1. The difference between PTFE and Teflon.
Dankai tells you that polytetrafluoroethylene (PTFE for short) and Teflon are closely related in nature, but they are slightly different in application and understanding.
PTFE is a perfluorinated polymer compound composed of carbon and fluorine atoms closely arranged and has an extremely stable chemical structure. The material's unique properties, such as its extremely low surface energy, excellent chemical stability (virtually non-reactive with all chemicals), high temperature resistance (approx. 260 °C in the short term, over a wide range of long-term temperatures), and excellent electrical insulating properties, make it extremely valuable in a wide range of applications.
Teflon is the brand name of DuPont in the United States for its own production of polytetrafluoroethylene (PTFE) and its related derivatives, which is like "apple" to fruit. Therefore, in a strict sense, Teflon is a commercial general term for a class of PTFE-containing products or coatings, including a variety of high-performance industrial products and daily consumer goods made of PTFE as raw materials, such as non-stick pan coatings, seals, cable insulation, chemical equipment linings, etc.
In other words, all Teflon products are developed based on the properties of PTFE, but not all Teflon products are called PTFE. In other words, Teflon is a brand manifestation of PTFE, and its wide application and popularity make it customary to call PTFE's non-stick, heat-resistant, corrosion-resistant and other characteristics as "Teflon" in many cases, but this does not change the essential properties of its core material, PTFE.
Second, the classification of Teflon.
Dankai tells you that Teflon can be divided into 4 categories.
1.Polytetrafluoroethylene (PTFE):
PTFE is the original Teflon product, with excellent high and low temperature resistance, almost no reaction with all known substances, and a low coefficient of friction and superior electrical insulation properties.
2.Fluorinated ethylene propylene copolymer (FEP):
FEP is a soft thermoplastic that is easier to process and mold than PTFE, has a lower melting point, and can be made into films, tubes, joints, and other products by heat shrink or injection molding at lower temperatures.
3.Perfluoroalkoxy resins (PFAs):
PFA also has excellent temperature and chemical resistance, and retains good mechanical strength at high temperatures, allowing it to be welded and injection molded.
4.Other derivatives:
Teflon also includes some composite materials and modified products, such as PVDF (polyvinylidene fluoride), ETFE (ethylene-tetrafluoroethylene copolymer), etc., which have specific applications in construction, electronics, aerospace, environmental protection and other fields.
This article was originally written by Miss Teflon Tube, welcome to pay attention and take you to grow knowledge together!