|本期目录/Table of Contents|

[1]董海燕,郭蓉,伍波,等.1,4-二硝基咪唑的溶解性能、热性能和感度[J].火炸药学报,2019,42(3):251-256.[doi:10.14077/j.issn.1007-7812.2019.03.007]
 DONG Hai-yan,GUO Rong,WU Bo,et al.Solubility, Thermal Property and Sensitivity of 1,4-Dinitroimidazole[J].,2019,42(3):251-256.[doi:10.14077/j.issn.1007-7812.2019.03.007]
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1,4-二硝基咪唑的溶解性能、热性能和感度()
     
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《火炸药学报》[ISSN:1007-7812/CN:61-1310/TJ]

卷:
42卷
期数:
2019年第3期
页码:
251-256
栏目:
出版日期:
2019-06-30

文章信息/Info

Title:
Solubility, Thermal Property and Sensitivity of 1,4-Dinitroimidazole
作者:
董海燕 郭蓉 伍波 段晓惠 裴重华
西南科技大学环境友好能源材料国家重点实验室, 四川 绵阳 621010
Author(s):
DONG Hai-yan GUO Rong WU Bo DUAN Xiao-hui PEI Chong-hua
State Key Laboratory of Environment-feriendly Energy Materials, Southwest University of Science and Technology, Mianyang Sichuan 621010, China
关键词:
物理化学14-二硝基咪唑(14-DNI)溶解度热性能感度硝基咪唑类化合物重力法
Keywords:
physical chemistry14-dinitroimidazole(14-DNI)solubilitythermal propertysensitivitynitroimidazolesgravimetric method
分类号:
TJ55;O64
DOI:
10.14077/j.issn.1007-7812.2019.03.007
文献标志码:
-
摘要:
为得到1,4-二硝基咪唑(1,4-DNI)的理化性能,用重力法测定了1,4-DNI在4种不同溶剂(丙酮、乙酸乙酯、甲醇、乙醇)中的溶解度,用溶解度数据估算了1,4-DNI的标准溶解焓、标准溶解熵和标准吉布斯自由能,探究了1,4-DNI在不同溶剂中的结晶形貌;通过差示扫描量热法(DSC)和热重法(TG)研究了1,4-DNI的热性能,用Kissinger法计算了其表观活化能;测试了1,4-DNI的机械感度。结果表明,1,4-DNI在4种溶剂中的溶解度均随温度的升高而增加,其溶解是一个非自发的吸热过程,溶解度值由大到小的顺序为:丙酮 > 乙酸乙酯 > 甲醇 > 乙醇;用丙酮和乙酸乙酯作溶剂,采用冷却结晶法得到的晶体结晶品质优于甲醇和乙醇,结晶产率和纯度也较高;当升温速率为10 K/min时,1,4-DNI的熔融温度为95.0℃,分解峰温为167.6℃,热重变化的温度范围为134.7~340.8℃,总失重率为94%,其表观活化能为119.26 kJ/mol;1,4-DNI实测撞击感度大于20 J,摩擦感度为60 N。
Abstract:
To obtain the physicochemical properties of 1,4-dinitroimidazole (1,4-DNI), the solubility of 1,4-DNI in four different solvents (acetone, ethyl acetate, methanol and ethanol) was determined by the gravimetric method, which was employed to estimate the standard enthalpy of dissolution, standard entropy of dissolution, and standard Gibbs free energy of dissolution. The crystallization morphologies of 1,4-DNI in different solvents were investigated. Thermal properties of 1,4-DNI were studied by differential scanning calorimetry (DSC) and thermogravimetry (TG), and the apparent activation energy was calculated by Kissinger’s method. The mechanical sensitivity of 1,4-DNI was also tested. The results show that the solubility of 1,4-DNI in four solvents increases with the increase of temperature, and its dissolution is a non-spontaneous and endothermic process. The solubility of 1,4-DNI is ranked as acetone > ethyl acetate > methanol > ethanol. The quality, yield and purity of 1,4-DNI crystal obtained by cooling in acetone and ethyl acetate are higher than those in methanol and ethanol. When the heating rate is 10 K/min, the melting temperature and decomposition peak temperature of 1,4-DNI are 95.0℃ and 167.6℃, respectively. The temperature change range of TG is 134.7-340.8℃ with the total mass loss rate of 94%, and the apparent activation energy is 119.26 kJ/mol. The impact sensitivity of 1,4-DNI determined experimentally is more than 20 J and its friction sensitivity is 60 N.

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备注/Memo

备注/Memo:
收稿日期:2018-9-26;改回日期:2018-11-12。
基金项目:国家自然科学基金(No.11572270)
作者简介:董海燕(1993-),女,硕士研究生,从事共晶含能材料研究。E-mail:923148865@qq.com
通讯作者:段晓惠(1970-),女,教授,从事含能材料结晶及理论模拟研究。E-mail:duanxiaohui@swust.edu.cn
更新日期/Last Update: 1900-01-01