Different organic polyols were investigated as accelerators for different type of vulcanization system such as sulphur, metal oxide, peroxide with different rubbers such as natural rubber (NR), styrene butadiene rubber (SBR), butadiene rubber (BR), butyl rubber (IIR), nitrile rubber (NBR) and chloroprene rubber (CR). Among all the polyols studied, glycerol found to be the most efficient accelerator for sulphur vulcanization of unsaturated rubbers. Moreover, from rheometric study glycerol was found to be reversion free and scorch safe accelerator. A detailed study was performed with glycerol for sulphur vulcanization of silica filled, SBR + BR-based standard passenger car radial (PCR) tire tread compound and plausible mechanism of acceleration was proposed. Finally, from the PCR tyre tread compound 70% of conventional accelerators, namely N-cyclohexyl-2-benzothiazole sulfenamide (CBS) and di-phenyl guanidine (DPG) were replaced with 5 phr (parts per hundred gram of rubber) of glycerol and properties of the vulcanized compounds were measured. The results evidenced that glycerol could efficiently replace 70% conventional accelerators (CBS + DPG), with additional improvement of scorch time by 68%, tensile strength by 31.5%, elongation at break by 75.6% and tear strength by 9.4% of the PCR tyre tread compound. The increase in mechanical properties was due to the improvement in compatibility between silica and rubber in presence of glycerol. Moreover, glycerol is an environmentally benign (nitrogen free, halogen free), fossil free, low-cost material.

研究了不同的有机多元醇作为不同类型硫化体系的促进剂，如硫磺、金属氧化物、过氧化物与不同橡胶，如天然橡胶 (NR)、丁苯橡胶 (SBR)、丁二烯橡胶 (BR)、丁基橡胶 (IIR) 、丁腈橡胶（NBR）和氯丁橡胶（CR）。在所有研究的多元醇中，发现甘油是不饱和橡胶硫磺硫化最有效的促进剂。此外，从流变学研究中发现甘油是无还原和焦烧安全的促进剂。使用甘油对二氧化硅填充的 SBR + BR 基标准乘用车子午线 (PCR) 轮胎胎面胶进行了详细研究，并提出了可能的加速机制。最后，从 PCR 轮胎胎面胶中提取 70% 的常规加速剂，即，将 N-环己基-2-苯并噻唑次磺酰胺 (CBS) 和二苯基胍 (DPG) 替换为 5 phr（每百克橡胶的份数），并测量硫化胶料的性能。结果表明，甘油可以有效替代70%的传统促进剂（CBS+DPG），并额外提高PCR轮胎的焦烧时间68%、拉伸强度31.5%、断裂伸长率75.6%和撕裂强度9.4%胎面胶。机械性能的提高是由于在甘油存在下二氧化硅和橡胶之间相容性的改善。此外，甘油是一种环保（无氮、无卤素）、无化石、低成本的材料。