teflon® as it is often referred to, is a tough, ductile material with excellent thermal properties and outstanding resistance to chemicals and the passage of electric current. PTFE has an exceptionally low coefficient of friction, believed to be lower than any other solid.
While plastics are high molecular weight organic polymers composed of various elements such as carbon, hydrogen, oxygen, nitrogen, sulphur and chlorine, Polytetrafluoroethylene (PTFE) is just made up of fluorine and carbon atoms. This dramatically changes the property of the material and PTFE, like other fluoroplastics, has distinctive properties.
PTFE, however also has some limitations in its applications.
One of the common PTFE uses is non-stick coating in kitchen cookware (pans, baking trays, etc.). PTFE is also used as a cost-effective solution for chemical processing, oil & gas, industrial, semiconductor, and construction sectors.
PTFE has a very high-melt viscosity and a high-melting temperature which makes traditional processing methods difficult.
SOURCES:
Agency for Toxic Substances and Disease Registry: “What are the health effects of PFAS?”
American Cancer Society: “Perfluorooctanoic Acid (PFOA), Teflon, and Related Chemicals.”
Comparative Medicine: “Polytetrafluoroethylene Toxicosis in Recently Hatched Chickens (Gallus domesticus).”
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Environmental science and pollution research international: “PTFE-coated non-stick cookware and toxicity concerns: a perspective.”
Environmental Working Group: “The Toxic Truth About a New Generation of Nonstick and Waterproof Chemicals.”
European Journal of Orthodontics: “The effect of Teflon coating on the resistance to sliding of orthodontics archwires.”
European Respiratory Journal: “Fatal acute pulmonary oedema after inhalation of fumes from polytetrafluoroethylene (PTFE).”
Food Volumes and Contaminants: “Perfluorochemicals: Potential sources of and migration from food packaging.”
Journal of exposure science & environmental epidemiology: “A Review of the Pathways of Human Exposure to Poly- and Perfluoroalkyl Substances (PFASs) and Present Understanding of Health Effects.”
Space: “Apollo Spacesuits Survive Today- in the Roofs Over Your Head.”
Tribology International: “Effect of temperature on the friction and wear behavior of electroless Ni–P–MoS2–CaF2 self-lubricating composite coatings."
United States Environmental Protection Agency: “Drinking Water Health Advisories for PFOA and PFOS,” “Risk Management for Per- and Polyfluoroalkyl Substances (PFAS) under TSCA,” “Technical Fact Sheet – Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoic Acid (PFOA).”
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