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Desiccant - Wikipedia
Silica gel can adsorb about 40 percent of its weight in moisture and can take the relative humidity in a closed container down to about 40 percent. Once saturated, you can propel the moisture off and reuse silica gel by heating it above 300 degrees F (150 C). Silica gel is also used to dry the air in industrial … Meer weergeven Silica gel is an amorphous and porous form of silicon dioxide (silica), consisting of an irregular tridimensional framework of alternating silicon and oxygen atoms with nanometer-scale voids and pores. The voids may … Meer weergeven • Type A – clear pellets, approximate pore diameter: 2.5 nm, drying and moistureproof properties, can be used as catalyst carriers, adsorbents, separators and variable … Meer weergeven Once saturated with water, the gel may be regenerated by heating it to 120 °C (248 °F) for 1–2 hours. Some types of silica gel will "pop" … Meer weergeven Desiccant In many items, moisture encourages the growth of mold and spoilage. Condensation … Meer weergeven Silica gel was in existence as early as the 1640s as a scientific curiosity. It was used in World War I for the adsorption of vapors and gases in gas mask canisters. The synthetic … Meer weergeven Silica gel's high specific surface area (around 750–800 m /g (230,000–240,000 sq ft/oz)) allows it to adsorb water readily, making it useful as a desiccant (drying agent). … Meer weergeven An aqueous solution of sodium silicate is acidified to produce a gelatinous precipitate that is washed, then dehydrated … Meer weergeven WebSilica also is used in grinding and polishing glass and stone; in foundry molds; in the manufacture of glass, ceramics, silicon carbide, ferrosilicon, and silicones; as a refractory … slow drying epoxy putty
Aerogel.org » How is Aerogel Made?
WebIn fact, 1980’s-style hard contact lenses used to be manufactured by drying silica gels into lens-shaped silica xerogels. Aerogel is the solid framework of a gel isolated from its liquid component, prepared in such a way as to preserve the framework’s pore structure (or at least most of it). In other words, aerogel is what would be left ... WebOnce mixed add a little silica gel to the mixture, this will react and create more heat and fumes, stir to mix. Keep adding a little of the silica gel at a time to the mixture until it is al combined. It is ok if the silica gel does not dissolve. Heat the mixture over your heat source until it boils and keep stirring. WebSilica Gel Desiccant Packets are invaluable for keeping things dry. Everything from Rifles and Ammo to Dried Beans and Leather Goods. Absorbing up to 40% of ... slow drying glue