PBI Picado
La fibra PBI (polibencimidazol) es una fibra avanzada de alto rendimiento conocida por su excepcional estabilidad térmica, resistencia inherente a las llamas y excelente resistencia química. Con uno de los valores de índice de oxígeno limitante (LOI) más altos de cualquier fibra orgánica, el PBI no se derrite, gotea ni mantiene la combustión, lo que la hace ideal para entornos de alta temperatura y exposición a las llamas.
Además de su rendimiento térmico, el PBI ofrece una excelente retención de resistencia a temperaturas elevadas y una durabilidad a largo plazo en condiciones industriales adversas, manteniendo la integridad donde la mayoría de las fibras orgánicas se degradan rápidamente.
Las fibras PBI de Rocket-Fibers se fabrican en los Estados Unidos y están disponibles en longitudes de corte de precisión y en formas de filamento continuo para soportar una amplia gama de aplicaciones, desde textiles protectores y medios de filtración hasta compuestos de alta temperatura y usos industriales especializados. Nuestras ofertas de PBI cumplen con la Enmienda Berry para el Departamento de Defensa de EE. UU. y programas relacionados cuando se solicita la documentación. Los Certificados de Análisis (COA) a nivel de lote, incluida la trazabilidad completa del lote, están disponibles bajo petición.
About This Item
PBI Resistance Guide
PBI (polybenzimidazole) fiber offers exceptional thermal stability and inherent flame resistance, making it one of the most heat-resistant organic fibers available. It does not melt or drip and maintains mechanical integrity at elevated temperatures. PBI also provides strong chemical resistance and excellent long-term durability in extreme environments. However, like most high-performance organic fibers, it can degrade under prolonged UV exposure.
This fiber will slowly degrade with long term exposure to UV light.
Acid: Excellent resistant to most acids
Alkali: Good resistance to most alkalis
Organic Solvent: Generally compatible with a variety of organic solvents.
Continuous Operating Temperature Range (°C): 260
Short Term Exposure (°C): 400+
Melt Temperature (°C): N/A
Chopped PBI Technical Specifications
Length
(mm) |
Moisture |
Tenacity (g/d) |
Denier Per Filament
|
|---|---|---|---|
3.0 | 11.8 % - 19.8 % | 2.30 - 2.70 | 1.25 - 1.75 |
6.0 |
11.8 % - 19.8 % | 2.30 - 2.70 | 1.25 - 1.75 |
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Product Details
Made in the USA from premium polybenzimidazole (PBI) fiber
Berry Amendment compliant
Precision chopped to 3 mm (1/8") or 6 mm (1/4") standard lengths
Custom cut lengths available upon request
Supplied clean & binder-free
Natural golden-brown color
Packaging & Quantity
Product Performance
Inherently flame resistant — will not melt, drip, or support combustion, even under direct flame exposure.
Retains mechanical strength at temperatures where most organic fibers rapidly degrade.
Features an exceptionally high Limiting Oxygen Index (LOI), requiring elevated oxygen levels to sustain combustion.
Delivers outstanding thermal stability and dimensional retention in continuous high-heat environments.
Resists chemical exposure and long-term thermal aging.
Improves composite heat resistance, char stability, and structural performance without significant weight gain.
PBI Property Guide
The table below represents the nominal mechanical properties of PBI. PBI fibers are precision cut to different lengths, optimized for specific products and applications.
| Property | Unit Of Measure | Data |
|---|---|---|
| DPF | denier | 1.5 |
| Tenacity | g/d | 2.7 |
| Breaking Elongation | % | 27.0% |
| Finish Level | % | 0.35% |
| Initial Modulus | g/d | 45 |
| Specific Gravity | g/cm3
|
1.4 |
| Moisture Regain | % | 15.0% |
| Limiting Oxygen Index | % | >41.0% |
| Hot Air Shrinkage | % | < 1.0% |
| Specific Heat | BTU/lb. F | 0.30 |
| Surface Area Resistivity | ohms/square | 1xE10 |
| Thermal Conductivity | BTU/hr.ft.F | 0.022 |
Suggested Applications
Aerospace and defense composite reinforcement
Thermal barrier and heat-shield materials
Fire-resistant industrial insulation
High-temperature filtration media
Protective textile and safety reinforcement
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