Preparation method of rhombic antimony (III) trioxide

Abstract

The invention discloses a preparation method of rhombic antimony (III) trioxide. The preparation method comprises the following steps: step one, preparing antimony trichloride, a sodium hydroxide solution, and triethanolamine, dissolving antimony trichloride into waterless ethanol, and then saving the solution for later use; step two, adding the sodium hydroxide solution and triethanolamine into the obtained ethanol solution, and then dropwise adding a waterless ethanol solution of antimony trichloride under stirring; step three, after reaction, allowing the system to stand still to precipitate, then pouring the supernate so as to obtain an antimony hydroxide-triethanolamine precursor, and then dropwise adding the precursor into deionized water under stirring; step four, adjusting the temperature to 60 DEG C, carrying out aging, then performing centrifugal separation, and finally drying so as to obtain the nano crystal powder of rhombic antimony (III) trioxide. The provided preparation method has the advantages that the raw materials are cheap, the impurities can be easily removed, the obtained product particles are spherical, the particles are evenly distributed, the crystallization is complete, and thus the prepared rhombic antimony (III) trioxide can be better dispersed in paints and plastic and attached on fibers.

Description

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AI Technical Summary

Benefits of technology

This patented process provides an effective way for producing pure metaphroxytri oxides with improved properties such as reduced cost compared to existing methods or easier removal of unwanted substances from them. These products have good quality, even when they come off during production processes due to their smooth surface appearance. They also provide consistently-distributed small size particles which make up most part of these compositions. Additionally, this new form can be used effectively on both fiber surfaces without affecting its performance negatively.

Problems solved by technology

This patented technical problem addressed by this patents relates to finding ways for making better fire resisting agents that use an organosilicon compound called stannous oxide (Sb2O3) instead or combine them together without affecting their function.