Research Progress of Aluminum Core-shell Materials Coated with Fluorine-containing Polymer Materials

doi:10.12382/bgxb.2022.1022

Abstract

Abstract:

Aluminum (Al) is the most popular metal additive in the field of composite solid propellants due to its high calorific value, high density and low oxygen consumption. In order to improve the performance of composite solid propellant, it is necessary to take measures to modify Al. In recent years, the fluorine-containing polymer coated Al has attracted wide attention due to its excellent comprehensive properties. This paper introduces the different kinds of metal aluminum core-shell materials coated with fluorine-containing polymer materials, the different coating methods, the properties of aluminum core-shell materials and the mechanism of action of fluorine-containing polymers and aluminum. The enhanced ignition and combustion performances of aluminum core-shell materials are due to the surface reaction between the fluorine-containing polymer and the alumina layer, resulting in a violent oxidation process. At the same time, the combustion agglomeration and combustion efficiency of aluminum core-shell material modified propellant are significantly improved. The problems existing in the research of fluorine-containing polymer coated aluminum materials are discussed, and the conclusion, prospect and possible research direction are put forward.

Key words: fluorinated polymer, aluminum core-shell material, coating, composite solid propellant

CLC Number:

TJ55

GUO Xueyong, ZHOU Jinqiang, LI Hongliang, WU Chengcheng, FANG Hua, DENG Peng, ZHU Yanli, LIU Rui. Research Progress of Aluminum Core-shell Materials Coated with Fluorine-containing Polymer Materials[J]. Acta Armamentarii, 2024, 45(5): 1534-1546.

Figures/Tables 10

References 64

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含氟高分子	分子式	抗拉强度/ MPa	热分解温度/℃	含氟量/ %	溶解情况	与Al混合制备方法	参考文献
PTFE	(CF₂-CF₂)_n	238	508~538	76.0	几乎不溶于所有有机溶剂	化学气相沉积、机械球磨、3D打印等	文献[46,48]
PVDF	(CH₂-CF₂)_n	20~100	350	59.4	溶N-甲基吡咯烷酮,二甲基乙酰胺, N,N-二甲基甲酰胺	喷墨打印,电喷涂沉积、静电纺丝和相反转法等	文献[50- 56]
F₂₃₁₁	(CF₂-CFCl)_m-(CF₂-CH₂)_n (m∶n=1∶1)	410	200~400	72.3	溶于低分子酮类和酯类	3D打印	文献[72]
F₂₆₀₂	(CF₂-CH₂)_m-(CFCF₃-CF₂)_n (m∶n=1∶2)	210~230	≥400	73.1	溶于低分子酮类和酯类	电爆法	文献[32]
PFPE	(CF₂-O-CF₂)_n		270~300	79.3	常温为液体	机械混合、溶剂蒸发法	文献[58,60]
PFTD	C₁₄HF₂₇O₂			76.3	溶于乙醚	悬浮溶剂蒸发法、机械混合	文献[62- 63]
PFHD	C₁₆HF₃₁O₂			76.3	溶于乙醚	机械混合	文献[73]

含氟高分子	分子式	抗拉强度/ MPa	热分解温度/℃	含氟量/ %	溶解情况	与Al混合制备方法	参考文献
PTFE	(CF₂-CF₂)_n	238	508~538	76.0	几乎不溶于所有有机溶剂	化学气相沉积、机械球磨、3D打印等	文献[46,48]
PVDF	(CH₂-CF₂)_n	20~100	350	59.4	溶N-甲基吡咯烷酮,二甲基乙酰胺, N,N-二甲基甲酰胺	喷墨打印,电喷涂沉积、静电纺丝和相反转法等	文献[50- 56]
F₂₃₁₁	(CF₂-CFCl)_m-(CF₂-CH₂)_n (m∶n=1∶1)	410	200~400	72.3	溶于低分子酮类和酯类	3D打印	文献[72]
F₂₆₀₂	(CF₂-CH₂)_m-(CFCF₃-CF₂)_n (m∶n=1∶2)	210~230	≥400	73.1	溶于低分子酮类和酯类	电爆法	文献[32]
PFPE	(CF₂-O-CF₂)_n		270~300	79.3	常温为液体	机械混合、溶剂蒸发法	文献[58,60]
PFTD	C₁₄HF₂₇O₂			76.3	溶于乙醚	悬浮溶剂蒸发法、机械混合	文献[62- 63]
PFHD	C₁₆HF₃₁O₂			76.3	溶于乙醚	机械混合	文献[73]