有机硼酸酯添加剂的水解稳定性及摩擦特性

有机硼酸酯作为新型多功能润滑油添加剂受到广泛重视。但硼酸酯易水解，使其在实际应用中受到限制。为此，从分子设计出发，合成了几类含Ｎ 或Ｏ 的内配位硼酸酯，用３ 种方法测定其水解稳定性，并与普通硼酸酯及外配位硼酸酯相比较，总结了硼酸酯的水解规律，实验结果表明，含氮配位硼酸酯的水解稳定性大大高于不含氮的普通硼酸酯和含受阻酚基团的硼酸酯；而内配位硼酸酯的水解稳定性明显好于外配位硼酸酯。同时，摩擦试验表明，含氮硼酸酯的减摩、抗磨性比普通硼酸酯有明显改善。

Hydrolytic stability and triboligical properties of organic borate esters as lubricant additives

Organic borate esters are now under intensive study for their excellent properties as multifunctional lubricant additives. However, they are very susceptible to hydrolysis, which limits their application in lubricating oil. According to molecular design, a series of inter molecular coordination borate esters containing nitrogen or oxygen were synthesized. Their hydrolytic stability was investigated with three methods, and compared with general borate esters and extra molecular coordination borate esters. The experimental results show that the hydrolytic stability of inter molecular coordination borate esters containing nitrogen is greatly better than that of general borate esters and extra molecular coordination borate esters. Tribological test indicates that the introduction of the nitrogen atom into borate esters significantly improve the hydrolytic stability of borate esters as well as their friction reducing and anti wear properties.