Preparation and performance of graphene/conductive carbon black compounded rubber material for bearings
The conductive rubber materials with better damping performance were prepared by using graphene/conductive carbon black(CCB)as functional fillers and brominated butyl rubber(BIIR)as base rubber.The mechanical properties,dynamic mechanical properties(DMA)and resistivity test experiments of 10 formula-tions with different graphene/CCB components were performed to investigate the influence law of adding gra-phene and CCB on the performance of BIIR.The results show that CCB has a reinforcing effect on the BIIR material,and the synergistic use of graphene/CCB can effectively improve the damping and conductive prop-erties of BIIR.The tensile and tear strength of BIIR/CCB composites reach 20.28 MPa and 45.66 kN/m when 40 g CCB is added to every 100 g total rubber.The maximum loss tangent of the BIIR/CCB/graphene composite rubber material is increased to 0.5 with a resistivity of 3 646 Ω·cm when the mass ratio of CCB to grapheme composition is 40∶10.The optimal ratio of CCB to graphene components for the composites is 40∶5.The prepared new composite material has good mechanical properties,damping properties and electrical con-ductivity.The results can provide a reference for the preparation of high damping conductive rubber bearings.
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维普
