Sealing element for electromagnetic shielding and preparation method thereof

The invention relates to the technical field of sealing materials with the IPC classification number of C09J183/06, in particular to a sealing piece for electromagnetic shielding and a preparation method of the sealing piece. The sealing element comprises a sealing element main body and an electromagnetic shielding part; the electromagnetic shielding part is arranged on the outer surface of the sealing element main body; the sealing element main body is made of an elastic material A, and the elastic material A is prepared from raw rubber A, modified filler, silicone oil, a catalyst, an auxiliary agent and a vulcanizing agent; the electromagnetic shielding part is an elastic material B, and the elastic material B is prepared from the following raw materials: a rubber material, a shielding material, a silane coupling agent, a lubricant, vinyl silicone oil, modified tetrapod-like zinc oxide whiskers, a cross-linking agent, a structured control agent and a vulcanizing agent. The sealing element provided by the in