<,正,>,By incorporating copper sulfate（CuSO,4,）particles into acrylonitrile butadiene rubber（NBR）followed by heat pressing,a novel vulcanization method is developed in rubber through the formation of coordination crosslinking.This method totally differs from traditional covalent or non-covalent vulcanization approaches of rubber.No other vulcanizing agent or additional additive is involved in this process.By analyzing the results of DMA,XPS and FT-IR,it is found that the crosslinking of CuSO,4, particles filled NBR was induced by in situ coordination between nitrogen atoms of nitrile groups （-CN）and copper ions(Cu,2+,)from CuSO,4,.SEM and EDX results revealed the generation of a core（CuSO,4, solid particle）- shell（adherent NBR）structure,which leads to a result that the crosslinked rubber has excellent mechanical properties. Moreover,poly（vinyl chloride）（PVC）and liquid acrylonitrile-butadiene rubber（LNBR）were used as mobilizer to improve the coordination crosslinking of CuSO,4,/NBR.The addition of PVC or LNBR could lead to higher crosslink density and better mechanical properties of coordination vulcanization.In addition,crystal water in CuSO,4, played a positive role to coordination crosslinking of rubber because it decreased the metal point of CuSO,4, and promoted the metal ionization.