3,9-bis[1,1-dimethyl-2{β-(3-tertbutyl-4-hydroxy-5-methylphenyl)propionyloxy}ethyl]-2,4,8,10-tetraoxaspiro-undecane(AO80) and the phenolic resin(PR) were added into the acrylonitrile-butadiene rubber(NBR) to prepare the vulcanized NBR/PR/AO80 rubbers.The structures of vulcanized rubbers were characterized by DSC,FTIR and SEM.And their damping and mechanical properties were investigated in detail.The results showed good compatibility of AO80 in the blend system,which had a single peak in the temperature spect...