In this study, silica compacts were fabricated through a powder processing route at different compaction pressure, using Aloe-Vera (AV) mucilage as a binder. The silica compacts were prepared at 90, 100, and 110 MPa compaction pressure using 0%–16 wt% of AV binder. The optimum amount of AV binder was 14 wt% for both 90 and 100 MPa and 12 wt% for 110 MPa. The maximum achieved green density and green strength of silica compacts at the optimum binder amount were 62.3% and 4 MPa, respectively at 110 MPa compaction pressure. The green silica compacts prepared at 110 MPa compaction pressure exhibited a minimum porosity of 21% and maximum flexural strength of 15 MPa after sintering at 1400°C. The green silica compacts with the optimum amount of binder were strong enough for machining. The Fourier transform infrared spectroscopy analysis revealed the functional groups present in AV mucilage. The binder burnout characteristic of AV mucilage in the silica compact was determined by thermogravimetric analysis and differential thermal analysis. Additionally, AV gel acted as a binder and solvent simultaneously for ceramic compaction.

中文翻译：

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以芦荟胶为粘合剂制备的二氧化硅陶瓷复合片的制备和表征

在这项研究中，使用芦荟（AV）粘液作为粘合剂，通过粉末加工路线在不同的压实压力下制造二氧化硅压块。使用 0%–16 wt% 的 AV 粘合剂在 90、100 和 110 MPa 的压实压力下制备二氧化硅压块。90 和 100 MPa 时 AV 粘合剂的最佳用量为 14 wt%，110 MPa 时为 12 wt%。在 110 MPa 的压制压力下，最佳粘结剂用量下二氧化硅压坯的最大生密度和生坯强度分别为 62.3% 和 4 MPa。在 110 MPa 压实压力下制备的生二氧化硅压块在 1400°C 烧结后表现出 21% 的最小孔隙率和 15 MPa 的最大弯曲强度。具有最佳粘合剂量的生二氧化硅压块足够坚固，可以进行机加工。傅里叶变换红外光谱分析揭示了 AV 粘液中存在的官能团。通过热重分析和差热分析确定二氧化硅压块中 AV 粘液的粘合剂烧尽特性。此外，AV 凝胶同时用作陶瓷压实的粘合剂和溶剂。