Phenolic FRP Fire-Resistant Composite System

Phenolic FRP Fire-Resistant Composite System is an optimized phenolic resole resin system designed for manufacturing fire-resistant glass fiber reinforced composite panels, cladding, and structural components meeting the most stringent FST (fire, smoke, toxicity) requirements in enclosed public spaces. The system is specifically formulated for hand lay-up, wet winding, spray-up, and vacuum infusion processes, enabling fabrication of complex shapes not possible with press-molded phenolic compounds.

The composite system uses a medium-viscosity liquid resole (300-1,500 mPa·s at 25°C) with latent acid accelerator providing controlled ambient pot life (4-8 hours) and rapid cure at 80-120°C (oven or infrared). The cured glass/phenolic composite achieves LOI >55%, Ds,max (smoke density) <100 (ASTM E662), CO generation <1,000 ppm, and HCN <30 ppm under ASTM E1678 toxic gas test — performance required for aircraft interior FAR 25.853 and European railway EN 45545-2 HL3 compliance.

The system is designed to be processed in standard composite manufacturing facilities with ventilation upgrades for free phenol and formaldehyde handling. Ambient temperature lay-up with hot oven cure at 80-100°C eliminates the need for autoclave or press equipment, reducing capital investment for fire-resistant composite manufacturers. Applications span aircraft galleys, overhead bins, partition walls, train saloon panels, ship bulkheads, tunnel lining panels, and offshore topsides enclosed space structural panels.