The invention relates to a hollow structure
potassium magnesium titanate whisker material and a method for preparing the same. The technical scheme is that the method comprises evenly mixing a
titanium-containing
raw material, a
magnesium-containing
raw material and a binding agent, performing forming, performing heat treatment and then
grinding the mixture to obtain a material A with the particle size of 0.088-1 mm and a material B with the particle size smaller than 0.088 mm; evenly mixing a
potassium-containing
raw material, a
titanium-containing raw material and a binding agent, performing forming, performing heat treatment and then
grinding the mixture to obtain a material C with the particle size smaller than 0.088 mm; evenly mixing the material A, the material B, the material C and a
potassium-containing raw material, performing heat treatment and then
grinding the mixture to obtain a ground material; finally adding the material C, the potassium-containing raw material and water to the ground material, mixing the mixture, pressing the mixture into green bodies,
drying the green bodies, performing heat treatment, and then performing washing,
filtration and
drying to obtain the hollow structure potassium
magnesium titanate whisker material. The external diameters of
whiskers of the prepared hollow structure potassium
magnesium titanate whisker material are 0.1-5 microns, the internal diameters of the
whiskers are 0.05-1 micron, and the lengths of the
whiskers are 3-30 microns. The hollow structure potassium
magnesium titanate whisker material is high in
crystallinity and uniform in size.