The respective uses of silicon and silicon dioxide
Silicone because of the unique structure and properties of both inorganic materials and organic materials, has low surface tension, viscosity temperature coefficient, high compressibility, higher gas permeability properties, and has high and low temperature resistance, electrical insulation, resistance to oxidation stability, weather resistance, flame retardant, water repellent, corrosion resistance, non-toxic and tasteless physiological inert excellentproperties, widely used in aerospace, electronic and electrical, construction, transportation, chemical industry, light industry, textile, food, medical and other industries.
1. Silicon dioxide is an important component of glass, quartz glass, water glass, optical fiber, electronic industry, optical instruments, handicrafts and refractory materials, and is an important material for scientific research.2, when the time is perfect crystalline silica crystal; silica gel after dehydration is agate; solidification colloidal silica water; silica grain is less than a few microns, on the formation of chalcedony, chert, secondary quartzite.3, food industry as anti caking agent, defoaming agent, thickening agent, filter aid agent, clarifying agent.
SiO, insoluble in water. Insoluble in acids but soluble in hydrofluoric acid and hot concentrated phosphoric acid, used in combination with molten bases. There are two kinds of crystalline silica and amorphous silica in nature. Silica is widely used, mainly used in making glass, water glass, pottery, ceramic, refractory material, aerogel blanket, ferrosilicon, silicon sand, cement, etc., in ancient times, silica is used to make the glaze porcelain and carcass. Ordinary stones consist mainly of silica and calcium carbonate.
Si, atomic number 14, relative atomic mass 28.0855, amorphous silicon and crystalline silicon two allotropes, which belongs to the periodic table for third cycles, IVA group metal elements. Silicon is also a very common element, but it rarely occurs in nature as a single substance. It is widely found in rocks, gravel, and dust in the form of complex silicates or silica.
