Celazole® PBI Material Properties
Celazole® is the highest performance engineering thermoplastic in the world outperforming polyimides, polyamides and polyketones.
Celazole® has the lowest coefficient of thermal expansion and highest compressive strength of all unfilled plastics. At temperatures over 400°F, Celazole® possesses the highest heat resistance and mechanical property retention of any unfilled polymer. It is ideal for use in extreme temperatures where it provides better wear resistance and load carrying capabilities than any other reinforced or unreinforced engineering thermoplastic.
Having excellent ultrasonic transparency; unreinforced Celazole® is an ideal choice for parts such as probe tip lenses in ultrasonic measuring equipment.
Celazole® has the highest strength and rigidity of any unreinforced material. It also maintains excellent creep resistance to temperatures over 800°F. A superior wear material, it offers great thermal insulating properties and contains very low levels of impurities.
Applications: Ball valve seats, electrical connectors, high heat insulator bushings, clamp rings, vacuum chamber applications.
Celazole® PBI (typical values)
| PHYSICAL PROPERTIES | |
|---|---|
| Density | 0.047 lb/in2 |
| Water Absorption Immersion, 24 hr % | 0.4 |
| Water Absorption Immersion Sat, % | 5 |
| MECHANICAL PROPERTIES | |
| Specific Gravity | 1.3 |
| Tensile Strength | 20000 psi |
| Flexural Strength | 32000 psi |
| Compressive Strength | 50000 psi |
| Hardness, Rockwell M | 125 |
| Coefficient of Friction, Dynamic | 0.24 |
| Coefficient of Friction, Dynamic | 5000 psi |
| THERMAL PROPERTIES | |
| Coefficient of Thermal Expansion | 1.3in/in/°F x 10-5 |
| Deflection Temperature 264 psi | 800°F |
| Thermal Conductivity | 2.8 BTU-in/(hr/ft2 °F) |
| Tg-Glass Transition (Amorphous) | 750°F |
| ELECTRICAL PROPERTIES | |
| Dielectric Strength, Short Term | 550 Volts/mil |
| Surface Resistivity | >1013 ohm/cm |
| Dielectric Constant, 1MHz | 3.2 |
| Dissipation Factor, 1MHz | 0.003 |
