摘要
为了探索2,4-二羟基苯甲酸铋对双基推进剂燃烧的催化作用,采用单幅放大彩色摄影法、П型微热电偶技术、扫描电镜和电子能谱研究了含2,4-二羟基苯甲酸铋双基推进剂的燃烧规律。结果表明,2,4-二羟基苯甲酸铋是双基系推进剂良好燃烧催化剂,它能显著提高了双基推进剂的燃速,并降低压强指数。它与铜盐和少量炭黑(CB)复合后,催化效果更优;2,4-二羟基苯甲酸铋加入后,推进剂的火焰结构保持了典型平台双基推进剂的结构特征,但改变了双基推进剂燃烧波温度分布,炭黑和铜盐的加入对2,4-二羟基苯甲酸铋的催化作用有很大影响;催化剂分解的活性组分富集在燃烧表面,不同催化剂使推进剂熄火表面形成不同的结构。
In order to investigate the effect of 2,4-Dihydroxylbenzoate（/3-Bi）on the combustion of double-base propellant, the combustion law of the propellants containing/3-Bi was studied by means of the single frame amplification photography , П miniature thermocouple, the scanning electron microscopy （SEM） and the LINK ISIS energy spectrum. The results show that： β-Bi is a good burning catalyst of double-base propellant and possesses an excellent ability to reduce pressure exponent. Especially, when β-Bi together with a little carbon black （CB） or copper salt is used, the catalytic effect is better; the flame structures of the double-base propellants containingβ-Bi are similar to the typical plateau double-base propellant, but the combustion temperature distribution has been changed because of adding theβ-Bi; and the active components of catalysts deposit on the burning surface of propellants and the quenched surfaces of propellants with various catalysts possess different structure.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2006年第4期376-380,共5页
Journal of Propulsion Technology
基金
国家自然科学基金资助项目(20573098)
国防科技重点实验室基金资助项目(51455030205ZS3505)
关键词
固体推进剂
燃烧催化剂
双基推进剂
燃烧性能
Solid propellant
Combustion catalyst
Double-base propellant
Combustion performance
作者简介
宋秀铎（1978-），男，博士生，研究领域为固体推进剂。E-mail：npecc@21cn．com
