According to the different functions and chemical compositions of accelerators, they can be classified into the following types: thiazoles, sulfonamides, guanidine, thiuram, dithiocarbamate, xanthate, thiourea, and aldehydes.

Sulfonamides and thiazoles are usually the main components of accelerators in formulations, and secondary accelerators are also used to accelerate vulcanization or induce the formation of shorter cross-linking bonds; Thiuram and dithiophosphate are used for rapid sulfurization and as sulfur donors; Caprolactam disulfide is a slowly sulfidized sulfur donor.