摘要
为研究固体填料粒度级配及工艺助剂对低铝低燃速HTPB推进剂工艺性能的影响,依据固体颗粒堆积最密集排列理论,建立了固体颗粒级配模型,结合固体填料实际粒径,计算得到两种理想刚性球的堆积结果,并在此基础上考察了不同级配配方药浆流动性及触变性。同时,通过筛选工艺助剂种类及优化最适助剂用量,对比了加入不同工艺助剂配方药浆的触变性。结果表明:当采用双二级配模型,计算出的固体颗粒级配比例最优;通过进一步优化固体颗粒级配,结合药浆触变环大小快速判定了推进剂固体级配的合理性,提高了低铝低燃速HTPB推进剂配方工艺性能的可设计性;当工艺助剂选用SU-2,且用量为0.03%时,推进剂工艺性能明显改善,适用期可达596min。
In order to study the effects of solid filler particle size grading and process additives on the process performance of low aluminum low burning rate HTPB propellant,a solid particle grading model based on the theory of the most densely packed solid particles was established. And combined with the actual particle size of solid filler,the packing results of two kinds of ideal rigid balls were calculated. On this basis,the fluidity and thixotropy of slurry with different grading formulas were investigated. At the same time,by screening the types of process additives and optimizing the optimum dosage of additives,the thixotropy of the formulations with different process additives was compared. The results show that when the double secondary gradation model is used,the calculated solid particle gradation ratio is the best. By further optimizing the solid particle gradation and combining with the thixotropic ring size of the slurry,the rationality of the solid grading of the propellant is quickly determined,and the designability of the process performance of the low aluminum and low burning rate propellant is improved. When SU-2 is selected as the process additive and its dosage is 0.03%,the process performance of the propellant is significantly improved,and the pot life can reach 596 min.
作者
张宁
梁蓓
刘晋湘
高卫平
辛燕平
刘长义
ZHANG Ning;LIANG Bei;LIU Jin-xiang;GAO Wei-ping;XIN Yan-ping;LIU Chang-yi(Xi’an North Hui An Chemical Industries Co.Ltd,Xi’an 710302,China;School of Materials,Beijing Institute of Technology,Beijing 100081,China)
出处
《推进技术》
EI
CAS
CSCD
北大核心
2022年第3期352-359,共8页
Journal of Propulsion Technology
基金
国家自然科学基金(51506093)。
关键词
HTPB推进剂
流变性
低燃速
工艺助剂
工艺性能
HTPB propellant
Rheological property
Low burning rate
Process additives
Process performance
