Natural Rubber Crosslinking Structure and Homogenization Stress Affected by Zinc 1,5-Pentylidene Dithiocarbamate
The crosslinking structure and homogenization stress of natural rubber(NR)were studied by using zinc 1,5-pentyldithiocarbamate(ZPDC)as accelerator.It was found that the crosslinking bond of the vulcanizate of accelerator ZPDC combined with NR was mainly polysulfide bond.Compared with the similar accelerator zinc dibutyldithiocarbamate(BZ),it had a higher content of polysulfide bond,which gave the rubber a better homogenizing stress effect,mainly in the significant improvement of tear resistance.In addition,through the analysis of the vulcanization process and mechanical properties of the NR compound accelerator ZPDC,the results show that the suitable vulcanization temperature conditions are 120-130 ℃,the amount of 1.5-2.0 phr,and the vulcanizate shows the best homogenization stress effect.
Natural rubberHomogenization force efectCrosslinking structureTear resistance
NETL
NSTL
万方数据
维普
