High-Temperature Flame Retardant Carbonized Fabric for Industrial & Aerospace Applications
Carbonized fabric made from pre-oxidized PAN fiber represents a new class of high-performance flame retardant materials. Known for their exceptional resistance to fire, heat, chemicals, and electricity, these fabrics are ideal for use in aerospace, automotive, energy storage, and industrial thermal protection applications.
How Carbonized Fabric Is Made?
1. Pre-Oxidation
PAN fibers are oxidized at 200–300°C in air to form a thermally stable ladder polymer with a high Limiting Oxygen Index (LOI) of 40–60%.
2. Carbonization & Graphitization
- Low-Temperature Carbonization: 600–1500°C in nitrogen to remove non-carbon elements, producing >90% carbon content.
- High-Temperature Graphitization: 2500–3000°C in argon or helium to achieve >99% carbon, forming graphite-like crystalline structures.
3. Post-Processing
Techniques such as needle-punching and weaving are used to convert fibers into thermal insulation pads, fireproof cloths, and composite reinforcemen
What Is Pre-Oxidized Fiber Carbonized Fabric?
Pre-oxidized fiber is created by treating polyacrylonitrile (PAN) precursor fibers in an oxygen-rich environment. These are then carbonized or graphitized at high temperatures to produce fabrics with over 90%–99% carbon content, forming disordered graphite or crystalline structures.
Key Features of Carbonized Fabric
- Flame Retardant: LOI up to 50%; non-combustible, does not drip or melt.
- High Temperature Resistant: Operates continuously at 220°C, withstands short-term exposure to over 400°C.
- High Strength & Lightweight: Tensile strength up to 3.8 GPa, density ~1.3–1.4 g/cm³.
- Chemical Stability: Resistant to acids, alkalis, and hydrolysis.
- Electrical Insulation: Dielectric strength exceeds 100,000 volts/mm².
- Eco-Friendly: Halogen-free, non-toxic, no harmful smoke emissions.
Carbonized Fabric Technical Parameters
| Parameter Category | Technical Specifications |
| Areal Density (GSM） | 200 g/m² |
| Thickness (mm) | 1.4-1.8 |
| Density (g/cm³) | 1.35-1.45 |
| Carbon Content | ≥92% (Low-Temp Carbonization) / ≥99% (High-Temp Graphitization) |
| Limiting Oxygen Index (LOI) | ≥45% |
| Long-Term Temperature Resistance | 220°C (Continuous) / 400°C (Short-Term) |
| Thermal Decomposition Temp | ≥640°C |
| Thermal Conductivity (W/(m·K)) | ≤0.038 |
| Tensile Strength (Warp) |
≥3.2 GPa |
| Tensile Strength (Weft) |
≥2.8 GPa |
| Elongation at Break |
≤2.5% |
| Tear Strength (N) |
≥50 (Trapezoidal Method) |
| Volume Resistivity (Ω·cm) |
1.0×10⁻³ - 1.0×10⁻² (Adjustable based on carbonization process) |
| Breakdown Voltage (kV/mm) |
≥10 |
Carbonized Fabric Industrial Applications
- Fire Protection: Firefighter gear, fire blankets, face shields, and heat-resistant covers.
- Military & Law Enforcement: Flame-resistant vests, blast suits, and thermal covers.
- Energy Storage: Battery electrode materials, thermal insulation in battery modules.
- Industrial Safety: Welding suits, furnace protection, thermal curtains, and heat shields.
- Aerospace & Automotive: Aircraft brake pads, engine insulation, lightweight carbon parts.
- Environmental & Chemical: Catalyst carriers, desulfurization/denitrification filters, corrosion-resistant liners.
Why Choose Carbonized Fabric?
Whether you're manufacturing advanced composites or developing flame-retardant solutions, carbonized fabric from pre-oxidized PAN fiber offers unmatched thermal protection, mechanical strength, and environmental safety. It's a smart, future-ready choice for demanding industrial applications.
