Nitrogen heterocycles as Nitrogen-rich energetic material has been widely popularized due to their desirable properties like low sensitivities, excellent stability, and lower environmental impact, less erosive and less toxic combustion gases, especially in gun propellant application areas. The focus of this study is on investigating interaction mechanism of 1 H-tetrazole (1 H-TZ) and nitrocellulose (NC) by kinetics methods and TG-DSC-FTIR analysis. The mixture (NC-TZ) between 1 H-TZ and NC was prepared by means of physical blending. DSC experiments indicated that the open and closed environment can generate different and important influence on the chemical reaction between 1 H-TZ and NC. Combined with the change of activation energy, it illustrated that the gas 2 H-tetrazole, the isomer of 1 H-TZ, had a significant influence on the thermal decomposition of NC. In comparison with kinetic models of NC and NC-TZ, it can be found that the addition of 1 H-TZ mainly affected the contribution factor and m value in the first stage. The value of m decreased from 1.00 to 0.15, meanwhile, the contribution factor was decreased from 0.50 to 0.12. It showed that NO₂, the initial decomposition product of NC, had taken part in the thermal decomposition process of 1 H-TZ. TG-DSC-FTIR experiments indicated that there was a chemical reaction between 2 H-tetrazole and the initial decomposition product of NC, NO₂, to form CO, N₂O and HN₃.

氮杂环化合物作为富氮含能材料，由于具有灵敏度低、稳定性好、环境影响小、腐蚀性低、燃烧气体毒性小等优良性能而得到广泛应用，尤其是在火炮推进剂应用领域。本研究的重点是通过动力学方法和 TG-DSC-FTIR 分析研究 1 H-四唑 (1 H-TZ) 和硝化纤维素 (NC) 的相互作用机制。1 H-TZ与NC的混合物(NC-TZ)采用物理共混法制备。DSC实验表明，开放环境和封闭环境对1 H-TZ与NC的化学反应产生不同且重要的影响。结合活化能的变化，说明气体 2 H-四唑， 1 H-TZ的异构体，对NC的热分解有显着影响。对比NC和NC-TZ的动力学模型可以发现，1 H-TZ的加入主要影响贡献因子和第一阶段的m值。m值从1.00下降到0.15，同时贡献因子从0.50下降到0.12。表明NC的初始分解产物NO _{2参与了1 H-TZ的热分解过程。}TG-DSC-FTIR实验表明，2 H-四唑与NC的初始分解产物NO ₂发生化学反应，生成CO、N ₂ O和HN ₃。