季戊四醇油酸酯膜厚测量及薄膜润滑研究

Research on thin film lubrication and film thickness measurement of pentaerythritol oleate

运用光干涉法相对光强原理,通过纳米级润滑膜厚度测量仪测量了不同温度、不同载荷下纳米间隙中环境友好润滑剂季戊四醇油酸酯的油膜厚度。探究了膜厚与速度、载荷、温度之间的关系,观察了薄膜润滑现象。结果表明:在对数坐标系下,膜厚与速度具有一定的线性关系,在速度较高时,线性关系更强,润滑剂具有流体效应。载荷对膜厚的影响远小于速度对膜厚的影响,温度对膜厚的影响主要表现在温度越高时,润滑剂的黏度越低,润滑剂的膜厚越薄。

Appling relative optical interference intensity technique,it measures the film thickness of environmentally friendly lubricant pentarythriol oleate at different temperature and load,analyzes the relationship such as the film thickness and velocity,the film thickness- load and temperature. In addition,the paper reveals the phenomenon of thin film lubrication. The result shows that the film thickness of lubricant is linear to the velocity in logarithmic coordinates,and the linear relationship is stronger at higher speed,the lubricant has the fluid effect.The impact of the load on the film thickness is smaller than the velocity,the viscosity decides the influence of temperature to the film thickness.