Development and Application of Electromagnetic Shielding Material with Silicone Rubber Graphene Structure

摘要

Abstract A new kind electromagnetic shielding material with silicone rubber graphene structure was developed and evaluated. The silicone rubber compound material was prepared by vinyl silicone oil, hydrosilicone oil and compound coupling agent. It was made into 1-3 mm silicone rubber sheet by calendering process, and its dielectric strength, leakage resistance and mechanical properties were investigated. The graphene was modified to form graphene modified slurry, and the adhesive was introduced to disperse the graphene slurry. The initial electromagnetic shielding effectiveness, tensile strength and dielectric strength of this material are 82 dbm, 6.5 MPa and 25.3 kv/mm, respectively. The results from ultraviolet and thermal aging tests show that the intercalation between silicone rubber and graphene is stable and this material has good aging resistance. This newly developed electromagnetic shielding materials can meet the requirements of external insulation and electromagnetic shielding for field maintenance operation robots.