火炸药学报2023，Vol.46Issue(4)：345-351,7.DOI:10.14077/j.issn.1007-7812.202301005
CL-20粒度对3D打印光固化发射药的热分解和燃烧性能的影响
The Influence of CL-20 Particle Size on the Thermal Decomposition and Combustion Performances of 3D Printed Photocurable Propellants
李曼曼 1武若蘅 2高宇晨 1杨伟涛 1胡睿 1王琼林1
作者信息
- 1. 西安近代化学研究所,陕西 西安710065
- 2. 西北工业大学 电子信息学院,陕西 西安710119
- 折叠
摘要
Abstract
In order to clarify the influence of CL-20 particle size on the thermal decomposition and combustion behaviors of 3D printed gun propellants,the photocurable gun propellants containing 24,56 and 152 μm CL-20 particles were fabricated by ex-trusion 3D printing,and the thermal behavior of 3D-printed propellants was studied by the non-isothermal DSC(differential scanning calorimetry)method.The decomposition activation energy was obtained by the modified Kissinger-Akahira-Sunose(KAS)method.It was found that all the CL-20-based propellants presented a two-step decomposition process.The first de-composition step is considered an accelerated process resulting from reducing the crystal quality of CL-20 affected by the photo-curable binder.The critical temperatures of thermal explosion(Tpe)of the CL-20/PUA(polyurethane acrylate)composites was decreased about 27℃compared with pure CL-20.Regarding the influence of particle size,the experimental results indica-ted that the fine CL-20 was affected more by the binder than the other particle sizes due to the greater surface area.Propellant samples containing finer CL-20 particles presented lower activation energy and critical temperature.The combustion results also indicated that the propellant containing fine CL-20 presented higher burning rate and lower pressure exponent.It is recommen-ded to use fine CL-20 to construct the photocurable propellants for 3D printing.关键词
物理化学/CL-20/HNIW/光固化火药/3D打印/粒度/热分解Key words
physical chemistry/CL-20/HNIW/photocurable propellant/3D printing/particle size/thermal decomposition分类
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李曼曼,武若蘅,高宇晨,杨伟涛,胡睿,王琼林..CL-20粒度对3D打印光固化发射药的热分解和燃烧性能的影响[J].火炸药学报,2023,46(4):345-351,7.
