頂技工業有限公司

鐵氟龍有著,極強的氟碳鍵結以及極高的分子量,使其有如下列的各種性能,並且使用溫度範圍極廣 -250℃~ 250℃...

Summery of properties for PTFE,PFA and FEP

Property

Specification

Unit

Material

 

(ASTM)

 

PTFE

PFA

FEP
General
Continuous service temperature Maximum °C 260 260 200
° F 500 500 392
Chemical resistance  

-

Excellent Excellent Excellent
Specific gravity D 792 - 2.15 2.15 2.15
Electrical
Dielectric constant D 150 at 103 Hz

-

2.1

2.1 2.1
D 150 at 106 Hz

-

2.1 2.1 2.1
Dielectric dissipation factor D 150 at 103 Hz

-

0.0002 0.0002 0.0001
D 150 at 106 Hz - 0.0002 0.0003 0.0008
Dielectric strength
(short term) 10 mils film
D 149 Volt/mil > 1 400 2 000 2 000
Volume resistivity

D 257

Ohm·cm

>1018 >1018 >1018
Enviromertal
Water absorption D 570 % < 0.01 < 0.03 <0.01
Weather resistance - - Excellent Excellent Excellent
Oxygen index D 2863 % > 95 > 95 >95
Flammability UL 94 - V-0 V-0 V-0
Mechanical
Tensile strength

D 1708, D 638

psi 3 500 4 000 3 500
Elongation D 1708, D 638 % 300 300 300
Compressive strength D 695 psi 3 500 2 200 2 200
Impact strength D 256 at +23°C Ft-Lb/in 3.5 No Break No Break
Flexural Modulus D 790 at +23°C psi 90 000 100 000 95 000
Tensile Modulus D 638 psi 80 000 40 000 50 000
Hardness D 2240 - D-60 D-60 D-55
Thermal
Melting point   ° C 327 305 270
  ° F 620 581 518
Thermal conductivity C-177 BTU/hr/ft2
/°F.in
1.7 1.3 1.4
Deflection temperature
66 psi
264 psi

D 648

° C 122
55
74
48
59
57
Deflection temperature
66 psi
264 psi
D 648 ° F 252
131
166
118
138
134