CL-20/多孔生物质碳复合材料的热分解动力学及反应机理研究  

Thermal decomposition kinetics and mechanism of CL-20/porous biomass carbon composites

作　　者：范子君 安二海 秦清风 李庆霞 邓鹏 施胜楠 曹雄 FAN Zijun;AN Erhai;QIN Qingfeng;LI Qingxia;DENG Peng;SHI Shengnan;CAO Xiong(School of Environment and Safety Engineering,North University of China,Taiyuan 030051,China;Science and Technology on Applied Physical Chemistry Laboratory,Shaanxi Applied Physics and Chemistry Research Institute,Xi’an 710061,China)

机构地区：[1]中北大学环境与安全工程学院,太原030051 [2]陕西应用物理化学研究所应用物理化学实验室,西安710061

出　　处：《兵器装备工程学报》2025年第3期293-300,共8页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(21975227);中北大学研究生教育创新项目(20221862)。

摘　　要：通过溶剂挥发法将六硝基六氮杂异戊兹烷(CL-20)引入多孔生物质碳(pbC)中,制备了CL-20/pbC复合材料。研究了该复合材料的热分解行为,并采用Kissinger、Ozawa和atava-esták方法分别计算了动力学参数及机理函数,同时结合热重-质谱联用(TG-MS)技术进一步分析了CL-20/pbC的热分解机制。研究发现,CL-20/pbC的热分解峰温和活化能分别降低了2.4~4.4℃和14.06~14.73 kJ/mol,表明pbC具有较好的催化活性。其影响主要源于N—NO_(2)键断裂产生的NO_(2)可被pbC上的活性位点吸附,从而降低了NO_(2)含量并进一步促进了N—NO_(2)键的断裂;同时反应释放出来的热量也有助于CL-20残留物的持续分解。此外,对CL-20/pbC的安全性能进行了评估,结果表明CL-20与pbC之间的界面作用有效降低了CL-20的机械感度。该工作为CL-20在固体推进剂的进一步应用提供了参考。Hexanitrohexaazaisowurtzitane/porous biomass carbon(CL-20/Pbc)composites were prepared by incorporating CL-20 into pbC through solvent evaporation method.The thermal decomposition behavior of the composite material was studied,and the kinetic parameters and mechanism functions were calculated using the Kissinger,Ozawa,and atava-esták methods.Furthermore,the thermal decomposition mechanism of CL-20/pbC was analyzed using thermogravimetry-mass spectrometry(TG-MS)technology.It was found that the thermal decomposition of CL-20/pbC exhibited a reduction in both the peak temperature and activation energy by 2.4~4.4℃and 14.06~14.73 kJ/mol,respectively,indicating a significant catalytic activity of pbC.The influence of pbC on the pyrolysis process of CL-20 was mainly due to the fact that NO_(2) generated from the breakdown of the N-NO_(2) bonds could be adsorbed by the active sites on pbC.This continuous reduction in NO_(2) content further facilitated the breaking of N-NO_(2) bonds,while the heat generated from the reaction contributed to the sustained decomposition of residual CL-20.Additionally,the safety performance of CL-20/pbC was evaluated,and the results showed that the interface interaction between CL-20 and pbC effectively reduced the mechanical sensitivity of CL-20.This work provides a reference for further application of CL-20 in solid propellants.

关 键 词：CL-20 生物质碳 界面作用 热行为 机械感度 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ031.7[化学工程]