Burning Characteristics in a Wide Range of Pressure and Thermal Decomposition of AP/PBT Solid Propellants

IF 0.9 4区工程技术 Q4 ENERGY & FUELS Combustion, Explosion, and Shock Waves Pub Date : 2024-01-22 DOI:10.1134/s0010508223060126

H. Y. Yu, L. Huang, L. M. Wang, X. Zhou

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Abstract

An attempt to understand the relation between the burning characteristics and thermal decomposition in a wide range of pressure is made in the present investigation based on solid propellants with ammonium perchlorate as an oxidizer and 3,3-diazomethylepoxybutane and tetrahydrofuran as a fuel binder. The burning rate measurement is carried out in a wide range of pressure: 1.0, 3.0, 7.0, 13.8, 15.0, and 20.0 MPa. The inflection point of the pressure exponent for ammonium perchlorate with and without oxalate and the flame extinguishing point both appear at 13.8 MPa. Various mechanisms of burning rate reduction by the quaternary ammonium salt and oxalate are analyzed by theoretical analysis, thermogravimetric analysis, and differential scanning calorimetry analysis. The burning rate and decomposition of the oxidizer and fuel binder with combustion modifiers and their overall impact on propellant combustion are studied. Due to modifiers, a transition between kinetically controlled combustion and diffusion controlled combustion is found to occur.

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AP/PBT 固体推进剂在宽压力范围内的燃烧特性和热分解情况

摘要本研究以高氯酸铵作为氧化剂、3,3-二氮甲基环氧丁烷和四氢呋喃作为燃料粘合剂的固体推进剂为基础，试图了解在宽压力范围内燃烧特性与热分解之间的关系。燃烧速率的测量在很宽的压力范围内进行：1.0、3.0、7.0、13.8、15.0 和 20.0 兆帕。含草酸盐和不含草酸盐的高氯酸铵的压力指数拐点和火焰熄灭点均出现在 13.8 兆帕。通过理论分析、热重分析和差示扫描量热分析，分析了季铵盐和草酸盐降低燃烧速率的各种机理。研究了氧化剂和燃料粘合剂与燃烧改性剂的燃烧速率和分解情况，以及它们对推进剂燃烧的总体影响。研究发现，由于使用了改性剂，出现了动力学控制燃烧和扩散控制燃烧之间的过渡。

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来源期刊

Combustion, Explosion, and Shock Waves 工程技术-材料科学：综合

CiteScore

1.60

自引率

16.70%

发文量

审稿时长

5.7 months

期刊介绍： Combustion, Explosion, and Shock Waves a peer reviewed journal published in collaboration with the Siberian Branch of the Russian Academy of Sciences. The journal presents top-level studies in the physics and chemistry of combustion and detonation processes, structural and chemical transformation of matter in shock and detonation waves, and related phenomena. Each issue contains valuable information on initiation of detonation in condensed and gaseous phases, environmental consequences of combustion and explosion, engine and power unit combustion, production of new materials by shock and detonation waves, explosion welding, explosive compaction of powders, dynamic responses of materials and constructions, and hypervelocity impact.