Why Can Silica Gel Prevent Moisture?
Silica gel is a porous form of silicon dioxide with countless tiny pores inside. These pores work like a sponge, physically adsorbing water molecules from the air. Since the process is physical rather than chemical, silica gel is non-toxic, stable, and can be reused after heating and drying. That’s why it is widely used for moisture-proof packaging in electronics, medicines, food, and daily products.
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Colloidal Silica under a High-Power Electron Microscope
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