火炸药学报2017，Vol.40Issue(6)：43-48,6.DOI:10.14077/j.issn.1007-7812.2017.06.007
3,6-二肼基-1,2,4,5-四嗪二硝基水杨酸盐的合成、热分解及生成焓研究
Study on Preparation ,Thermal Behavior and Enthalpy of Formation of 3 ,6-Dihydrazine-1 ,2 ,4 ,5-tetrazine-3 ,5-dinitrosalicylic Acid Salt
摘要
Abstract
3 ,6-Dihydrazine-1 ,2 ,4 ,5-tetrazine- 3 ,5-dinitrosalicylic acid salt dihydrate (DHT · 2DNS · 2H2O ) was synthesized using 3 ,6-dihydrazine-1 ,2 ,4 ,5-tetrazine (DHT ) and 3 ,5-dinitrosalicylic acid (DNS ) as raw materials and its structure was characterized by nuclear magnetic resonance spectroscopy ,infrared spectroscopy ,element a-nalysis and thermogravimetry . The thermal behavior and thermal decomposition products of anhydrous DHT · 2DNS were studied by differential scanning calorimetry (DSC) and thermogravimetry combined with Fourier trans-form infrared analysis (TG-FTIR) . The constant-volume combustion heat (Δc U ) was determined by an oxygen bomb calorimeter and the standard molar enthalpy of combustion (Δc H ㈠m ) and the standard molar enthalpy of forma-tion (Δf H ㈠m ) were estimated via the Δc U .The results show that the thermal stability of DHT · 2DNS is higher than DHT and its thermal decomposition process can be divided into four stages .Firstly ,part of hydroxyl ,nitro and car-boxyl in DNS ion of DHT · 2DNS were removed and hydrazine was decomposed ;then ,the tetrazine ring and groups on the benzene ring was dissociated ,thirdly ,benzene ring was broken ;finally ,the benzene residues kept decompo-sing .The values of Δc U ,Δc H ㈠m and Δf H ㈠m of DHT · 2DNS are ( - 11938 .17 ± 25 .33)J/g ,( - 7119 .77 ± 15 .16)kJ/mol and ( - 1177 .2 ± 11 .14)kJ/mol ,respectively .关键词
3,6-二肼基四嗪/3,5-二硝基水杨酸/差示扫描量热法/热重-红外联用/热分解行为/四嗪类化合物Key words
3,6-dihydrazine-1,2,4,5-tetrazine/3,5-dinitrosalicylic acid/differential scanning calorimetry/TG-FT-IR/thermal decomposition behavior/tetrazine compound分类
军事科技引用本文复制引用
陈湘,张聪,严彪,郭兆琦,高红旭,马海霞..3,6-二肼基-1,2,4,5-四嗪二硝基水杨酸盐的合成、热分解及生成焓研究[J].火炸药学报,2017,40(6):43-48,6.基金项目
国家自然科学基金(No.21673179 （）
No .21373161 （）
No .21504067) （）
