Celazole ® PolyBenzImidazole Specifications
GENERAL PROPERTIES
Celazole ® PBI is a high performance imidized
thermoplastic. Chemically, Celazole ®
PBI is polybenzamidazole.
Celazole ® PBI is the highest performing
engineering plastic currently available. It offers the highest heat
resistance (it does not melt) and mechanical property retention
over 400°F (205°C) of any unfilled plastic. It has better wear resistance
and load carrying capabilities at extreme temperatures than any
other reinforced or unreinforced engineering plastic.
As an unreinforced material, Celazole ®
PBI is very clean in terms of ionic impurity and it does not outgas
(except water). These characteristics make this material very attractive
to semiconductor manufacturers for vacuum chamber applications.
Celazole ® PBI has excellent ultrasonic
transparency which makes it an ideal choice for parts such as probe
tip lenses in ultrasonic measuring equipment.
Celazole ® PBI is also an excellent thermal
insulator. Other plastics in melt do not stick to PBI. These
characteristics make it ideal for contact seals and insulator
bushings in plastic production and molding equipment.
TYPICAL APPLICATIONS
• Wafer retaining rings for gas plasma etching • Vacuum
tips • Wafer carriers • Contact seals • Insulator bushings • Thermal
isolators • Guide rollers
|
TYPICAL PROPERTIES of CELAZOLE
® PBI |
| ASTM or UL test |
Property |
Celazole ®
PBI |
| PHYSICAL
|
| D792 |
Density (lb/in³)
(g/cm³) |
0.047
1.30 |
| D570 |
Water Absorption, 24 hrs (%) |
0.40 |
| MECHANICAL
|
| D638 |
Tensile Strength (psi) |
23,000 |
| D638 |
Tensile Modulus (psi) |
850,000 |
| D638 |
Tensile Elongation at Break (%) |
3.0 |
| D790 |
Flexural Strength (psi) |
32,000 |
| D790 |
Flexural Modulus (psi) |
950,000 |
| D695 |
Compressive Strength (psi) |
50,000 |
| D695 |
Compressive Modulus (psi) |
900,000 |
| D785 |
Hardness, Rockwell |
E105 |
| D256 |
IZOD Notched Impact (ft-lb/in) |
0.5 |
| THERMAL
|
| D696 |
Coefficient of Linear Thermal Expansion
(x 10 -5 in./in./°F) |
1.3 |
| D648 |
Heat Deflection Temp (°F / °C)
at 264 psi |
800 / 427 |
| D3418 |
Glass Transition Temp (°F / °C) |
750 / 399 |
| - |
Max Operating Temp (°F / °C) |
650 / 343 |
| C177 |
Thermal Conductivity
(BTU-in/ft²-hr-°F)
(x 10 -4 cal/cm-sec-°C) |
2.80
9.64 |
| UL94 |
Flammability Rating |
V-O |
| ELECTRICAL
|
| D149 |
Dielectric Strength (V/mil) short time,
1/8" thick |
550 |
| D150 |
Dielectric Constant at 1 MHz |
4.20 |
| D150 |
Dissipation Factor at 1 MHz |
- |
| D257 |
Volume Resistivity (ohm-cm)at 50% RH |
>10 13
|
NOTE: The information contained herein are typical values intended
for reference and comparison purposes only. They should NOT
be used as a basis for design specifications or quality control.
Contact us for manufacturers' complete material property datasheets.
All values at 73°F (23°C) unless otherwise noted.
CELAZOLE is a registered trademark of Celanese
Advanced Materials, Inc.
