PFA 350杜邦铁氟龙系列PFA

Typical Property Data for DuPont™ Teflon® PFA Fluoropolymer Resin Grade 350
ASTM Nominal
Property Test Method Unit Value
Thermal
Nominal Melting Point D3418 °C 302–310
(°F) (575–590)
Coefficient of Linear Thermal
Expansion, 21–100°C D696 mm/mm/°C 14 x 10–5
(70–212°F) (in./in./°F) (7.8 x 10–5)
100–149°C mm/mm/°C 18 x 10–5
(212–300°F) (in./in./°F) (9.8 x 10–5)
149–208°C mm/mm/°C 22 x 10–5
(300–408°F) (in./in./°F) (12.1 x 10–5)
Upper Service Temperature — °C 260
(°F) (500)
Flow Rate D3307 g/10 min 2.0
Mechanical
Tensile Strength, 23°C (73°F) D3307 MPa (psi) 28 (4,00)
250°C (482°F) MPa (psi) 14 (2,00)
Specific Gravity D792 — 2.12–2.17
Tensile Yield Strength, 23°C (73°F) D3307 MPa (psi) 15.2 (2,200)
Ultimate Elongation, 23°C (73°F) D3307 % 300
250°C (482°F) % 500
Flexural Modulus, 23°C (73°F) D790 MPa (psi) 625 (90,000)
250°C (482°F) MPa (psi) 69 (10,000)
Hardness Durometer D2240 — D55
MIT Folding Endurance D2176 cycles 500,000*
0.18–0.20 mm (0.007–0.008 in.)
Electrical
Dielectric Strength
Short Time, 0.25 mm (0.010 in.) D149 kV/mm (V/mil) 80 (2,000)
Dielectric Constant, 60–106 Hz D150 — 2.03
Dissipation Factor, 60–106 Hz D150 — 0.0001
Volume Resistivity D257 ohm.cm 1018
General
Water Absorption, 24 hr D570 % Weather and Chemical Resistance — — Outstanding
Limiting Oxygen Index D2863 % >95