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 |
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| 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 |
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| 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 |
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| 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.