The invention discloses a preparation method of a
halloysite-based soft magnetic ferrite wave absorbing material. The preparation method comprises the following steps: S1, after using
ferrous chloride,
nickel chloride, aluminum
chloride and
magnesium chloride as main materials, adding
hydrochloric acid, and dissolving the main materials, then adding
barium oxide,
cerium oxide,
titanium oxide and
vanadium oxide, and stirring until completely dissolving, thus obtaining a material 1; S2, adding
halloysite into an
ionic solution, carrying out
ultrasonic dispersion, adding the material 1, and uniformly mixing, thus obtaining a material 2; S3, uniformly mixing
ammonium hydroxide, 1,3-
propane diamine and
triethanolamine according to a volume ratio that
ammonium hydroxide to 1,3-
propane diamine to
triethanolamine is (3 to 5) to (1 to 2) to (2 to 3), thus obtaining a mixed alkaline solution; S4, dropwise adding the mixed alkaline solution into the material 2, continuously stirring during a dropwise adding process, rising the temperature to 50 to 70 DEG C after completely finishing dropwise adding, standing and keeping warm, filtering after cooling, and
drying, thus obtaining a material 3; S5, carrying out
microwave sintering on the material 3 in
nitrogen gas, and cooling, wherein
nitrogen gas
partial pressure and the
sintering temperature meet a following relation expression: 1gPnitrogen gas equals to k-1454 / (T+273). According to the preparation method disclosed by the invention, the wave absorbing performance of a ferrite material is increased, the density is small, the weight is light, and actual using requirements are met.