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<p>In the development of new clean propellant formulations, the compatibility between the components and the matrix material directly affects the safety and performance stability of the propellant. This study used NATO STANAG 4147 standards as the evaluation criteria, employing differential scanning calorimetry (DSC) and thermogravimetric (TG) to systematically assess the compatibility between the applied material nitroguanidine (NQ) and common adhesives (PEG, PET, PBT, GAP, HTPB), curing agents (IPDI, HDI, TDI), plasticizers (Bu-NENA, DOP, DOS, A3), and high-energy solid fillers (AP, Al, HMX, RDX). The results indicate that among the adhesives (NQ/PEG, NQ/PET, NQ/PBT, NQ/HTPB, and NQ/GAP), NQ/PBT (Δ<i>T</i><sub>p</sub> = −&#xa0;10.55 K, ΔTML = 20.04%) promotes the thermal decomposition of NQ and reduces its stability, while the other adhesives show no significant chemical interaction with NQ. NQ exhibits good compatibility with curing agents NQ/IPDI and NQ/TDI, while the NQ/HDI system shows sensitive interactions. NQ demonstrates chemical compatibility with plasticizers NQ/Bu-NENA, NQ/DOP, and NQ/A3, but NQ/DOS exhibits average compatibility. Among solid fillers, NQ/AP, NQ/Al, and NQ/RDX exhibit good compatibility. NQ/HMX exhibits poor compatibility. A relatively complete compatibility evaluation system has been established, ranging from adhesives to high-energy fillers, providing rigorous thermal safety criteria for the selection and optimization of components in NQ-containing clean propellant formulations.</p>

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Thermal safety compatibility evaluation of nitroguanidine with key components of solid rocket propellants: based on the STANAG 4147 standard

  • 期刊论文

  • 发表日期：

    2026年4月24日

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  • Kai Yao,
  • Xiandie Zhang,
  • Zhijie Fan,
  • Wei Wang,
  • Bizheng Chen,
  • Heng Xu,
  • Xiaode Guo

摘要

In the development of new clean propellant formulations, the compatibility between the components and the matrix material directly affects the safety and performance stability of the propellant. This study used NATO STANAG 4147 standards as the evaluation criteria, employing differential scanning calorimetry (DSC) and thermogravimetric (TG) to systematically assess the compatibility between the applied material nitroguanidine (NQ) and common adhesives (PEG, PET, PBT, GAP, HTPB), curing agents (IPDI, HDI, TDI), plasticizers (Bu-NENA, DOP, DOS, A3), and high-energy solid fillers (AP, Al, HMX, RDX). The results indicate that among the adhesives (NQ/PEG, NQ/PET, NQ/PBT, NQ/HTPB, and NQ/GAP), NQ/PBT (ΔTp = − 10.55 K, ΔTML = 20.04%) promotes the thermal decomposition of NQ and reduces its stability, while the other adhesives show no significant chemical interaction with NQ. NQ exhibits good compatibility with curing agents NQ/IPDI and NQ/TDI, while the NQ/HDI system shows sensitive interactions. NQ demonstrates chemical compatibility with plasticizers NQ/Bu-NENA, NQ/DOP, and NQ/A3, but NQ/DOS exhibits average compatibility. Among solid fillers, NQ/AP, NQ/Al, and NQ/RDX exhibit good compatibility. NQ/HMX exhibits poor compatibility. A relatively complete compatibility evaluation system has been established, ranging from adhesives to high-energy fillers, providing rigorous thermal safety criteria for the selection and optimization of components in NQ-containing clean propellant formulations.