Silicone rubber conductive foam material with multilayer structure and preparation method thereof

The invention relates to the technical field of conductive silicone rubber material preparation, and discloses a silicone rubber conductive foam material with a multilayer structure and a preparation method thereof, the preparation method comprises the following steps: uniformly mixing 100 parts by mass of raw silicone rubber, 1-4.5 parts by mass of a platinum vulcanizing agent, 5-50 parts by mass of a conductive filler and 30-66 parts by mass of calcium carbonate to prepare a conductive layer; uniformly mixing 100 parts by mass of raw silicone rubber, 1-4.5 parts by mass of a platinum vulcanizing agent, 1-50 parts by mass of a conductive filler, 30-66 parts by mass of calcium carbonate, 1-6 parts by mass of a foaming agent and 3-5.5 parts by mass of zinc oxide to prepare a foaming layer; the conductive layer and the foaming layer are pressed and attached to form a multi-layer sheet, and the silicone rubber conductive foam material with the multi-layer structure is prepared after vulcanization and foaming tre