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Consolidation of Lunar Regolith Simulant by Activated Thermite Reactions

机译:活化铝热反应固结月球长石模拟物

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摘要

It is widely recognized that future exploration missions to the Moon will include construction of permanent lunar bases to support long-term lunar missions. The lunar in situ resource utilization concept to produce superior construction materials is a vital part of exploration missions. This paper presents a novel approach for consolidation of lunar regolith with activated thermite reactions using aluminum or magnesium-polytetrafluoroethylene (PTFE) systems to produce superior ceramic materials for potential construction purposes on the Moon. Thermodynamic analysis of reactive systems was used to predict the adiabatic temperature and equilibrium product concentrations. It was demonstrated that PTFE up to 2% by weight is sufficient to achieve regolith consolidation and reduce aluminum (magnesium) content to 15% by weight with utilization of more than 80% by weight regolith. Testing of fabricated materials shows that consolidated ceramics can have up to 60% porosity, which significantly improves thermal insulation up to 0.1 W/mK. The hardness value of the material-approximately 850 in the Knoop scale-confirms that consolidated regolith can accomplish the construction requirements on the Moon. (C) 2014 American Society of Civil Engineers.
机译:众所周知,未来的登月任务将包括建造永久性的月球基地,以支持长期的月球任务。生产优质建筑材料的月球原位资源利用概念是勘探任务的重要组成部分。本文提出了一种利用铝或镁-聚四氟乙烯(PTFE)系统利用活化的铝热剂反应固结月牙石的新方法,以生产用于月球上潜在建筑用途的优质陶瓷材料。反应系统的热力学分析用于预测绝热温度和平衡产物浓度。已证明,高达2%(重量)的PTFE足以实现粉煤灰固结,并利用超过80%(重量)的粉煤灰,将铝(镁)含量降低到15%(重量)。对预制材料的测试表明,固结陶瓷的孔隙率可高达60%,可显着提高隔热性能,最高可达0.1 W / mK。这种材料的硬度值(努氏标度约为850)表明,固结的粉煤灰可以满足月球上的构造要求。 (C)2014年美国土木工程师学会。

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  • 来源
    《Journal of aerospace engineering》 |2015年第4期|04014105.1-04014105.9|共9页
  • 作者单位

    Univ Texas Brownsville, Dept Phys & Astron, Brownsville, TX 78520 USA;

    Univ Texas Brownsville, Dept Phys & Astron, Brownsville, TX 78520 USA;

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  • 正文语种 eng
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