YSZ MANUFACTURING METHOD OF YTTRIA STABILIZED ZIRCONIAYSZ NANO SOL HAVING EXCELLENT DISPERSIBILITY

摘要

The present invention comprises the steps of: (a) mixing ZrOCl ₂ ·8H ₂ O sol and Y(NO ₃ ) ₃ ·6H ₂ O sol and adjusting the pH by adding a basic substance; (B) preparing a yttria stabilized zirconia (YSZ) nanoparticles by hydrothermal reaction of the sol obtained in step (a); And (c) the step of performing a treatment for improving the dispersibility of the nano-sol dispersed in the yttria-stabilized zirconia nanoparticles; as a method for producing a yttria-stabilized zirconia nanosol having excellent dispersibility, the present invention According to the present invention, yttria stabilized zirconia (YSZ) sol having excellent dispersibility is prepared by adding various silane coupling agents, acids/bases, polymers and surfactants to nano-sized yttria stabilized zirconia (YSZ) synthesized through hydrothermal reaction. By doing so, by solving the agglomeration problem that has been pointed out as a problem in the application of nano-sized yttria-stabilized zirconia (YSZ), it is possible to exhibit more excellent physical properties when applied as a heat shield coating material.