The present application relates to the technical field of
polyvinyl chloride foam material preparation, and particularly relates to a
polyvinyl chloride electromagnetic shielding foam material and a preparation method thereof, wherein
polyvinyl chloride resin, diisooctyl
phthalate,
magnesium hydroxide,
copper-plated Mxene, light
calcium carbonate, a heat stabilizer, a light-proof agent and a
lubricant are uniformly mixed according to a certain weight ratio, and then are mixed by using a high-temperature mixing
machine, and then are subjected to mold pressing to obtain a PVC
composite material forming sample; the PVC
composite material forming sample is added into a
barrel of a conical twin-screw extruder, is subjected to
extrusion forming, is subjected to pre-stretching, and then is subjected to foaming treatment to obtain the polyvinyl
chloride electromagnetic shielding foam material. After the pre-stretching process, the polyvinyl
chloride electromagnetic shielding foam material is obtained, the
cell morphology in the polyvinyl
chloride electromagnetic shielding foam material has a certain orientation along the stretching direction, the
cell size is large, the specific surface area of the cells is increased, and the electromagnetic shielding performance of the material is improved.