【摘要】 模拟月壤（lunar regolith simulant, LRS）地聚物通过碱激发作用形成，其具有原位资源利用率高、耐高低温、防辐射及高耐久性等优势性能，模拟月壤地聚物的研究有利于实现基于原位资源的月球建造。鉴于此，研究了球磨时间和养护温度对LRS地聚物早期力学性能及微观结构的影响，通过扫描电子显微镜-能谱分析（scanning electron microscopy-energy dispersive spectroscopy, SEM-EDS）、X射线衍射（X-ray diffraction, XRD）、傅里叶变换红外光谱（Fourier-transform infrared spectroscopy, FT-IR）以及²⁹Si魔角旋转核磁共振(²⁹Si magic angle spinning nuclear magnetic resonance,²⁹Si MAS-NMR)微观表征分析了LRS地聚物的微观形貌、物相组成、红外吸收性质、非结晶结构及固化机理。结果表明，养护龄期为48 h,球磨时间为80 min时，LRS地聚物抗压和抗折强度最大，分别为28.39 MPa和1.81 MPa;养护温度达到80℃时，LRS地聚物的抗压和抗折强度分别为38.86 MPa和3.16 MPa,相比40℃养护条件下分别提高了1 750.47%和444.83%。由微观分析可知，球磨时间和养护温度的增加促进了LRS地聚物中SiO₂和Al₂O₃的溶解、迁移和聚合过程；同时，提高了LRS地聚物的反应效率，使得生成的水化产物凝胶增加，并迅速填充在LRS颗粒间的孔隙中，形成更加致密的地聚物结构，从而提高了LRS地聚物的力学性能。更多还原

【Abstract】 Lunar regolith simulant（LRS） geopolymer is formed through alkali activation and exhibits advantages such as high in-situ resource utilization, excellent resistance to extreme temperatures, effective radiation shielding, and high durability. Research on LRS geopolymer contributes to the development of in-situ resource-based lunar construction. The effects of ball-milling time and curing temperature on the early mechanical properties and microstructure of LRS geopolymer were investigated. Scanning electron microscopy-energy dispersive spectroscopy（SEM-EDS）, X-ray diffraction（XRD）, Fourier transform infrared spectroscopy（FT-IR）, and ²⁹Si magic angle spinning nuclear magnetic resonance(²⁹Si MAS-NMR) were employed to analyze the micro-morphology, phase composition, infrared absorption characteristics, amorphous structure, and solidification mechanism of the geopolymer. The results show that with a curing age of 48 h and a ball-milling time of 80 min, the compressive and flexural strengths of LRS geopolymer reach maximum values of 28.39 MPa and 1.81 MPa, respectively. At a curing temperature of 80 ℃, the compressive and flexural strengths are 38.86 MPa and 3.16 MPa, representing increases of 1 750.47% and 444.83%, respectively, compared to those cured at 40 ℃. Microstructural analysis indicates that increased ball-milling time and curing temperature promote the dissolution, migration, and polymerization of SiO₂ and Al₂O₃ in the geopolymer. In addition, the reaction efficiency is enhanced, leading to increased formation of hydrated gel products that rapidly fill the pores between LRS particles, resulting in a denser geopolymer structure and improved mechanical strength.更多还原