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PCTFE (POLYCHLOROTRIFLUOROETHYLENE)

Material: Available in: , ,

Material Information

PCTFE is a thermoplastic that is produced by the polymerization of chlorotrifluoroethylene. It offers a unique combination of physical and mechanical properties, nonflammability, chemical resistance, very low moisture absorption, and excellent electrical properties. All of these characteristics are found over a useful temperature range (-400º F to 400º F). However, over 212º F a few solvents may dissolve the material or cause it to swell. It also has extremely low outgassing, which makes it a good option for aerospace and flight applications. It can be processed by compression molding or extrusion, and can be machined to precise tolerances. PCTFE is available in the form of rod, sheet, and tubing.

Application

  • Aircraft/Aerospace applications
  • Laboratory equipment components
  • Electronic/Electrical applications
  • Medical/Pharmaceutical applications
  • Valve seats
  • Seals
  • O-rings
  • Gaskets
  • Bearings

Properties

  • Excellent chemical resistance
  • Near zero moisture absorption
  • Low creep and cold flow
  • Ultraviolet stability
  • High optical transparency (thin films)
  • Continuous usage temperature of -400º F to 400º F
  • Low coefficient of thermal expansion
  • Excellent electrical insulator
  • Non-flammable
  • Very low outgassing

Specifications

PhysicalAstm Test MethodPCTFE
Density (lb/in^3)D7920.077
Specific GravityD7922.13
Water Absorption @ 24 hours (%)D570
Mechanical
Tensile Strength (PSI)D6385,300
Tensile Modulus (PSI)D638207,000
Tensile Elongation at Break (%)D638150
Flexural Strength (PSI)D7908,500
Flexural Modulus (PSI)D790180,000
Compressive StrengthD6955,500
Compressive Modulus (PSI)D695180,000
IZOD Notched Impact (ft-lb/in)D2565
Shore D HardnessD785D90
Thermal
Coefficient of Thermal
Expansion, 10^-5/°F
D6967
Heat Deflection Temperature 264 psi, ºFD648258
Melting Point, °FD3418415
Continous Service Temp (Operating), °F270
Thermal Conductivity, BTU-in/hr-ft² °FC1771.45
Flammability RatingUL94VO
Electrical
Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
D149500
Volume Resistivity (ohm-cm) @ 50% RHD25710^18
Dielectric Constant at 1 MHzD150
Dissipation Factor at 1 MHzD150

Disclosure: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.

 

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