Zinc Borate
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Overview
Borates-based flame retardants are well-known to be used in coating or polymer, especially zinc borate. Zinc borate has flexibility and outstanding intrinsic properties, particularly its thermal and chemical stability, therefore often used as a filler in paint or polymer-related material to enhance the resistivity toward ignition and slow the spread of fire.
Application
Manufacturing Process
Zinc borate is obtained through the reaction of boric acid with zinc oxide. For industrial-scale manufacturing, the mixture of boric acid and zinc oxide is stirred under specific conditions until the crystal of zinc borate is obtained at a certain time.
Boric acid as a raw material is prepared and dissolved in distilled water to produce a boric acid solution.
Zinc oxide seed is added into the boric acid solution from the dissolution process and vigorously stirred at a certain time until the precipitate is formed.
The precipitated formed from the stirring process is filtered, rinsed with distilled water and dried at a moderate temperature for a certain time.
