Enhancing the Combustion Performance of Metastable Al@AP/PVDF Nanocomposites by Doping with Graphene Oxide

• 作者: De-Yun Tang Jie-Yao Lyu Peijin Liu Qi-Long Yan Shuwen Chen Wei He Xue-Xue Zhang
• 来源期刊: 工程（英文）
• 年，卷（期）: 2020,（9）
• 所属期刊栏目: Energetic Materials and Interdisciplinary Science—Article
• 页码范围: 1019-1027
• 页数: 9页
• 语种: 英文

摘要

A new group of energetic metastable intermixed composites(MICs)was designed and fabricated by means of the spray granulation technique.These MICs are composed of aluminum(Al)as the fuel,ammo-nium perchlorate(AP)and polyvinylidene fluoride(PVDF)as the co-oxidizer.The AP/PVDF ratio was opti-mized by taking the maximum energy release as the criteria.A minor content of graphene oxide(GO)was also doped in the MICs to act as both lubricant and catalyst.It was shown that Al@AP/PVDF with 0.2％ GO has the greatest density(2.57 g·cm-3)and highest heat of reaction(5999.5 J?g-1).These values are much higher than those of Al@AP/PVDF(2.00 g·cm-3 and 5569.8 J·g-1).The inclusion of GO increases the solid-state reaction rate of Al@AP/PVDF and improves the thermal stability.The flame propagation rate was increased up to 4.76 m·s-1 by doping with 0.2％ GO,and was about 10.7％ higher than that of Al@AP/PVDF.Al@AP/PVDF-GO has a better interfacial contact and particle distribution,which results in an improved heat-transfer rate,freedom from the agglomeration of nano-Al particles,and an improved com-bustion reaction rate.This work demonstrates a new strategy to improve the energy release rate and combustion efficiency of Al-based MICs.