PVA (Poly Vinyl Alcohol) modified antimony trioxide and preparation method thereof

The invention discloses PVA (Poly Vinyl Alcohol) modified antimony trioxide and a preparation method of the PVA modified antimony trioxide. The PVA modified antimony trioxide is characterized in that micron-grade antimony trioxide powder is taken as a raw material, distilled water is added in the micron-grade antimony trioxide powder to prepare size, ultrasonic processing or shear emulsification dispersion is carried out on the size, and the size reacts with a PVA solution under a certain condition, so that the PVA modified antimony trioxide is prepared. Compared with the prior art, the PVA modified antimony trioxide disclosed by the invention has the remarkable advantages that (1) a PVA water solution is adopted for modification, and the modification is wet modification; (2) preprocessing is carried out on water-based size of antimony trioxide, and a preprocessing method is performed by an ultrasonic generator or a shear emulsification testing machine; (3) the modified antimony trioxide prepared by the invention exists in a water-based dispersion liquid state, so that the modified antimony trioxide can be easily added during use; (4) the application direction and the application method are different from those in the prior art, the modified antimony trioxide prepared by the invention exists in the water-based dispersion liquid state, and the modified antimony trioxide can be used in the field of preparing water-based latex/emulsion polymer composites and can be particularly used in the field of preparing water-based latex/emulsion polymer composite flame-retardant products.