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<p>This study herewith examines the impact of hydantoin resin (HR) as a bonding agent (BA) on the properties of four formulations of highly plasticized composite propellants (CP) with a nitrate ester-based novel active binder system. The research focuses on its effect on rheological, mechanical, thermal, sensitivity and ballistic characteristics of propellants. Reduced de-wetting and improved cohesivity between binder and filler exhibit paramount dependency on optimization of BA content. Results indicate that increasing HR content significantly improves tensile strength, modulus, and thermal stability, while slightly reducing burn rate and % elongation. Additionally, lower viscosity and decreased sensitivity toward friction and impact are observed in HR formulations. This pursuit provides valuable insight for bolstering performance, safety and the service life of CP, particularly for defense applications.</p> Graphical Abstract <p></p>

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Reduced dewetting in nitrate ester binder composites by hydantoin resin bonding agents

  • 期刊论文

  • 发表日期：

    2026年5月21日

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  • Nellutla Pandarinath Rao,
  • S Nandagopal,
  • Sunil Jain,
  • Kshitija Sanjay Vaidya,
  • Balasubramanian Kandasubramanian

摘要

This study herewith examines the impact of hydantoin resin (HR) as a bonding agent (BA) on the properties of four formulations of highly plasticized composite propellants (CP) with a nitrate ester-based novel active binder system. The research focuses on its effect on rheological, mechanical, thermal, sensitivity and ballistic characteristics of propellants. Reduced de-wetting and improved cohesivity between binder and filler exhibit paramount dependency on optimization of BA content. Results indicate that increasing HR content significantly improves tensile strength, modulus, and thermal stability, while slightly reducing burn rate and % elongation. Additionally, lower viscosity and decreased sensitivity toward friction and impact are observed in HR formulations. This pursuit provides valuable insight for bolstering performance, safety and the service life of CP, particularly for defense applications.

Graphical Abstract