摘要
为探索固体推进剂燃烧催化剂,以1-甲基咪唑(MIM)、1-烯丙基咪唑(AIM)、硝酸铜和二氰胺钠(NaDCA)为原料,合成了一种新型双配体含能配合物[Cu(MIM)_(2)(AIM)_(2)](DCA)_(2),并通过红外光谱、X射线单晶衍射和粉末衍射对其结构进行了表征。采用差示扫描量热法(DSC)、热重分析法(TGA)对该含能配合物的热分解过程进行了分析,在40~500℃的温度范围内,DSC曲线中有一个吸热熔化峰(峰值温度:93.5℃)和一个放热分解峰(峰值温度:199.4℃)。对配合物进行了感度测试,其摩擦感度为240 N,撞击感度>40 J。对比研究了双配体的[Cu(MIM)_(2)(AIM)_(2)](DCA)_(2)与单配体的[Cu(MIM)_(4)](DCA)_(2)、[Cu(AIM)_(4)](DCA)_(2)对高氯酸铵(Ammonium Perchlorate,AP)热分解的催化作用,结果表明双配体的含能配合物具有更好的催化效果,使AP的分解峰值温度提前到285.6℃,放热量升高到2458 J·g^(-1),热分解活化能降低到81.5 k J·mol^(-1),表现出作为复合推进剂催化剂的潜力。
In order to explore the solid propellant combustion catalyst,a new type of bi‑ligand containing energy complex[Cu(MIM)_(2)(AIM)2](DCA)_(2) was synthesized from 1‑methylimidazole(MIM),1‑allyl imidazole(AIM),copper nitrate and NaDCA,and its structure was characterized by infrared spectroscopy,X‑ray single crystal diffraction and powder diffraction.The thermal decomposition process of the energetic complex was analyzed by DSC and TGA.Within the temperature range of 40-500℃,there is a melting peak(peak temperature is 93.5℃)and an exothermic decomposition peak(peak temperature is 199.4℃)in DSC curve.The sensitivity test of the complex shows that the friction sensitivity and impact sensitivity are low and the operation process is safe.Comparing the bi‑ligand[Cu(MIM)_(2)(AIM)_(2)](DCA)_(2) with[Cu(MIM)_(4)](DCA)_(2) and[Cu(AIM)_(4)](DCA)_(2) catalyses on the thermal decomposition of AP,the results show that the bi‑ligand complex has better catalytic effect,which advanced the exothermic peak temperature of AP by 88.8℃,increased the heat release from 782 J·g^(-1) to 2458 J·g^(-1),and lowered the thermal decomposition activation energy by 47.1 KJ·mol^(-1),implying the potential application as a composite propellant catalyst.
作者
钟野
李英
吴瑞强
李志敏
张建国
张同来
ZHONG Ye;LI Ying;WU Rui-qiang;LI Zhi-min;ZHANG Jian-guo;ZHANG Tong-lai(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China;Shanxi North Xing'an Chemical Industry Co.,LTD.,Taiyuan 030008,China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2021年第6期501-508,I0007,共9页
Chinese Journal of Energetic Materials
基金
国家自然科学基金资助(21805008)。
关键词
含能配合物
固体推进剂
燃烧催化剂
高氯酸铵
热分解
energetic complex
solid propellant
combustion catalyst
ammonium perchlorate
thermal decomposition
