Preparation method of flexible magnetic film for tactile feedback

A preparation method of a flexible magnetic film for tactile feedback comprises the steps that different molds are manufactured through high-precision 3D printing, NdFeB powder and PDMS are mixed and then injected into the molds, a flexible composite magnetic film with the controllable thickness and shape is prepared, then the prepared magnetic film is folded multiple times in different folding modes, the folded magnetic film is put into a magnetizer to be magnetized, and the flexible magnetic film for tactile feedback is obtained. The flexible magnetic film with different magnetic poles uniformly distributed in different areas of the surface is manufactured, when a magnetic field is externally added to the prepared magnetic film, the flexible magnetic film is subjected to a force capable of being obviously sensed by skin in the magnetic field, and different touch effects can appear on the surface of the magnetic film, namely, different textures are designed on the surface of the magnetic film; the flexible m