GENERAL DESCRIPTION
Duratron ® PBI is a high performance imidized thermoplastic. Chemically, PBI is PolyBenzImidazole.
Duratron ® 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, Duratron ® 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. Duratron ® PBI has excellent ultrasonic transparency which makes it an ideal choice for parts such as probe tip lenses in ultrasonic measuring equipment.
Duratron ® 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.
Duratron CU60 PBI (Unfilled)
As an unfilled material, Duratron ® CU60 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. Duratron ® CU60 PBI has excellent ultrasonic transparency which makes it an ideal choice for parts such as probe tip lenses in ultrasonic measuring equipment.
Duratron ® CU60 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. (see also Celazole® PBI)
For a complete overview of Quadrant's Duratron product family, including other high-performance engineering plastics, see this page.
|
TYPICAL PROPERTIES of DURATRON® PBI PolyBenzImidazole | ||
| ASTM or UL test | Property | Duratron® CU60 PBI unfilled |
| PHYSICAL | ||
| D792 | Density (lb/in³) (g/cm³) |
0.050 1.37 |
| D570 | Water Absorption, 24 hrs (%) | 0.7 |
| D570 | Water Absorption, Saturation (%) | 3.8 |
| MECHANICAL | ||
| D638 | Tensile Strength (psi) | 17,500 |
| D638 | Tensile Modulus (psi) | 540,000 |
| D638 | Tensile Elongation at Break (%) | 6.0 |
| D790 | Flexural Strength (psi) | 25,000 |
| D790 | Flexural Modulus (psi) | 550,000 |
| D732 | Shear Strength (psi) | 16,000 |
| D695 | Compressive Strength (psi) | 27,000 |
| D695 | Compressive Modulus (psi) | 380,000 |
| D785 | Hardness, Rockwell | R128 |
| D256 | IZOD Notched Impact (ft-lb/in) | 1.0 |
| PTM 55007 | Coefficient of Friction (Dry vs. Steel) Dynamic | 0.29 |
| PTM 55007 | Limiting PV (4:1 Safety Factor) (ft-lb-in2-min | 15,000 |
| PTM 55010 | Wear Factor "k" x 10-10(in3-min/ft-lb-hr | 150 |
| THERMAL | ||
| E-831 | Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) |
2.25 |
| D648 | Heat Deflection Temp (°F / °C) at 264 psi |
800 / 427 |
| D3418 | Glass Transition Temp (°F / °C) | 775 / 413 |
| - | Max Operating Temp (°F / °C) in air inert atmosphere short term |
650 / 343 750 / 399 1,000 / 538 |
| C177 | Thermal Conductivity (BTU-in/ft²-hr-°F) (x 10-4 cal/cm-sec-°C) |
1.5 5.2 |
| UL94 | Flammability Rating | V-0 |
| ELECTRICAL | ||
| D149 | Dielectric Strength (V/mil) short time, 1/8" thick | 395 |
| D150 | Dielectric Constant at 1 MHz | 3.2 |
| D150 | Dissipation Factor at 1 MHz | 0.005 |
| EOS/ESD S11.11 | Surface Resistivity (ohms/square) | > 1013 |
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.DURATRON is a registered trademark of Quadrant Engineering Plastic Products.
All values at 73°F (23°C) unless otherwise noted.
©
Copyright Boedeker Plastics, Inc.