Thermoplastic elastomer composite material replacing shielding magnetic ring and preparation method thereof

The invention relates to a thermoplastic elastomer composite material for replacing a shielding magnetic ring and a preparation method thereof. The composite material is prepared from the following components in parts by mass: 15 to 35 parts of nanometer iron oxide, 5 to 15 parts of nano zinc oxide, 15 to 35 parts of nano manganous-manganic oxide, 0.05 to 0.2 part of functional auxiliary component, 10 to 30 parts of polypropylene resin, 10 to 30 parts of ethylene acrylate copolymer, 1 to 5 parts of POE grafted maleic anhydride, 0.1 to 1 part of silane coupling agent and 0.1 to 3 parts of a processing aid. According to the invention, soft magnetic materials such as nano iron oxide, nano zinc oxide, nano manganous-manganic oxide and the like are added into the thermoplastic elastomer; the thermoplastic elastomer prepared by the method replaces the traditional ball milling and sintering processes, is convenient to process, has high magnetic conductivity and saturated magnetic induction strength, can be molded ou