RF 2535 A/B is a flame-retardant, high-performance epoxy resin system designed specifically for filament winding applications where superior mechanical strength, thermal stability, and fire resistance are required. The formulation offers a balanced viscosity profile (Part A: 15,120 cPs, Part B: 378 cPs) and a long working time (pot life > 8 hours @ 25°C), making it well-suited for precision winding processes. With a glass transition temperature (Tg) of 145°C, tensile strength of 11,000 psi, and tensile modulus of 798 ksi, RF 2535 delivers outstanding structural integrity for composite parts under demanding conditions.

This system meets FAR 25.853 flame resistance requirements, demonstrating zero drip, zero flame time, and minimal burn length (0.3 in), making it ideal for safety-critical applications. The cured resin exhibits excellent dimensional stability (low CTE), high hardness (Shore D 88), and strong resistance to thermal and mechanical stresses, ensuring reliable long-term performance in aerospace and industrial environments.