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Polyetherimide (PEI)
Polyetherimide ( PEI ) is an amorphous, amber transparent, high-performance thermoplastic with the characteristics similar to PEEK. Relative to PEEK, it is less temperature-resistant, less expensive, and lower in impact strength. It is prone to stress cracking in chlorinated solvents.
PEI Specifications
|
PEI 1000 |
PEI 10GF |
PEI 20Gf |
PEI 30GF |
PEI 40GF |
| |
Description |
ASTM Test Method |
General Purpose |
10& Glass filled |
20% Glass filled |
30% Glass filled |
40GF% Glass Filled |
| Physical |
Melt Flow rate, g-10min |
D1238 |
10 to 30 |
5 to 22 |
5 to 22 |
5 to 22 |
5 to 22 |
|
Specific gravity |
D792 |
1.27 |
1.34 |
1.42 |
1.51 |
1.60 |
| |
Mold Shrinkage E-3 in/in |
D955 |
5-7 in/in |
4-6 in/in |
2-5 in/in |
1-4 in/in |
1-3 in/in |
|
Tensile Strength Break, PSI |
D638 |
15,000 |
16,500 |
20,000 |
23,500 |
25,600 |
|
Tensile Strength Yield, PSI |
D638 |
15,000 |
16,500 |
20,000 |
23,500 |
25,000 |
| Mechanical |
Flexural Strength, PSI |
D790 |
21,000 |
27,000 |
29,000 |
32,000 |
34,000 |
|
Flexural Modulus, PSI x 1000 |
D790 |
470 |
650 |
890 |
1,200 |
1,600 |
|
Notched Izod Impact strength ft-lb/in |
D256 |
1.0 |
1.0 |
1.3 |
1.5 |
1.8 |
| |
Gardner Falling Dart Impact in-lbs |
D3029 |
320 |
|
|
|
|
| Thermal* |
HDT @66 PSI F |
D648 |
400 |
405 |
410 |
412 |
418 |
| |
HDT @264 PSI F |
D648 |
385 |
400 |
405 |
410 |
413 |
| Flammability |
UL 94 @1/16" |
UL94 |
V-0 |
V-0 |
V-0 |
V-0 |
V-0 |
| |
UL 94 @1/8" |
UL94 |
V-0 |
V-0 |
V-0 |
V-0 |
V-0 |
|
Processing method***** |
|
IM |
IM |
|
|
|
|
Drying Temp F |
|
290-300 |
290-300 |
290-300 |
290-300 |
290-300 |
| Typical Processing Conditions Units |
drying Time(hours) |
|
4-6*** |
4-6*** |
4-6*** |
4-6*** |
4-6*** |
|
Melt Temp (F) |
|
640-750 |
640-750 |
640-750 |
640-750 |
640-750 |
|
Mold temp(F) |
|
225-350 |
225-350 |
225-350 |
225-350 |
225-350 |
|
Front Zone(F) |
|
650-750 |
650-750 |
650-750 |
650-750 |
650-750 |
|
Middle Zone(F) |
|
640-750 |
640-750 |
640-750 |
640-750 |
640-750 |
| |
Rear Zone(F) |
|
630-750 |
630-750 |
630-750 |
630-750 |
630-750 |
|
* All mechanical and thermal testing conducted on
1/8 thick unpigmeneted test samples
|
|
(Structural foam grades tested with foamed parts,
with a 10-20% weight reduction.) |
|
** Do not exceed 8 hours |
|
*** Do not exceed 24 hours |
|
****Processing Methods: Injection molding (IM), Structural Foam (SF), Extrusion (E) |
|
Notched Izod @ 40F, ft-lb/in. ASTM D256 |
|
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