含能材料2025，Vol.33Issue(4)：337-346,10.DOI:10.11943/CJEM2025011
PVDF弥散嵌合改性铝粉的制备及性能
Preparation and Properties of of PVDF/Al
张成 1杨文进 2宋江伟 2张军旗2
作者信息
- 1. 东北大学 材料科学与工程学院,沈阳 110819||中国科学院金属研究所 沈阳材料科学国家研究中心,沈阳 110016
- 2. 中国科学院金属研究所 沈阳材料科学国家研究中心,沈阳 110016
- 折叠
摘要
Abstract
To address the low energy release efficiency of aluminum powder as a metallic fuel,aluminum-based composite fuels containing 3%-6%polyvinylidene fluoride(PVDF)were prepared using mechanical alloying.The powders were characterized using scanning electron microscopy(SEM)and X-ray diffraction(XRD)to analyze their microstructures and phase compositions.The active aluminum content was measured by gas volumetric analysis,and the combustion calorific values were determined us-ing oxygen bomb calorimetry.Thermal oxidation properties were evaluated through thermogravimetric-differential scanning calo-rimetry(TG-DSC)and a custom-built rapid heating oxidation setup.SEM and XRD results revealed that the composite aluminum powder modified with 4%PVDF dispersion prevented the formation of a continuous Al₂O₃ shell during heating.TG-DSC analysis showed a 76.7%oxidation weight gain at 1300℃for the composite powder,representing a 35.8%improvement over pure alu-minum powder(40.9%).Rapid oxidation tests at 1100℃demonstrated a 64.6%weight gain after 120 s for the composite pow-der,which is 41.2%higher than the 23.4%weight gain of pure aluminum.These findings highlight the critical role of PVDF dis-persion modification in enhancing the oxidation activity and efficiency of aluminum powder.关键词
氧化性能/聚偏氟乙烯(PVDF)/活化铝粉/氧化增重率Key words
oxidation properties/polyvinylidene fluoride(PVDF)/activation of aluminum powder/oxidative weight gain分类
武器工业引用本文复制引用
张成,杨文进,宋江伟,张军旗..PVDF弥散嵌合改性铝粉的制备及性能[J].含能材料,2025,33(4):337-346,10.
