By incorporating inorganic metal salts particles into nitrile butadiene rubber (NBR)

a novel vulcanization method was developed through the coordination reaction between the nitrile group (-CN) and metal ions in solid phase.A new non-covalent coordination crosslinking network system was established

which totally differs from traditional sulfur vulcanization approaches.Further more

the coordinated rubber materials were with excellent mechanical properties

which can be employed as flexible rubber materials as well as brittle or tough plastic materials. Two leading influencing factors of the coordination reaction

diameters of metal salts particles and acrylonitrile contents

were discussed in this paper.Some ways to improve the efficiency of coordination vulcanization were presented

such as adding crystal water and plasticizers etc.