含能材料2025，Vol.33Issue(11)：1281-1287,7.DOI:10.11943/CJEM2025096
聚丙烯酰胺诱导的硝酸羟胺基推进剂凝胶化机制
Gelation Mechanism of Hydroxylammonium Nitrate-based Propellants Induced by Polyacrylamide
仝瑞杰 1孙臻琦 1张恒 2苑世领2
作者信息
- 1. 内蒙动力机械研究所,内蒙古 呼和浩特 010000
- 2. 山东大学化学与化工学院,山东 济南 250100
- 折叠
摘要
Abstract
To explore the gel mechanism of hydroxylamine nitrate-based gel propellant,the molecular dynamics(MD)simula-tions were employed to investigate the microscopic behavior,final crosslinking configuration,and the hydrogen bonding distri-bution that influences the stability of the hydroxylammonium nitrate/polyacrylamide(PAM)/methanol/water propellant gel sys-tem of PAM molecules.Results show that PAM molecules primarily form interaction nodes through intermolecular hydrogen bonding interactions,further promoting the expansion of molecular chains and the construction of a three-dimensional network framework.As the mass fraction of PAM increases from 2.7%to 10.7%,the number of hydrogen bonds formed between PAM molecules increases from 11.98 to 109.Both Van der Waals force interactions and hydrogen bonding jointly drive a self-accelerating crosslinking process of PAM molecules.The radial distribution of hydroxylammonium groups and nitrate ions in hydroxylammonium nitrate shows a bimodal characteristic.The introduction of PAM weakens the intensity of the first peak,as it reduces local interaction and energy density by forming crosslinking"domains",thereby enhancing the stability of the propellant.关键词
硝酸羟胺(HAN)/绿色单组分推进剂/凝胶化/黏度/聚丙烯酰胺(PAM)Key words
hydroxylammonium nitrate(HAN)/green monopropellants/gelation/viscosity/polyacrylamide(PAM)分类
武器工业引用本文复制引用
仝瑞杰,孙臻琦,张恒,苑世领..聚丙烯酰胺诱导的硝酸羟胺基推进剂凝胶化机制[J].含能材料,2025,33(11):1281-1287,7.
