PVDF (POLYVINYLIDENE FLUROIDE)

PVDF (POLYVINYLIDENE FLUROIDE)

Material Information

PVDF is a melt processable fluoropolymer that belongs to the fluorocarbon family of thermoplastics. It is stiffer and resists creep and wear better than PTFE, FEP, and PFA but its chemical resistance, antistick properties, lubricacy, electrical properties, and useful temperature range (-80º F to 300º F) are not as good. However, it’s chemical and corrosion resistance is still good enough to be an excellent option for chemical processing and corrosion resistant applications. It is easily fabricated into finished parts, resistant to UV and gamma radiation, moisture resistant, non-flammable, self extinguishing, and is FDA/USDA/NSF compliant. These properties also make PVDF ideal for use in pharmaceutical and food industries as well. It is available in the form of rod and sheet.

Application

  • Solid pipe and fittings
  • Tank and process equipment
  • Pipe flanges and spacers
  • Liners for steel pipe and fittings, hoses, pumps, valves
  • Glass backed sheet for lining vessels
  • Mass transfer tower packing
  • Gaskets and spacers
  • Tubing
  • Coated fabrics
  • Wire and cable insulation

Properties

  • Superior chemical and corrosion resistance
  • Aging resistant
  • Extremely high purity
  • Good thermal stability
  • Fire resistant and self extinguishing
  • Non-toxic
  • UV and gamma radiation resistant
  • Good mechanical properties
  • High density
  • Easily machined
  • Moisture resistant
  • FDA/USDA/NSF compliant

Physical

Astm Test Method

PVDF

Density (lb/in^3) D792 0.064
Specific Gravity D792 1.77
Water Absorption @ 24 hours (%) D570 0.03

Mechanical

Tensile Strength (PSI) D638 6,300
Tensile Modulus (PSI) D638 290,000
Tensile Elongation at Break (%) D638 50
Flexural Strength (PSI) D790 9,700
Flexural Modulus (PSI) D790 290,000
Compressive Strength (PSI) D790 9,000
Compressive Modulus (PSI) D695 -
Izod Impact (Notched), ft-lb/in D256 3
Shore Hardness D2240 D75

Thermal

Coefficient of Thermal
Expansion, 10^-5/°F
D696 6.6
Heat Deflection Temperature 264 psi, ºF D648 230
Melting Point, °F D3418 332
Continous Service Temp (Operating), °F  - 275
Thermal Conductivity, BTU-in/hr-ft² °F C177 1.2
Flammability Rating UL94 VO

Electrical

Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
D149 1,700
Volume Resistivity (ohm-cm) @ 50% RH D257 1.50 x 10^15
Dielectric Constant at 1 MHZ D150 8.5
Dissipation Factor at 1 MHZ D150 0.05

NOTE:

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.