Wang Shengpei, Yu Shasha, Feng Jianxiang, Liu Shenggao
Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences No. 1219, Zhongguan West Road Ningbo Zhejiang 315201 P. R. China
University of Chinese Academy of Sciences Beijing 100049 P. R. China.
RSC Adv. 2019 Oct 30;9(60):35059-35067. doi: 10.1039/c9ra05490a. eCollection 2019 Oct 28.
A metal-free and phosphorus-free novel multifunctional additive ()-4-((3-(-butyl)-2-((difluoroboranyl)oxy)-5-((octylthio)methyl)benzylidene)amino)--phenylaniline (difluoroboron derivative 4a) was synthesized and characterized. The results show that its antioxidation and tribological properties are better than those of base oil, diphenylamine and zinc dialkyldithiophosphate (ZDDP), and it can also increase the extreme pressure performance of the base oil. In addition, it can be found that the diphenylamine functional group, boron and fluorine are the main contributors to the excellent antioxidation and antiwear properties of difluoroboron derivative 4a, respectively. Finally, the results of X-ray photoelectron spectroscopy on the worn surfaces reveal that BO, FeO, a N-containing organic compound and iron fluoride comprise the boundary films, which effectively improve the difluoroboron derivative 4a's antiwear properties.
合成并表征了一种无金属、无磷的新型多功能添加剂（）-4-（（3-（-丁基）-2-（（二氟硼基）氧基）-5-（（辛硫基）甲基）亚苄基）氨基）- -苯胺（二氟硼衍生物4a）。结果表明，其抗氧化性能和摩擦学性能优于基础油、二苯胺和二烷基二硫代磷酸锌（ZDDP），并且还能提高基础油的极压性能。此外，可以发现二苯胺官能团、硼和氟分别是二氟硼衍生物4a优异抗氧化和抗磨性能的主要贡献因素。最后，磨损表面的X射线光电子能谱结果表明，BO、FeO、一种含氮有机化合物和氟化铁构成了边界膜，这有效地提高了二氟硼衍生物4a的抗磨性能。
