Phosphate film-coated powder and preparation method thereof

Abstract

This invention relates to a method of preparing envelope powder. The shattering, depolymerization and coating processed at same time, and solid phase acid-base reaction participate the method. This envelope powder possess double-decker or three-layer structure, inner core is composed by oxide or hydrate or inorganic oxysalt, crust composed by inorganic oxysalt, envelope by aluminum phosphate or boron phosphate. This low cost powder be able to used as fortifier, power stuff, colorant and so on, applied to plastic, rubber, ceramics, dope, binder and paper, set foundation for popularization of ultramicro and nanometer powder.

Description

technical field

[0001] The present invention relates to a surface-modified inorganic powder and a preparation method thereof, in particular to an inorganic powder coated with aluminum phosphate or boron phosphate coating on the surface and a preparation method thereof, and also to this powder as a filler Agents, reinforcing agents, colorants, rheological agents, adsorption carriers, powder materials used in inks, paints, coatings, rubber, plastics, resins, sealants, adhesives, lubricants, drilling mud, stationery, daily Used in chemicals, paper, textiles, ceramic materials, refractory materials, magnetic materials, electronic materials, electromagnetic wave shielding materials, and artificial biological tissues. Background technique

[0002] The miniaturization of inorganic powders, the particle size is as fine as less than 1000 nanometers, or even less than 100 nanometers, which can obtain important size effects. On the other hand, the finer the particle size, the easier i...