These calculations were therefore, performed using a computer program which could accept data manually or take input directly from a six channel data logger. Another popular brand name of ptfe is syncolon by synco chemical corporation. Thermal conductivity of ptfe and composites 10 which is the quantity we wish to measure. Polytetrafluoroethylene chemical compound ptfe generally, ptfe is a tough, flexible, nonresilient material of average tensile strength but with great thermal properties and excellent resistance to chemicals and passage of electric current. Ptfe is quite flexible and does not break when subjected to stresses of 0,7 nmm2 according to astm d 790. It has excellent thermal and electrical insulation properties and a low. Ptfe is produced by aft fluorotec in rods or tubes of any size, or filled with glass, carbon. Being hydrophobic, nonwetting, high density and resistant to high temperatures, ptfe is an incredibly versatile material with a wide variety of applications, though its perhaps bestknown for its nonstick properties. Ptfe is commonly known as teflon owned by chemours and offers remarkable nonstick properties in cookware applications such as kitchen pans and baking trays. The values shown in this table represent average experiences from numerous testing sources and are not intended. Polytetrafluoroethylene ptfe is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications.
Ptfe is one of a class of plastics known as fluoropolymers. A range of fillers, typically glass fibre, carbon, graphite, metal powders and molybdenum disulphide can be blended with ptfe resins, usually in the proportion of 2 40%, to improve certain characteristics. Ptfe polytetrafluoroethylene the combination of chemical and physical properties of ptfe is a consequence of its true fluorocarbon structure. Pdf preparation and mechanical properties of ptfenanoeg. Includes specific gravity, low temperature embrittlement, dielectric constant, refractive index, and arc resistivity. Most mechanical properties depend strongly on the processing conditions, which influence density, strength, elasticity, hardness and dielectric characteristics. It can have a fairly high density among thermoplastics. Polytetrafluoroethylene ptfe is a synthetic fluoropolymer of tetrafluoroethylene. Ptfe polytetrafluoroethylene data sheet at curbell. Mechanical properties of teflon coatings crest coating inc. Ptfe has excellent properties such as chemical inertness,heat resistance both high and low, electrical insulation properties, low coefficient of friction static 0. Our advice can be as broad ranging as helping you consider elements such as chemical. Abstract in this study, the static and dynamic mechanical behaviors of four types of ptfe alw reactive materials with different component mass ratios were studied. Properties of ptfe and some other insulating materials.
It exhibits useful properties over the widest temperature range of any polymer. Technical data sheet physical properties of ptfe and. However, the high temperature limit for fep is lower than ptfe, approximately 200c instead of 260c. Pdf this article presents the mechanical properties of ptfe coated fabrics used in central axis roof of shanghai expo. Ptfe is a fluoroplastic fluorinebased thermoplastic. The properties of ptfe include three common variations. The properties and advantages of ptfe aft fluorotec. It is insoluble in all common solvents and is resistant to almost all acidic and caustic materials.
Generally, filled ptfes maintain their excellent chemical and high temperature characteristics, while fillers improve mechanical strength, stability, and wear resistance. For each property being compared, the top bar is ptfe and the bottom bar is pvdf. Preparation and mechanical properties of ptfenanoeg. The wellknown brand name of ptfebased formulas is teflon by chemours. Ptfe resin property chart of mechanical, electrical, thermal and general properties. Ptfe polytetrafluoroethylene ptfe is a soft, low friction fluoropolymer with outstanding chemical resistance and weathering resistance. Physical properties astm method typical values specific gravity d792 2. Abstract the paper investigated the effect of irradiation with an electron beam of energy 10.
Structureproperty effects on mechanical, friction and. Originally created in the 1930s, it has since been used for a wide range of applications due to its unique set of mechanical and chemical properties. Ptfes low coefficient of friction, excellent electrical properties, high chemical resistance, and stability in wide temperature ranges make it a choice material for electrical and thermal applications like coil separators and terminals, as well as hightemperature seals, insulators, and bearings. Ptfe is commonly known as teflon ptfeteflon was originally.
Ptfe also has excellent electrical insulating properties. It has an extremely low coefficient of friction, and is used as a coating on cookware, gaskets, seals, and hoses. Carbongraphite filled ptfe polytetrafluorethylene has the ability to run, with extended life. Flexural modulus is about 350 to 650 nmm2 at room temperature, about 2000 nmm2 at 80c, about 200 nmm2 at 100c and about 45 nmm2 at 260c. Hence, in this work, five injectionmoulded blends of peek with ptfe in the range of 030 wt.
Polytetrafluoroethylene ptfe is a manmade polymer that has particular applications in manufactured products because of the unique chemical properties of ptfe. Ptfe properties ptfe material high performance plastic. Among these ptfe based composites, the nammtpes ptfe ternary composite containing 10. However, the enhanced compatibility of ptfe powder resulting from the specific chemical coupling of ptfe powder with epdm has been found crucial for mechanical, friction and wear properties. Ptfe, or polytetrafluoroethylene, is a fluoropolymer that is resistant to heat and chemicals. Polytetrafluoroethylene, a specialized plastic material that is part of the fluoropolymer group of compounds. There are 15 material properties with values for both materials. Ptfe has optimum dielectric properties within a vast range of temperatures and frequencies. Ptfe is stable at temperatures up to 500f and it is often used in high temperature environments.
However, to make the right selection of a fluoropolymer that suits a particular application, we include additional technical information that illustrates the properties of the range of. This article outlines the various properties of ptfe. Moreover, the mechanical properties of extrudates increase as the temperature goes through its two transition temperatures of 19c and 30c that render ptfe particles more deformable and prone. At each stage, we have needed to evaluate whether the finding impacts the properties of the final product. Ptfe also has outstanding chemical and weathering resistance. Properties of ptfe polytetrafluoroethylene polytetrafluoroethylene ptfe is high performance engineering plastics having unique properties. Mechanical properties of ptfe coated fabrics article pdf available in journal of reinforced plastics and composites 2924. Ptfes low coefficient of friction, excellent electrical properties, high chemical resistance, and stability in wide temperature ranges make it a choice material for electrical and thermal applications like coil separators and terminals, as well as. Technical data sheet tds physical properties of ptfe and. Ptfe tube end properties and characteristics our recent installation of a continuous line ptfe paste extruder has thrown up many findings. Ptfes mechanical properties can be enhanced by adding fillers such as glass fibers, carbon, graphite, molybdenum disulphide, and bronze.
Ptfe technical details ptfe applied coatings ptfe teflon. Ptfe has become the material of choice where low friction, excellent thermal properties, chemical inertness, and exceptional dielectric properties are required. Absorptivities in ptfe are unusually low, and a chemical reaction between the plastic and the other substances is a rarity with the few exceptions noted previously. Polytetrafluoroethylene, a specialized plastic material that is part of the fluoropolymer group of compounds originally created in the 1930s, it has since been used for a wide range of applications due to its unique set of mechanical and chemical pr. From the above it can be seen that working out lfor each sample by hand would be very laborious. It remains stable at both cryogenic and elevated temperatures from 400 f up to 500 f, though its mechanical properties are low compared to other engineering plastics. Ptfe polytetrafluoroethylene physical properties metric english comments density 2. Ptfe is a highly useful plastic material polytetrafluoroethylene ptfe. Pdf the polytetrafluroethylene ptfe polymerbased nanocomposites filled with nanoscale lamellar structure expanded graphite nanoeg and reinforced. Ptfe is insoluble in most organics and has excellent electrical properties.
Ptfe possesses very high resilience characteristics also at low. Carbongraphite filled ptfe polytetrafluorethylene has. Moreover, the influence of increasing amounts of ptfe in the blend on abrasive wear behaviour along with a correlation with strength properties is not reported. Characterization of the dynamic response and constitutive. Technical data sheet tds physical properties of ptfe. Both the thermal stability and the nanomechanical properties of the pes ptfe binary blend composites are clearly improved by the incorporation of nammt nanoparticles. Typical properties of ptfe astm or ul test property ptfe unfilled ptfe 25% glass filled ptfe 25% carbon filled physical d792 density lbin. Chemours was a spinoff from dupont, which originally discovered the compound in 1938. Physical and chemical properties form solid tubing density 2,17 grcm3. It has an extremely low coefficient of friction, and is used as a coating on. Characterization of ptfe using advanced thermal analysis.
Fep fluorinated ethylene propylene, like ptfe, has a fully fluorinated structure which leads to excellent chemical, thermal, and electrical properties. Previous work has pointed out that about 15 mechanical properties plus several electrical and chemical properties of teflon ptfe resins are influenced by. Mechanical properties are often enhanced by adding fillers see paragraph below. The coefficient of friction is unusually low and believed to be lower than any other solids. Investigation on mechanical properties and reaction. When i was writing about ptfe on the page about polymerisation of alkenes, i spent ages trying to find out why ptfe was nonstick and failed completely part of the information i found on the web i know to be untrue or illogical, but there is a mass of stuff which, to be frank, i simply dont understand. In this work, six types of alptfe composites with different al particle sizes i. Thermal, mechanical, and tribological properties of sodium. Influence of ptfe content in peekptfe blends on mechanical. Technical data sheet physical properties of ptfe and filled. Dyneon ptfe continues to meet tough demands for new applications and maintains proven success and high reliability in the following industries. This unusual structure leads to a material which has an almost universal chemical inertness. A polymer is a compound formed by a chemical reaction which combines particles into groups of repeating large molecules.
Ptfe is inert to mostly all chemicals and is considered the slipperiest material in existence. First, groups of offaxial and biaxial tensile tests are carried out, and the failure mechanism and strength criterion are studied. Then, onaxial samples are tested under different strain. There are many nonstandard filled grades of ptfe such as. May 24, 2017 ptfe tube end properties and characteristics our recent installation of a continuous line ptfe paste extruder has thrown up many findings. When i was writing about ptfe on the page about polymerisation of alkenes, i spent ages trying to find out why ptfe was nonstick and failed completely part of the information i found on the web i know to be untrue or illogical, but there is a mass of. However, when absorption is combined with other effects, this property can influence the serviceability of these resins in a particular chemical environment. This article presents the mechanical properties of ptfe coated fabrics used in central axis roof of shanghai expo. Fep has good meltflow characteristics which permit melt bonding to itself, to kapton. Ptfe retains some measure of ductility at 4 k and in some situations is used in applications at 540 8c. It also shows flameretardant properties and is stable at 260c for an indefinite length of time. Properties with values for just one material 19, in this case are not shown. Ptfe technical details fluoropolymers have many advantages and strengths associated with nonstick, low friction and chemical resistance to name but a few.
Many common synthetic fibers are polymers, such as polyester and nylon. Ptfe has a low heat transmission factor and can be therefore considered a thermoinsulating material. The wellknown brand name of ptfe based formulas is teflon by chemours. Modeling of the mechanical behavior of polytetrafluoroethylene. In addition, it can have a moderately high ductility and a fairly low tensile strength. Ptfe is commonly known as teflon ptfe teflon was originally developed by the du pont corporation. Pdf mechanical properties of ptfe coated fabrics researchgate. Ptfe polytetrafluoroethylene data sheet at curbell plastics.