Abstract: With natural mineral kaolinite as raw material, 50% hydration hydrazine as intercalation chemicals, the authors intercalated hydrazine molecules (NH₂-NH₂)between the layers of Kaolinite successfully by direct liquid intercalation,stirring at the same time,and prepared the hydrazine-kaolin intercalation complex material. The product was characterized by the infrared reflectance spectroscopy and the granularity analyse apparatus . The IR spectrum indicate, the new hydrogen bondings was formed in the N-H-OH interaction between the N-H in the hadrazine molecules from intercalation chemicals and the hydroxypyzidone(-OH) in the inner surface of kaolin. The average particle size of the products has increased by 46.84%,and the percent for the particles which radius is less than 5 micron has decreased 10.55%.

Key words: kaolin, intercalation complex, hydrazine