Wang Zhi, Jin Shaohua, Gu Guanghui, Chao Hui, Qian Shichuan, Xu Yinguang, Wang Fan, Wei Yulin, Zhao Xinping, Lu Zhiyan, Chen Shusen, Chen Kun
School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100811, China.
Gansu Yinguang Chemical Industry Group Co., Ltd., Baiyin, 730900, China.
ACS Omega. 2024 Jul 16;9(30):32687-32696. doi: 10.1021/acsomega.4c02316. eCollection 2024 Jul 30.
Given its role as a pivotal intermediate in octogen production, the thermal safety of DPT is of paramount importance due to its significant thermal hazard. To assess the potential thermal hazard associated with its decomposition, a nonisothermal DSC experiment and an ARC test were conducted. For the acquisition of more precise thermal decomposition kinetic parameters, the impact of various crucible types on the experimental outcomes was scrutinized. The DSC results indicate that the precise thermal decomposition process of DPT, an autocatalytic decomposition material, can be accurately ascertained by using a high-pressure sealed crucible test. The authentic thermal decomposition process of DPT encompasses two critical reactions: the decomposition of DPT itself and the secondary reaction and decomposition of its byproducts. A robust thermal decomposition kinetic model was established, integrating the findings from the DSC test results. Subsequently, the risk of thermal explosion during DPT storage was simulated by using a kinetic numerical simulation approach.
鉴于其在八聚物生产中作为关键中间体的作用，由于其显著的热危险性，DPT的热安全性至关重要。为了评估与其分解相关的潜在热危险性，进行了非等温DSC实验和ARC测试。为了获得更精确的热分解动力学参数，仔细研究了各种坩埚类型对实验结果的影响。DSC结果表明，通过高压密封坩埚测试可以准确确定自催化分解材料DPT的精确热分解过程。DPT的真实热分解过程包括两个关键反应：DPT自身的分解以及其副产物的二次反应和分解。结合DSC测试结果建立了一个可靠的热分解动力学模型。随后，采用动力学数值模拟方法模拟了DPT储存期间的热爆炸风险。
