Study on Thermal Stability and Microstructure of Insoluble Sulfur and Its Application in Tire Belt Compound
DING Yuanqiang;WANG Baojin;ZHANG Yanling;ZHENG Shanliang;YANG Xu;ZHOU Hongbin;EVE Rubber Research Institute Co.,Ltd;Stone Testing Technology Co.,Ltd;
The thermal stability of domestic and imported insoluble sulfur(IS) was evaluated by using a melting point method with differential scanning calorimetry(DSC). The microstructure and dispersion state of IS in rubber were analyzed by scanning electron microscope(SEM). Application of IS in tire belt compound was tested. The results showed that the thermal stability of domestic IS was worse than that of imported IS,and the content of ash was higher. The dispersion of IS in rubber was related to its microstructure. The domestic IS had compact massive structure,while the imported IS possessed loose porous structure,which was more easily dispersed in rubber. The physical properties and adhesive properties of the belt compound with domestic IS were slightly better than those of the compound with imported IS. The highspeed performance and durability performance of the tires made with domestic IS belt compound were better than those of the tire with imported IS belt compound.
【CateGory Index】： TQ330.38