Sodium Tungstate Fire Proof Material
Sodium tungstate has fire resistant property, and can be used as fire proof material fabric additive. Sodium tungstate is the colorless crystals or white crystalline side ramps, the flaky crystal or crystalline powder with shiny. Sodium tungstate can dissolve in water, and the solution turns out to be slightly alkaline, insoluble in ethanol, slightly soluble in ammonia, weathering in the air, and loss crystal water to become anhydrous when heated to 100 ℃.
Research indicates that sodium tungstate can use as fabric additive and weighting agent in spinning, a mixture of sodium tungstate, ammonium sulfate and ammonium phosphate and other components used in fiber waterproof and fire proof material. Such fibers can be made fireproof rayon and rayon, and also applied for leather tanning. An invention has pointed out that sodium tungstate as one of raw materials of fireproof slurry to prepare waterproof and fireproof cloth, to realize fire proof material function of sodium tungstate.
Today, some of known materials used as the fire proof material for wood, fabric and other flammable compounds or mixtures are: sodium tungstate, ammonium phosphate, ammonium sulfate, alum, borax, boric acid, calcium chloride, magnesium chloride, and sodium silicate ect.. While sodium tungstate is considered as the best fire proof material; in addition, there are reports indicated that coatings contain with sodium tungstate and asbestos has excellent fire resistant property, and this fire proof material can brush in wooden buildings to make them has fire safety features at a certain temperature.
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