Industrial Grade Pre-Oxidized Fiber 1.5D×51mm | Long Term Heat Resistant Up To 260℃ Non-Flammable Raw Materia

Our Pre-Oxidized PAN Staple Fiber 1.5D ×51mm is a high-performance thermally stabilized fiber engineered from premium polyacrylonitrile (PAN) precursor through controlled pre-oxidation treatment. It features a non-melting, non-flammable ladder molecular structure, delivering exceptional flame resistance, long-term high-temperature stability, low shrinkage, and excellent spinnability.

Ideal for spinning, nonwovens, needle-punched felts, composites, and fire-retardant applications, this fiber combines consistent fineness, uniform length, and reliable batch stability to support mass production and high-quality end products.

• Extreme Flame Retardancy With an ultra-high Limiting Oxygen Index (LOI >45%), our pre-oxidized fiber is inherently non-combustible. It will not ignite, melt, drip, or support flame spread, making it a top-tier material for passive fire protection and safety-critical components.
• Long-Term High-Temperature Stability Capable of continuous service at temperatures up to 260°C and short-term exposure to extreme heat without deformation or decomposition. It maintains structural integrity, dimensional stability, and low shrinkage even under prolonged thermal stress.
• Excellent Processability & Spinnability Precisely cut to 1.5D ×51mm with uniform fineness and smooth surface, the fiber opens smoothly, minimizes neps and dust, and runs reliably on spinning, carding, and nonwoven production lines. It blends well with other fibers and adapts to automated manufacturing.
• Outstanding Physical & Chemical Stability Resists oxidation, acid, alkali, and corrosion; low moisture absorption and good electrical insulation. Lightweight yet mechanically durable, it reinforces composites while reducing overall weight.
• Consistent Quality & Uniform Black Color Produced with strict quality control, the fiber features a pure, consistent black color with no spots or unevenness. Batch-to-batch uniformity ensures stable performance and clean appearance in final products.
• Eco-Friendly & Safe Free of halogens and toxic additives, it produces minimal smoke and no hazardous droplets when exposed to fire, complying with global environmental and industrial safety standards.

• Fire Retardant Textiles: Fireproof fabrics, thermal barriers, welding blankets, firefighting gear, high-temperature gloves
• Automotive & Rail: Interior insulation, heat shields, gaskets, sound deadening felts, fire barriers
• Industrial Filtration: High-temp filter cloth, flue gas filtration, dust collection media
• Thermal Insulation: Industrial insulation felts, furnace linings, pipeline wrapping, construction fire barriers
• Composites & Reinforcement: Carbon fiber precursor, friction materials, gaskets, sealing components
• Aerospace & Energy: Battery insulation, electrical safety parts, high-performance lightweight components

• Manufacturer Direct Supply: Stable production capacity, competitive bulk pricing, no middleman markup
• Strict Quality Control: Full-spec testing for fineness, length, strength, heat resistance, and flame performance
• Flexible Support: Sample orders available, custom specifications welcome, fast lead times
• Reliable Logistics: Moisture-proof packaging, secure shipping, global delivery supported
• Technical Service: Professional material consultation and processing guidance available