Chloroprene rubber was vulcanized with 1,2-ethylenethiourea as accelerator,zinc oxide and magnesium oxide as vulcanizing agents.The non-isothermal vulcanization kinetics of chloroprene rubber was studied by differential scanning calorimetry,the kinetic parameters of vulcanization reaction were calculated by Kissinger and Crane equations,and the kinetics of isothermal vulcaniza-tion reaction was studied by vulcanizer method and the apparent activation energy at the thermal vulca-nization stage was calculated.The results showed that the n-order kinetic model could describe the non-isothermal vulcanization process of chloroprene rubber effectively.The apparent activation energy of the vulcanization reaction was 92.78 kJ/mol and the reaction order was 0.93.The isothermal vulcaniza-tion process of chloroprene rubber could be divided into 3 stages:scorching stage,thermal vulcanization stage and flat vulcanization stage.The thermal vul-canization stage followed the first-order reaction kinetics and the apparent activation energy of the thermal vulcanization stage was 53.38 kJ/mol.
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