固体火箭技术2025，Vol.48Issue(4)：563-569,7.DOI:10.7673/j.issn.1006-2793.2025.04.007
Al-2Li在丁羟推进剂中的应用研究
Research on the application of Al-2Li in HTPB propellant
摘要
Abstract
To further investigate the impact of aluminum-lithium(Al-Li)alloy powder on the performance of hydroxyl-terminated polybutadiene(HTPB)four-component propellant and reduce the sensitivity of Al-Li alloy-containing HTPB propellant,the effects of varying contents of Al-2Li alloy powder on the theoretical specific impulse,mechanical properties,combustion performance,and re-sidual active aluminum content were studied.The surface of Al-2Li was coated with organic ester compound coating agent.The mor-phology and properties of coated Al-2Li were analyzed by scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),energy dispersive spectroscopy(EDS)and gas chromatography-mass spectrometry(GC-MS).The effect of coated Al-2Li on the sensitivity of propellant was studied.The results indicate that when Al-2Li replaces all the aluminum powders in the formulation,the theoretical specific impulse of HTPB propellant increases by up to 15.97 N·s/kg.The mechanical properties of the HTPB pro-pellant at room,high,and low temperatures remain comparable.The 5h falling-ball viscosity slightly increases from 1 013 Pa·s to 1 216 Pa·s,while the pressure exponent within 3～11 MPa range decreases from 0.39 to 0.34.The active aluminum content in the combustion residue significantly decreases.However,the friction sensitivity of the propellant increases.By coating Al-2Li to reduce exposed lithium on its surface,the sensitivity of the propellant is effectively reduced,with the impact sensitivity dropping from 32%to 0%.关键词
Al-2Li/丁羟推进剂/包覆/力学性能/感度Key words
Al-2Li/HTPB propellant/coating/mechanical property/sensitivity分类
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冯雪,马霞,侯刘娜,赵峻标,王焜,王豪..Al-2Li在丁羟推进剂中的应用研究[J].固体火箭技术,2025,48(4):563-569,7.基金项目
国家级项目. （）
