含能材料2017，Vol.25Issue(3)：248-252,5.DOI:10.11943/j.issn.1006-9941.2017.03.012
分层结构微孔球扁药制备条件对其燃烧性能的影响
Effects of Preparation Conditions on Combustion Performance of Microcellular Oblate Spherical Propellants with Layered Structure
张一鸣 1丁亚军 1罗元香 1应三九1
作者信息
- 1. 南京理工大学化工学院,江苏南京210094
- 折叠
摘要
Abstract
In order to improve the combustion performance of the oblate spherical propellants,the microcellular oblate spherical propellants with layered structure were prepared by supercritical carbon dioxide though temperature-rising method under certain saturation condition and foaming time (tf).The effects of desorption time (td) and foaming temperature (T1) on the thickness of unfoamed skin were investigated by analyzing the formation mechanism based on classical nucleation theory and proved by the scanning electron microscope (SEM) images.Results show that different thickness corresponding to different combustion properties.The closed bomb tests indicate that td =2 min,Tf=85 ℃ and tf=20 s with 20 iμm unfoamed skin shows excellent progressive combustion performance,which is undetected in the samples with thicker unfoamd skin or the samples completely foamed.Therefore,the microcellular oblate spherical propellants with appropriate unfoamed skin thickness and progressive combustion performance can be obtained through controlling the desorption time and foaming temperature.关键词
超临界CO2/微孔球扁药/发泡/燃烧性能Key words
supercritical CO2/microfoam oblate spherical propellants/foaming/combustion performance分类
军事科技引用本文复制引用
张一鸣,丁亚军,罗元香,应三九..分层结构微孔球扁药制备条件对其燃烧性能的影响[J].含能材料,2017,25(3):248-252,5.
