作为橡胶加工成形过程中最重要的步骤之一,橡胶硫化直接影响橡胶制品的性能。与单用硫黄相比,少量的促进剂与硫磺配合可以极大地提高硫化速率,改善硫化胶的性能。但目前橡胶硫化促进剂普遍具有潜在的人类健康和环境风险问题,同时硫化促进效能较低、功能单一。因此,开发无毒、无或少氧化锌、高效、多功能的新型硫化促进剂对橡胶工业具有非常重要的意义。本文首先简要介绍了橡胶硫化促进剂的发展历程,然后综述了近年来新型橡胶硫化促进剂的研究进展(包括离子液体促进剂、新型二硫代氨基甲酸盐类促进剂、稀土促进剂、以及含新型副促进剂的硫化并用体系等),并对橡胶硫化促进机理、新型橡胶硫化促进剂的设计进行了展望。
Vulcanization, as the key step in rubber process, directly affects the processing and performance of rubber products.Compared with sulfur alone, the presence of small amounts of accelerator together with sulfur can significantly improve the properties of final vulcanisate.However, the present accelerators generally pose potential risks to human health and the environment, and are suffering with their poor efficiency and sole function.Therefore, developing novel green accelerator that is non-poisonous, free or low zinc oxide content added, high-effective and multifunctional, is critical for rubber industry.This review briefly introduces the development of rubber, and the recent progresses on accelerator including the ionic liquids acceleration agents,the new bis(dithiocarbimato)zinc(Ⅱ)accelerators, the rare earth vulcanizing accelerator and the novel secondary accelerators.Besides, the prospect of the in-depth study of vulcanization mechanism and the development of novel vulcanization accelerator are proposed.