通过谷氨酸、二硫化碳和氯化镧合成了一种新型的多功能硫化促进剂——谷氨酸二硫代氨基甲酸镧(La-GDTC),利用紫外-可见吸收光谱、核磁共振13C谱、元素分析、红外光谱(FTIR)和X射线光电子能谱(XPS)等分析手段证实了La-GDTC中的二硫代氨基甲酸根和羧酸根与镧离子形成了配位络合结构.通过研究SBR/La-GDT℃混炼胶的硫化性能,结果显示随着La-GDTC加入量的增多,SBR/La-GDTC混炼胶的正硫化时间(tc90)从17.23 min减少至12.47 min,证实了La-GDTC的加入能够很好地促进橡胶的硫化,这与SBR/La-GDTC混炼胶的活化能计算结果是一致的.
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