Teflon®
(PTFE) - Sheet & Rod
PTFE
(Polytetrafluoroethylene)
is
one of the most thermally stable plastic materials. There is no appreciable
decomposition at 260°C so that PTFE at this temperature still processes the
greater part of its properties. PTFE can be employed at any temperature from
-200°C to +260°C.
The original PTFE resin was invented by DuPont in 1938 and called
Teflon®.
|
Characteristics: |
|
•
High heat resistance |
•
High chemical resistance |
•
High dielectric properties |
|
•
Low friction of coefficient |
•
Non-Toxic |
Sheet Virgin
•
Thickness: Skived -
1/32" to 3/16" (48" x 48")
•
Molded -
3/16" to 2-1/2"
•
Size:
(48" x 48" up to 1-1/4", 24" X 24" from 1-1/2" to 2-1/2")
Sheet
Reprocessed
•
Thickness: Skived -
1/32" to 1/4" (48" x 48")
•
1/32",
1/16", 1/8" available on continuos rolls
Rod
•
Centerless ground through 2" diameter
•
12" molded lengths
•
Custom fillers available (minimums apply)
•
Sizes:
Extruded - 1/8" to 4" diameter
•
Molded -
4-1/4" to 8" diameter
Skived Rolls
•
Thickness: .005 to
.125
•
Width:
12",24", 48" (.005 available in 12" only)
|
Properties |
ASTM
Method |
Units |
Virgin PTFE |
Reprocessed
PTFE |
25% Glass
PTFE |
|
Specific Gravity |
D792 |
|
2.14-2.20 |
2.15-2.20 |
220-230 |
|
Tensile Strength |
D638 |
PSI |
1500-3500 |
1500-2400 |
2000-3000 |
|
Elongation |
D638 |
% |
250-350 |
75-200 |
100-260 |
|
Hardness |
D1700 |
Durometer "D" |
50-60 |
|
55-65 |
|
Deformation %
730F, 1500 psi, 24 hours |
D621 |
|
4-8 |
|
1.73 |
|
Deformation %
1000F, 1500 psi, 24 hours |
D621 |
|
10-18 |
|
1.91 |
|
Deformation %
2000F, 1500 psi, 24 hours |
D621 |
|
20-25 |
|
4.57 |
|
Impact Strength,
Izod
7300F Average
1700F Average |
D256 |
Ft./Lb./In. |
3.00
6.00 |
|
2.54
3.69 |
|
Water Absorption |
D570 |
% |
0.001 |
|
0.013 |
|
Coefficient of Friction
(Static) 730F |
*3 |
|
0.04 |
|
0.085 |
|
Dielectric Constant
(100 CPS) |
D150 |
|
2.00 |
2.26 |
2.4 |
|
Dielectric Strength (4) (air) |
D257 |
Volts |
1000 |
450 |
235 |
|
Coefficient of Thermal Expansion 730F |
D696 |
In./In./Ft. |
5.5 x 10.3 |
|
2.75 x 10.3 |
|
Coefficient of Thermal Conductivity |
*5 |
Btu/hr/ftz |
1.7 |
|
3.12 |
|
PV
at 900 ft./min |
|
|
2500 |
|
15,000 |
|
Color |
*6 |
|
white |
off white |
brownish white |
Teflon® is a
registered trademark of Dupont Dow Elastomers, LLC
