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- W3136178048 endingPage "127073" @default.
- W3136178048 startingPage "127073" @default.
- W3136178048 abstract "Due to the dense oxide film on the surface of aluminum powder, the combustion efficiency of aluminum powder is reduced and the ignition temperature is increased. The addition of polytetrafluoroethylene (PTFE) and the use of ball milling can effectively improve the ignition and combustion properties of aluminum powder. However, the Al-PTFE composite prepared by ball milling usually limits the combustion efficiency of aluminum due to its low PTFE content. In addition, the presence of the F element on the surface of the Al-PTFE particles makes Al-PTFE and HTPB adhesives produce interface effects, making it difficult for Al-PTFE composites to be used in composite propellants. Herein, through simple tannic acid (TA) self-aggregation and the self-assembly reaction of TA with iron ions, the [email protected] and [email protected] composites with hierarchical core-shell structure are prepared. Scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and thermogravimetry and differential scanning calorimetry (TG-DSC) are uesd to characterize these composites. The experimental results show that the establishment of TA and TA-Fe interface layer can effectively decrease the ignition temperature of Al-PTFE composite in the oxygen. In addition, [email protected] and [email protected] can effectively inhibit aluminum agglomeration compared with Al-PTFE during the combustion process." @default.
- W3136178048 created "2021-03-29" @default.
- W3136178048 creator A5001288006 @default.
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- W3136178048 date "2021-04-01" @default.
- W3136178048 modified "2023-10-16" @default.
- W3136178048 title "Preparation of hierarchical core-shell Al-PTFE@TA and Al-PTFE@TA-Fe architecture for improving the combustion and ignition properties of aluminum" @default.
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- W3136178048 doi "https://doi.org/10.1016/j.surfcoat.2021.127073" @default.
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