The Role of Surface Temperatures in Tribopolymerization as aMechanism of Boundary Lubrication

表面温度在作为边界润滑机制的摩擦聚合中的作用

• 批准号: 8712386
• 负责人: Michael Furey
• 金额: $ 21.86万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-10-01 至 1990-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8712386&HistoricalAwards=false
• 关键词: Role; Surface; Temperatures; Tribopolymerization; aMechanism

The primary objective of this research is to obtain a better understanding of tribopolymerization--the planned or intentional formation of polymeric films directly on rubbing surfaces--as a mechanism of boundary lubrication, with special emphasis on the role of surface temperatures on the process. The behavior of selected monomers capable of forming surface polymers under tribological contact by polycondensation as well as addition reactions will be investigated in a research program which couples the following experimental systems or techniques: (a) an advanced rotating sapphire disk/infrared microscope device to determine surface temperatures produced by friction; (b) surface analytical techniques- -including Fourier Transform Infrared Spectroscopy--to study the characteristics of thin polymer surface films formed; and (c) other methods which couple thermal effects with surface reactions and polymerization. The significance of this research is that it represents a rational and innovative approach to the design of chemical structures to act as boundary lubricants to reduce wear and surface damage in tribological processes. Unlike conventional antiwear additives which chemically react with the solid surface (e.g., iron) to from a protective layer, this approach involves the deposition of a surface film which acts to reduce adhesion, wear, and damage. The principal investigators believe that a better understanding of the tribopolymerization process-- including the role of surface temperature, catalysis, and electron emission in tribological contact--will open the door to new, extremely effective, and unconventional approaches to minimizing wear in a wide variety of systems. This should make it possible to design specific antiwear additives for given tribological systems.

这项研究的主要目的是更好地理解摩擦聚合（有计划或有意地直接在摩擦表面形成聚合物膜）作为边界润滑的机制，特别强调表面温度对该过程的作用。 选定的能够通过缩聚和加成反应在摩擦接触下形成表面聚合物的单体的行为将在一个研究计划中进行研究，该计划结合了以下实验系统或技术：（a）先进的旋转蓝宝石盘/红外显微镜装置，用于确定摩擦产生的表面温度； (b) 表面分析技术——包括傅里叶变换红外光谱——研究形成的聚合物表面薄膜的特性； (c) 将热效应与表面反应和聚合结合起来的其他方法。 这项研究的意义在于，它代表了一种合理且创新的化学结构设计方法，可充当边界润滑剂，以减少摩擦过程中的磨损和表面损伤。 与传统的抗磨添加剂与固体表面（例如铁）发生化学反应形成保护层不同，这种方法涉及沉积表面薄膜，其作用是减少粘附、磨损和损坏。 主要研究人员认为，更好地了解摩擦聚合过程（包括摩擦接触中表面温度、催化作用和电子发射的作用）将为开发新的、极其有效且非常规的方法打开大门，以最大限度地减少各种系统中的磨损。 这使得为​​给定的摩擦系统设计特定的抗磨添加剂成为可能。