Liquid rubber epoxy blends for Inhibition of Composite Propellants

✍ Scribed by J. P. Agrawal; D. C. Gupta; M. P. Chouk; Yogesh Khare

• Book ID: 105355847
• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 568 KB
• Volume: 18
• Category: Article
• ISSN: 0721-3115
• DOI: 10.1002/prep.19930180308

✦ Synopsis

Abstract

Liquid rubbers, i.e. polysulphide (PS) and polybutadiene‐acrylic acid‐acrylonitrile (PBAN) have been blended with Dobeckot E‐4 (commercial novolak epoxy resin) in different proportions. These systems have been cured using polyamine/polyamide curing agents and were characterized using gel time, % elongation, tensile strength and bond strength with composite propellants, heat resistance, dioctyl adipate(DOA) absorption, oxygen index, thermal conductivity and brittleness temperature. The data generated for various characteristics indicate that the formulations E‐PS‐9 and E‐PBAN‐2 are promising inhibition systems for composite propellants.

The inhibition of composite propellants has been done with rayon thread impregnated with the formulations E‐PS‐9 and E‐PBAN‐2 using filament winding technique. The successful static evaluation of inhibited composite propellants at ambient, elevated and sub‐zero temperatures proves the suitability of these systems for inhibition.