The present invention discloses a preparation method of an insoluble inorganic nanopowder and its thermoplastic material. The preparation method of the insoluble inorganic nanopowder comprises first uniformly mixing an acidic substance and an auxiliary agent to obtain an acidic solvent system, then adding an inorganic raw material and uniformly mixing to obtain a mixture; extruding, shearing and dispersing the mixture in a twin-screw extruder, and drying to obtain a nano inorganic powder. The preparation method of the inorganic thermoplastic material comprises heating and blending the insoluble inorganic nanopowder prepared by the above method with a plasticizer to obtain a uniform blend, then putting the blend into a twin-screw extruder for melt extrusion to obtain an inorganic thermoplastic material. The present invention utilizes the strong dissolution effect of acidic solvent, combined with the high shear and strong extrusion effect of a twin-screw extruder, greatly reduces the processing temperature of inorganic nanopowder, simplifies the preparation process, obtains nanopowder with uniform particle size distribution, and realizes low-energy and high-efficiency preparation of nano-scale inorganic powder.
Country Code: CN
Application Number: CN202410445950.9
