PBO Filament Yarn
Product Overview
PBO (Poly(p-phenylene-2,6-benzobisoxazole)) filament yarn is one of the highest performance organic fibers in the world, featuring ultra-high tensile strength, high modulus, excellent heat resistance, inherent flame retardancy and outstanding chemical stability. It is widely used in aerospace, defense, high-temperature filtration, protective equipment and advanced composite materials.
Available Specifications
- Fineness Range: 278-3300 dtex (≈ 250-3000 Denier)
- Standard Modulus: AS Grade
- High Modulus: HM Grade
- Filament Count: Customized according to application (e.g. 100f-2000f)
- Other grades and specifications are available on request.
Typical Technical Data (Reference)
| Property | AS Grade (Standard Modulus) |
HM Grade (High Modulus) |
Test Method |
|---|---|---|---|
| Linear Density (dtex) | 278-1670 (typical) | 273-3270 (typical) | – |
| Filament Type | Continuous Filament | Continuous Filament | – |
| Tensile Strength (cN/dtex) | ≥ 37 | ≥ 37 | ASTM D2256 |
| Tensile Modulus (cN/dtex) | ≥ 1150 | ≥ 1720 | ASTM D2256 |
| Elongation at Break (%) | 3.0-3.5 | 2.0-2.5 | ASTM D2256 |
| Decomposition Temperature | ≥ 650°C | ≥ 650°C | TGA / DSC |
| Glass Transition Temperature (Tg) | ≈ 375°C | ≈ 375°C | DSC |
| Limiting Oxygen Index (LOI) | ≈ 68 | ≈ 68 | ASTM D2863 |
| Moisture Regain (%) | ≤ 2.0 | ≤ 0.6 | ASTM D570 |
| Color | Golden Yellow (others on request) | Golden Yellow (others on request) | – |
Key Features
- Ultra-high strength and modulus
- Excellent heat resistance
- Inherent flame retardancy (high LOI)
- Outstanding chemical stability
- Low moisture absorption
- Good dimensional stability
- Customizable specifications
Typical Applications
- Aerospace & Aviation: Aircraft structures, high-performance composites
- Defense & Military: Ballistic protection, armor reinforcement
- Protective Equipment: Firefighting suits, heat-resistant clothing
- High-Temperature Filtration: Filter bags, filter cloth, industrial filtration
- Advanced Composites: High-performance composites, structural reinforcement
Sample & Global Supply
Samples are available. Customized specifications and global supply are available on request.
Technical Note
The above data are typical values for reference only. Final values are subject to our factory’s official TDS.