火炸药学报2023，Vol.46Issue(12)：1079-1085,7.DOI:10.14077/j.issn.1007-7812.202303005
Al/PTFE亚稳态分子间复合物的制备及其在高温水蒸汽中的反应性能研究
Preparation of Al/PTFE Metastable Intermolecular Composites and Their Reaction Properties in High-temperature Water Vapor
摘要
Abstract
In order to improve the reactivity of aluminum and high-temperature water vapor,aluminum-based polytetrafluoro-ethylene metastable intermolecular composites(Al/PTFE)with different ball milling time were prepared by mechanical ball mill-ing.The micromorphology,crystal form and oxidation properties of the Al/PTFE were studied by scanning electron microsco-py,laser particle size analyzer,X-ray diffraction,and synchronous thermal analyzer.The ignition performance of Al/PTFE in high-temperature water vapor was studied by a water vapor reactor.The micromorphology and composition of Al/PTFE com-bustion products were studied by scanning electron microscopy,laser particle size analyzer and X-ray diffraction analyzer.The results show that the morphology of Al/PTFE composites changes from flaky to massive with the increase of ball milling time,and the particle size decreases with the increase of ball milling time.The Al/PTFE composites prepared by 3 h ball milling show the best reactivity when reacted with high-temperature water vapor,and the D50 of the reaction product is 17.2 urn.The ig-nition delay time of Al/PTFE composites prepared by 3 h ball milling under high-temperature steam at 600℃ and 700℃ is 29 s and 15s,respectively.The ignition temperature of the composites prepared in 3h are lower than those in both 1 h and 5h.关键词
物理化学/Al/PTFE复合物/铝基水反应金属燃料/球磨/高温水蒸汽/亚稳态分子间复合物Key words
physical chemistry/Al/PTFE composite/Al-based water reactive metal fuel/ball mill/high temperature water va-por/metastable intermolecular composites分类
军事科技引用本文复制引用
肖飞,陈冲..Al/PTFE亚稳态分子间复合物的制备及其在高温水蒸汽中的反应性能研究[J].火炸药学报,2023,46(12):1079-1085,7.基金项目
中国博士后科学基金(No.2023M732495) （No.2023M732495）
山西省基础研究计划青年科学研究项目(No.202103021223180) （No.202103021223180）
