十二氢十二硼酸双四乙基铵的点火与燃烧特性

潘欣欣, 黄雪峰, 李盛姬, 杨燕京, 张建侃, 姜宇鹍, 沈剑锋, 郭艳辉

火炸药学报 ›› 2019, Vol. 42 ›› Issue (6) : 614-620.

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  • 主管：中国科学技术协会

    主编：魏 卫

    ISSN 1007-7812

    　

  • 主办：中国兵工学会与中国兵器工业第204研究所共同

    出版：《火炸药学报》 编辑部

    CN 61-1310/TJ

《火炸药学报》1978年创刊，国内外公开发行。是由中国科协主管、中国兵工学会与中国兵器工业第二〇四研究所共同主办的学术刊物, 是我国创刊最早的火炸药技术专业期刊。
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火炸药学报 ›› 2019, Vol. 42 ›› Issue (6) : 614-620. DOI: 10.14077/j.issn.1007-7812.201907003

十二氢十二硼酸双四乙基铵的点火与燃烧特性

  • 潘欣欣, 黄雪峰, 李盛姬, 杨燕京, 张建侃, 姜宇鹍, 沈剑锋, 郭艳辉
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Ignition and Combustion Characteristics of Tetraethylammonium Dodecahydrododecaborates

  • PAN Xin-xin, HUANG Xue-feng, LI Sheng-ji, YANG Yan-jing, ZHANG Jian-kan, JIANG Yu-kun, SHEN Jian-feng, GUO Yan-hui
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摘要

为了探索十二氢十二硼酸双四乙基铵（Et4N）2B12H12的点火与燃烧特性，采用激光点火实验测定了当量直径为1.11 mm试样的点火与燃烧参数，同时采用热重-质谱联用技术测定了材料在氮气和空气气氛中的热解行为，探究了其燃烧过程机制。结果表明，十二氢十二硼酸双四乙基铵具有较高的热稳定性，在氮气及空气中加热至300℃以上发生裂解，在裂解过程中材料会同步氧化，加热至约650℃时材料强烈氧化增重；该材料的点火燃烧性能较好，激光点火能量密度为4.72×106 W/m2时其点火延迟时间为45.8 ms，总燃烧时长为2.467 s，燃烧过程中样品表面温度在1 600~1 800℃；结合热解行为推断其在燃烧过程中不仅释放出H2，同时发生骨架裂解释放出碳氢燃气，碳氢燃气燃烧可导致燃烧过程中出现明显的烟气痕迹。

Abstract

In order to understand the ignition and combustion characteristics of tetraethylammonium dodecahydrododecaborate, laser ignition experiments were conducted on a sample with an equivalent diameter of 1.11 mm to determine its ignition and combustion parameters. Combining with the pyrolysis behaviors in both nitrogen and air atmospheres achieved by thermogravimetric analysis/mass spectrometry, the combustion mechanism of tetraethylammonium dodecahydrododecaborate was also evaluated. The results show that tetraethylammonium dodecahydrododecaborate, which cracks at above 300℃in both nitrogen and air atmosphere,has a good thermal stability. During the cracking process, the material is oxidized simulaneously and oxidized strongly and gain weight when heated to 650℃.This compound can be ignited easily in air, and its ignition delay time is determined to be 45.8 ms with the ignition power density of 4.72×106 W/m2, and the total burning time is 2.467 s.The surface temperature is 1 600-1 800℃ during the combustion process. It is proposed that,in the combustion process of tetraethylammonium dodecahydrododecaborate, both H2 release and skeleton cracking occur, and the combustion of the gaseous hydrocarbon compounds formed from skeleton cracking could lead to obvious traces of smoke.

关键词

材料科学 / 多硼烷离子化合物 / 十二硼十二氢酸双四乙基铵 / 固体燃料 / 燃烧特性

Key words

material science / polyhydroborate anion compound / tetraethylammonium dodecahydrododecaborate / solid fuel / combustion characteristics

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潘欣欣, 黄雪峰, 李盛姬, 杨燕京, 张建侃, 姜宇鹍, 沈剑锋, 郭艳辉. 十二氢十二硼酸双四乙基铵的点火与燃烧特性. 火炸药学报. 2019, 42(6): 614-620 https://doi.org/10.14077/j.issn.1007-7812.201907003
PAN Xin-xin, HUANG Xue-feng, LI Sheng-ji, YANG Yan-jing, ZHANG Jian-kan, JIANG Yu-kun, SHEN Jian-feng, GUO Yan-hui. Ignition and Combustion Characteristics of Tetraethylammonium Dodecahydrododecaborates. Chinese Journal of Explosives & Propellants. 2019, 42(6): 614-620 https://doi.org/10.14077/j.issn.1007-7812.201907003
中图分类号： TJ55    TQ203   

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