PES
(polyethersulfone) |
Download
Product Brochure (39kb - pdf)
|
High resistance to heat and
combustibility, low smoke emission, and transparency are the
combination of properties possessed by stock shapes extruded
from PES. These, coupled with light weight, good impact
resistance, dimensional stability, and chemical resistance, make
stock shapes extruded from PES resin useful in the
electrical/electronics, aerospace/aircraft, automotive, and mass
transit industries. PES stock shapes are also applicable for
heat and fire safety, food service, and hospital and health care
items.
The following physical property
information is based on typical values of the base
polyethersulfone resin (PES).
|
|
Mechanical Properties |
| |
Units |
ASTM Test |
Result |
| Tensile Strength @yeild |
psi |
D638 |
12,000 |
| Tensile Strength @break |
psi |
D638 |
- |
| Tensile Modulus |
psi |
D638 |
385,000 |
| Tensile Elongation @yield |
% |
D638 |
5.5 |
| Tensile Elongation @break |
% |
D638 |
50.0 - 100.0 |
| Flexural Strength @yield |
psi |
D790 |
16,100 |
| Flexural Modulus |
psi |
D790 |
420,000 |
| Compressive Strength @ yield |
psi |
D695 |
14,500 |
| Compressive Modulus |
psi |
D695 |
388,000 |
| Izod Impact Strength Un-notched |
ft·lbs/in |
D256 |
no break |
| Izod Impact Strength Notched @ 73°F |
ft·lbs/in |
D256 |
1.6 |
| Hardness (R, M, L or D) |
- |
D7852 |
R127 |
|
|
Thermal Properties |
| |
Units |
ASTM Test |
Result |
| Heat Deflection Temp. @66 psi |
°F |
D648 |
417 |
| Heat Deflection Temp. @264 psi |
°F |
D648 |
399 |
| Coefficient of Thermal Expansion |
in/in/°F |
D696 |
2.7 X 10-5 |
| Flammability Rating-UL94 @.031" |
- |
- |
V-0 |
| Thermal Conductivity |
(BTU•in)/(hr•ft2•°F) |
C177 |
1.13 |
| Limiting Oxygen Index |
% |
D2863 |
39.3 |
|
|
Electrical Properties |
| |
Units |
ASTM Test |
Result |
| Dielectric Strength |
V/mil |
D149 |
380 |
| Dielectric Constant @ 1kHz |
- |
D150 |
3.50 |
| Dissipation Factor @ 1 kHz |
- |
D150 |
0.0022 |
| Volume Resistivity |
ohm•cm |
D257 |
1.7 x 1015 |
|
|
Optical Properties |
| |
Units |
ASTM Test |
Result |
| Haze |
% |
D1746 |
8.0 |
| Transparency |
% |
D1746 |
76 |
|
|
Other Properties |
| |
Units |
ASTM Test |
Result |
| Specific Gravity |
- |
D792 |
1.37 |
| Water Absorption @24 hours |
% |
D570 |
1.85 |
|
|
| Applications
Include: |
| • Printed circuits |
| • High intensity light bases |
| • Safety face shields |
| • Machine guards |
| • Connectors |
| Advantages of
PES: |
| • Low smoke generation |
| • Excellent electrical properties at
elevated temperatures |
| • Transparency |
| • Excellent chemical resistance |
| • Easily machined |
| Manufacturing
Capabilities: |
| Rod: 3/16” to 6” diameter |
| Sheet: .035” to 4” thick |
| Film: .001” to .029” thick |
| Slab: 1/4” to 4” thick |
| Color/Grades: |
| Transparent (custom colors
available) |
| *In addition to our standard
capabilities, Westlake also has the ability to process custom
resins in various sizes and colors with some exceptions. |
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