固体火箭技术2023，Vol.46Issue(6)：854-865,12.DOI:10.7673/j.issn.1006-2793.2023.06.008
固体推进剂用硝酸酯增塑剂的热安定机制研究进展
Progress on thermal stability mechanism of nitrate esters plasticizers for solid propellant
曹华文 1唐秋凡 1郑启龙 1屈蓓 1李吉祯1
作者信息
摘要
Abstract
From the application perspective of nitrate ester in solid propellant,the research progress on the thermal decomposi-tions and thermal stability mechanisms of nitrate esters at home and abroad was reviewed.Research on the thermal decomposition mechanism of nitrate esters was focused on the non-isothermal high-temperature thermal decomposition behaviors and kinetics,but the isothermal thermal decomposition mechanism,reaction kinetics and product distribution of nitrate esters at the operating temper-ature was seldom investigated.Studies on the thermal stability mechanism of nitrate esters mainly concentrated on the exploration of the initial stability effect of phenylamine type and phenylurea type stabilizers,the later stability mechanism,the overall reaction ki-netic process and the quantitative ratio relationship between stabilizers and nitrate esters has not been reported in the literature.Up to now,a two-step thermal decomposition mechanism of nitrate has been formed at home and abroad,namely the breaking of nitrate esters bond and the self-catalysis of nitrate esters;the initial stability process of phenylamine type and phenylurea type stabilizers was preliminarily obtained.The initial stability mechanism of phenylamine type stabilizers was that hydrogen on the amino group of stabilizers was combined with nitrogen dioxide to generate HNO2 and N free radicals,and then the N free radicals of stabilizer was combined with NO.The stability mechanism of phenylurea type stabilizers was C-nitration and N-nitration absorption of nitrogen ox-ides.However,the above research results at home and abroad were not enough to support the research on the control technology of nitrate esters stability and the high temperature reliable use control technology of solid propellant and others.Henceforth,further re-search on the isothermal decomposition behaviors as well as the stability mechanism of nitrate esters at the operating temperature should be advocated as critical direction for academic investigation.关键词
固体推进剂/硝酸酯/安定剂/热分解/安定机理Key words
solid propellant/nitrate esters/stabilizers/thermal decomposition/stability mechanism分类
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曹华文,唐秋凡,郑启龙,屈蓓,李吉祯..固体推进剂用硝酸酯增塑剂的热安定机制研究进展[J].固体火箭技术,2023,46(6):854-865,12.
