Effect of Accelerator ZBEC on the Curing and Mechanical Properties of Vulcanized NR Latex Film

The effect of dithiocarbamate zinc(ZDC),dibenzyl dithiocarbamate zinc(ZBEC) in sulfur curing system and ZnO content,curing temperature on the curing and mechanical properties of vulcanized NR latex film were investigated.The results showed that the cure rate was significantly improved by increasing the accelerantor amount or ZnO content or increasing curing temperature of the film,and the impact of ZBEC on the degree of improvement in cure rate was slightly faster than that of ZDC.With ZBEC amount increased(0.5~1.0 phr),the modulus,tensile strength and tear strength first increased and then decreased.With ZDC amount increased(0.5~1.0 phr),the modulus,tensile strength increased gradually,and tear strength first increased and then decreased.With the curing temperature increased,the modulus,tensile strength and tear strength of both ZBEC and ZDC promote system first increased and then decreased.