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以苯硼酸、正丁醇、二硫化碳及氯乙醇等为原料,制备了一种苯硼酸酯润滑油添加剂(简称PhBA),采用元素分析和红外光谱对所得产物的结构组成进行了表征;利用“半衰期法”和“湿热箱加速水解试验”考察了其水解稳定性;在四球摩擦磨损试验机上系统考察了添加剂PhBA在基础油中不同含量、不同载荷下的摩擦学性能;利用三维轮廓仪、X射线光电子能谱仪(XPS)分析了钢球的磨损表面形态。结果表明,添加剂PhBA具有良好的水解稳定性,当PhBA加入量(质量百分数)为2.0%时,其在基础油HVI H200中的P B值、综合磨损值(ZMZ)、抗磨性能达到最佳,优异的极压、抗磨、减摩性能源自PhBA在摩擦过程中形成的化学反应膜以及吸附膜。
A phenylboronic acid ester lubricant additive (abbreviated as PhBA) was prepared by using phenylboronic acid, n-butanol, carbon disulfide and chloroethanol as raw materials. The structure and composition of the obtained product were characterized by elemental analysis and infrared spectroscopy. “Half-life method” and “wet-hot box accelerated hydrolysis test” to investigate its hydrolytic stability; Tribological properties of the additive PhBA in different content and different loads in the base oil were systematically investigated on a four-ball friction and wear tester; Profiler, X-ray photoelectron spectroscopy (XPS) analysis of the ball wear surface morphology. The results show that the additive PhBA has good hydrolytic stability. When the content of PhBA is 2.0%, its PB value, synthetic wear value (ZMZ) and wear resistance are the best in the HVI H200. Excellent extreme pressure, anti-wear, anti-friction properties derived from PhBA friction process in the formation of chemical reaction membrane and adsorption film.