锌/高锰酸钾烟火药剂燃烧机理的研究

Study of the Combustion Mechanism of Zn/KMnO Pyrotechnic Composition.

作者信息

Polis Mateusz, Szydło Konrad, Zakusylo Roman, Hawelek Lukasz, Stolarczyk Agnieszka, Jarosz Tomasz

机构信息

Explosive Techniques Research Group, Łukasiewicz Research Network-Institute of Industrial Organic Chemistry, 42-693 Krupski Młyn, Poland.

Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, 44-100 Gliwice, Poland.

出版信息

Molecules. 2023 Jul 29;28(15):5741. doi: 10.3390/molecules28155741.

DOI:10.3390/molecules28155741

PMID:37570712

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10420014/

Abstract

This work aims to investigate the combustion mechanism for a pyrotechnic delay composition (PDC), consisting of zinc powder as a fuel and KMnO as an oxidising agent. For this purpose, the compositions were thermally conditioned at several set temperatures, chosen based on our previous work. Tests were also performed for post-combustion residues obtained via combustion of the PDCs in a manometric bomb. The samples were examined by scanning electron microscopy (SEM), Raman spectroscopy and X-ray diffractometry (XRD). Furthermore, the obtained results were correlated with previous studies by the authors and compared with data available in the literature. On the basis of tests carried out for thermally conditioned samples, a combustion mechanism was determined for Zn/KMnO as a function of temperature. The results show that the combustion process dynamics are independent of equilibrium ratio and limited mainly by diffusion of liquid fuel into the solid oxidising agent. Moreover, it has been revealed that Raman spectroscopy can be effectively used to determine combustion mechanisms for pyrotechnic compositions.

摘要

这项工作旨在研究一种烟火延迟组合物（PDC）的燃烧机理，该组合物由作为燃料的锌粉和作为氧化剂的高锰酸钾组成。为此，根据我们之前的工作，将组合物在几个设定温度下进行热调节。还对通过在压力弹中燃烧PDC获得的燃烧后残留物进行了测试。通过扫描电子显微镜（SEM）、拉曼光谱和X射线衍射仪（XRD）对样品进行了检查。此外，将获得的结果与作者之前的研究进行了关联，并与文献中的数据进行了比较。基于对热调节样品进行的测试，确定了Zn/KMnO作为温度函数的燃烧机理。结果表明，燃烧过程动力学与平衡比无关，主要受液体燃料向固体氧化剂中的扩散限制。此外，已经表明拉曼光谱可有效地用于确定烟火组合物的燃烧机理。