推进剂
燃烧
复合数
催化作用
材料科学
化学工程
集聚经济
复合材料
纳米技术
化学
物理化学
有机化学
工程类
作者
Jie-Yao Lyu,Sen Yang,Shanshan Wu,Gen Tang,Wenming Yang,Qi‐Long Yan
标识
DOI:10.1016/j.combustflame.2022.112029
摘要
Burning rate modulation is a critical but challenging technology for solid propellants’ design. Great efforts have been made to synthesize and utilize catalysts to modify the pressure exponent (n), but poor catalytic efficiency and lower energy level of conventional catalysts limit their further applications. In this research, interfacial control of [email protected] together with precise catalysis of CuO is represented for the purpose of pressure exponent reduction and combustion performance improvement. The core-shell structured [email protected] and [email protected]/CuO composites were prepared and applied into HTPB/Al/AP composite propellants. These prepared propellants have the same formula but different micro-structures of ingredients, leading to varied combustion performance, in terms of the burning rates, combustion wave structures, flame spectra, agglomeration processes of Al particles and condensed combustion products. The investigation results show that by using interfacial control of [email protected] and precise catalysis of CuO, the n of involved propellants over 1–4 MPa can be greatly decreased from 0.42 to 0.21 and the agglomeration of Al could be effectively inhibited. In addition, propellants based on [email protected] and [email protected]/CuO interfacial controls of this research are summarized and compared together with those based on [email protected] published recently, to present overall characteristics of interfacial control techniques, which could lead to the development of new smart controllable propellants.
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