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Ensinger PEI

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Polimersan Plastics POLITEF® (PTFE)
Categories: Polymer; Thermoplastic; Fluoropolymer; Polytetrafluoroethylene (PTFE); Polytetrafluoroethylene (PTFE), Molded

Material Notes: POLITEF (PTFE) was invented in 1938. It is the most preferable and known fluoropolymer among fluorine polymers. It has superior properties that none of the other industrial plastics have because of its strong connection between the carbon and fluor atoms and its molecular structure made of a long and linear carbon chain, which is full with fluor atoms.

It has the widest working heat interval among all the industrial plastics (-260°C and +260°C) , complete unlimited resistance against humidity, against environment conditions and against all the chemical materials used in industry. It has the lowest static and dynamic friction coefficient among all the known solids, superior electrical isolation, non-adhesiveness, non inflammability and other properties like these. In addition to these, it has sufficient mechanical properties and full resistance against all chemical materials. All these provide POLITEF to be preferred more than the other materials at many usage areas. Moreover many times only POLITEF is being used.

POLITEF, is a material which can be used at many fields because of its above mentioned properties. Medicine, air and space technologies, cable and cable structure groups at computer sector, filter products, systems for determining leakage, valve spare parts, mechanical spare parts, electrical industry, food industry and textile industry are only small examples of POLITEF`s usage areas.

Information provided by Polimersan Polimer Kimya San.Tic.Ltd.Sti.

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Physical PropertiesOriginal ValueComments
Specific Gravity 2.13 - 2.23 g/ccASTM D1457-18; ISO.1183 DN.53479
Deformation 9.5 - 11 %230°C, 1 day, 140 kg/cm^2; ASTM D621
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 53 - 57ASTM D2240; DIN.53505
Ball Indentation Hardness 30.0 MPaISO.2039-2
Tensile Strength, Yield 25.0 - 30.0 MPaISO.527 DN.53455
 250 - 300 kg(f)/cm²ASTM D1708
Elongation at Break 250 - 300 %ASTM D1708
Elongation at Yield 25 %ISO.527 DN.53455
Izod Impact, Notched 15.5 kg-cm/cmASTM D256
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+15 ohm-cmISO.167 DN.53482
Surface Resistance >= 1.00e+13 ohmISO.167 DN.53482
Dielectric Strength 50.0 - 80.0 kV/mmASTM D149; ISO.243 DN.53481
 
Thermal PropertiesOriginal ValueComments
CTE, linear 120 - 140 µm/m-°C
@Temperature 20.0 °C
ASTM E831
Thermal Conductivity 0.0009722 cal cm/sec-cm²-°CASTM C177
Melting Point 325 - 330 °CISO.3146
Maximum Service Temperature, Air 260 °CISO.75 DN.53461
Minimum Service Temperature, Air -250 °C
Brittleness Temperature -200 °C
 
Descriptive Properties
Corrosion20 - 25 cc-dak/kg-ms25 - 1000°C
Kinding Temperature530°C, ASTM D1929

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