二丁基二硫代氨基甲酸铋与二丁基二硫代氨基甲酸酯的抗氧协同性能

发布时间：2018-02-14 04:37

本文关键词： 二丁基二硫代氨基甲酸铋二丁基二硫代氨基甲酸酯薄层油膜微氧化实验抗氧协同　出处：《石油学报(石油加工)》2017年06期 　论文类型：期刊论文

【摘要】：采用薄层油膜微氧化实验考察了在聚-α-烯烃(PAO)基础油中二丁基二硫代氨基甲酸铋(BiDDC)与二丁基二硫代氨基甲酸酯(ADDC)的抗氧协同性能,并借助傅里叶红外光谱和气相色谱/质谱联用技术分析了油样氧化过程中ADDC的含量变化。实验结果表明,BiDDC和ADDC添加剂都具有一定的抗氧化性能,当两者复配后,能进一步降低油样的质量损失、减少沉积物和延长氧化诱导时间,表现出了良好的抗氧协同作用。通过气相色谱/质谱联用技术分析,发现加入BiDDC添加剂能够有效减缓ADDC添加剂的消耗速率,这可能是由于BiDDC中的铋原子与ADDC氧化过程中产生的硫代氨基甲酸自由基中的硫原子配位形成了更稳定的自由基,进而提高氧化自由基的消除效率,表现出良好的抗氧协同作用。
[Abstract]:The anti-oxygen synergistic properties of bismuth dithiocarbamate (BiDDCD) and bismuth dithiocarbamate dithiocarbamate (ADDCD) in poly- 伪 -olefin (PAO) base oil were investigated by thin layer oil film microoxidation test. The content changes of ADDC in the process of oil oxidation were analyzed by Fourier transform infrared spectroscopy (FTIR) and gas chromatography / mass spectrometry (GC / MS). It can further reduce the mass loss of oil samples, reduce the sediment and prolong the oxidation induction time, showing good anti-oxygen synergistic effect. It is found that the addition of BiDDC additives can effectively slow down the consumption rate of ADDC additives, which may be due to the coordination of bismuth atoms in BiDDC with the sulfur atoms in the thiocarbamate radicals produced during the oxidation of ADDC to form more stable free radicals. Thus, the removal efficiency of oxidized free radicals is improved and the synergistic effect of anti-oxygen is shown.
【作者单位】：空军勤务学院航空油料物资系;
【基金】：国家自然科学基金项目(51575525) 江苏省自然科学基金项目(BK20141123,BK20161188)资助
【分类号】：TE624.82

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