The invention discloses a preparation method for inorganic-organic modified attapulgite clay. The preparation method comprises the steps as follows: dissolving
phosphate in water while stirring, then adding the preprocessed attapulgite clay to prepare a suspension liquid with the
mass concentration of 5 to 20%; enabling the suspension liquid to pass through a 200-mesh
sieve so as to remove impurities, reacting for 1 to 3 h at
room temperature, then adding a certain amount of cationic surfactant, and continuously reacting for 1 to 2 h at the temperature of 20 to 90 DEG C so as to obtain pulp; and centrifuging, dehydrating,
drying and
grinding the obtained pulp so as to obtain the inorganic-organic modified attapulgite clay, wherein the addition amount of the
phosphate is 1 to 10% of the attapulgite clay by
mass, and the addition amount of the cationic surfactant is 0.05 to 5% of the attapulgite clay by
mass. According to the preparation method, the process is easy to operate, the obtained inorganic-organic modified attapulgite clay has the characteristics of high
viscosity,
shear thinning and the like, and the requirements of
fine chemical engineering industries, such as coatings, printing inks and
cosmetics, on mineral thickeners are satisfied.