摘要
用NBK型"拉瓦"量气测试系统研究了较高温度(160～200℃)下六硝基六氮杂异伍兹烷(CL-20)与硝化棉和硝化甘油双基吸收药(NC+NG)、环氧乙烷与四氢呋喃共聚醚(PET)、3,3-双叠氮甲基氧杂环丁烷与四氢呋喃共聚物(PBT)三种黏合剂的全分解过程,从放气规律和动力学的变化阐述了CL-20及其与三种黏合剂混合体系的热行为。结果表明:CL-20及其与(NC+NG)、PET、PBT三种黏合剂混合体系的热分解表观活化能分别为176.68,176.31,136.12,127.0kJ.mol-1。(NC+NG)黏合剂对CL-20的分解反应速度以及活化能几乎没有影响;CL-20初期分解的气体产物与PET和PBT两种黏合剂发生"非均相的气相/凝聚相反应",使得混合体系的分解表观活化能降低,分解速度显著加快。同时,(NC+NG)、PET和PBT没有改变CL-20分解的机理函数。
The thermal behaviors of CL-20 mixed with three binders （（ NC ＋ NG）, PET and PBT） at 160 -200 ℃ were investigated by NBK LAWA gasometric measuring system. The thermal behaviors were described from the changes of evolved gases and decomposition kinetics. Results show that the apparent activation energies of CL-20 and its mixed systems with （NC ＋ NG） ,PET and PBT are 176.68, 176.31,136.12 and 127.0 kJ . mol^-1, respectively. There is less influence of （NC ＋ NG） binder on the decomposition rate and the apparent activation energy of CL-20. The heterogeneous gas/condensed phase reactions between gas products from CL-20 initial decomposition and PET or PBT decrease appear activation energies and increase obviously decomposition rates for CL-20/PET and CL-20/PBT systems. While the mechanism functions of CL-20 decomposition in the three systems are not changed by （NC ＋ NG）, PET and PBT.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2010年第1期37-41,共5页
Chinese Journal of Energetic Materials
关键词
物理化学
热分解
量气法
动力学参数
混合体系热行为
physical chemistry
thermal decomposition
gasometric method
kinetic parameter
thermal behavior
