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FH 8 Oct 02 / page 1

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Title: INTRODUCTION TO FEP MELT PROCESSING Author: Niall McKee Created Date: 3/20/2000 1:34:33 PM Document presentation format: Overhead Company – PowerPoint PPT presentation

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Title: FH 8 Oct 02 / page 1


1
PFA 200 - 450 x 103 2.8 - 4.0 305 3 -
35 x 104 1.5 - 18
TYPICAL PROPERTIES MOLECULAR WEIGHT COMONOMER
CONTENT MELTING POINT (ASTM D-4591) MELT
VISCOSITY MELT FLOW RATE (ASTM D-1238)
PTFE 106 - 107 lt 1 327 - 342 1010 -
1011 NO FLOW
FEP 250 - 600 x 103 10 - 12 260 3 - 55 x
104 1 - 18
UNITS WEIGHT ºC Pa . s g/10 min
ETFE 250 - 400 x 103 20 265 0.5 - 13 x
104 2.5 - 64
Measured at 372 ºC, but ETFE at 297 ºC, 5 kg
weight and 2.095 mm die
2
Electrical properties RELATIVE
PERMITTIVITY (ASTM D-150) DISSIPATION
FACTOR (ASTM D-150) ARC RESISTANCE (ASTM
D-495) VOLUME RESISTIVITY (ASTM D-257) SURFACE
RESISTIVITY (ASTM D-257)
PFA 2.060 0.00010 gt 180 gt 1016 gt 1017
FEP 2.040 0.00058 gt 300 gt 1016 gt 1016
ETFE 2.60 0.005 gt 72 gt 1014 gt 1014
UNITS 1 kHz- 1 MHz _at_ 1 MHz s W . m W
PTFE 2.070 0.00010 gt 300 gt 1016 gt 1016
Stain Less Steel electrodes
3
Thermal properties
PFA 305 260 94V-0 gt 95 4.7 - 4.9
PTFE 327 260 94V-0 gt 95 4.9 - 5.0
FEP 260 205 94V-0 gt 95 4.8 - 5.1
UNITS ºC ºC MJ/kg
ETFE 265 155 94V-0 30 - 32 12.4 - 12.6
PEAK MELTING TEMP. (ASTM D 4591) SERVICE
TEMP. (20 000 h) FLAME CLASS (UL94) LIMITING
OXYGEN INDEX (ISO 4589) HEAT OF COMBUSTION (ISO
1716)
4
Mechanical properties
PFA 2.15 25 - 35 350 520 - 690 10 000 200
000 No break 155 D-56 0.2
ETFE 1.71 45 - 51 200 - 375 1000 - 1380 5
000 35 000 No break gt 1 100 D-67 0.4
UNITS g/cm3 MPa MPa Cycles
to failure J/m Shore D
FEP 2.15 20 - 34 325 550 - 655 5 000 80
000 No break 158 D-55 0.3
PTFE 2.16 26 - 36 325 490 885 000 gt 90 x
106 185 107 D-55 0.1
DENSITY (ISO 1183) TENSILE STRENGTH (ISO
12086) ULTIMATE ELONGATION (ISO 12086) FLEXURAL
MODULUS (ISO 178) FLEX LIFE (D 2176) (M.I.T. 0.2
mm, 270º flex) IMPACT RESISTANCE 23 ºC (ASTM
D-256) - 54 ºC HARDNESS (ISO 868) COEFFICIENT
OF FRICTION (dynamic, ASTM D 1894)
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