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Updated: Jan 9, 2026

Fused Filament Fabrication FFF of Metal-Ceramic Components
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了解MOF颗粒化中的孔隙性损失:Zn-MOF-74内在与外在的机械稳定性

Ashley L Sutton1, Muhammad Munir Sadiq1, Michael T Scalzo2

  • 1Manufacturing, CSIRO, Private Bag 33, Clayton South Melbourne, Victoria 3169 Australia.

ACS omega
|December 1, 2025
PubMed
概括

工业用途的金属有机框架 (MOF) 颗粒化会由于机械应力而导致性能损失. 了解这种降解是改善MOF可加工性和保持其多孔性的关键.

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The porosity of concrete is a measure of the void spaces within its structure. These spaces impact its strength and durability significantly. When water and cement interact, a chemical reaction called hydration creates a semi-solid paste. This paste includes combined water, making up approximately 23% of the cement's dry mass, and gel water, which fills minuscule voids known as gel pores, accounting for about 28% of the cement gel volume.
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Aggregates contain pores of varying sizes; while some are completely enclosed within the particles, others open onto the surface, allowing water to penetrate. The porosity of aggregates is a major factor contributing to the overall porosity of concrete, given that aggregates constitute about three-quarters of concrete's volume.
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Transition Zone

The transition zone in concrete is a critical area where aggregate meets cement paste, marked by a distinct porosity and weakness compared to the surrounding material. The adhesion around the aggregates is primarily due to Van Der Waals forces. The voids within this zone influence its robustness; initially, it is less durable than the surrounding bulk mortar due to larger voids. Initially, when concrete is compacted, a higher water-cement ratio near the aggregates leads to the formation of...
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