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Chain matching between hydrocarbon and fatty acid as interfacial phenomena
Authors:F. Hirano   T. Sakai   N. Kuwano  N. Ohno
Affiliation:1. Kyushu University, Fukuoka 812, Japan;2. Saga University, Saga 840, Japan;1. Department of Mechanical and Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China;2. School of Mechanical Engineering, Qingdao Technological University, 11 Fushun Road, Qingdao 266033, China;1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China;1. University of Technology, Department of Chemical Engineering, Baghdad, Iraq;2. Scop, Iraqi Ministry of Oil, Iraq;3. Chemical Engineering Department, University of Technology, Baghdad, Iraq;4. Petroleum Research & Development Center, Iraqi Ministry of Oil, Iraq;1. Talgo R&D, Patentes Talgo, Paseo del Tren Talgo 2, Las Rozas, 28290 Madrid, Spain;2. Grupo de Investigación en Ingeniería de Máquinas, Universidad Politécnica de Madrid, José Gutiérrez Abascal 2, 28006 Madrid, Spain;3. Física Aplicada e Ingeniería de los Materiales, Universidad Politécnica de Madrid, José Gutiérrez Abascal 2, 28006 Madrid, Spain;4. Teoría de la Señal y Comunicaciones, Escuela Politécnica Alcalá de Henares, Plaza de San Diego s/n, Alcalá de Henares, 28801 Madrid, Spain
Abstract:According to the investigations of Cameron and his coworkers1–5 into the chain-matching phenomena between normal paraffin as a solvent and straight-chain fatty acid as an additive, the optimum condition in boundary lubrication is attained when the chain lengths of the additive and solvent are equal. A series of experiments has been conducted over the past ten years on the role of the chain-matching effect, not only on boundary lubrication but also widely on relevant interfacial phenomena. The results of the investigations are discussed.
Keywords:Tribological phenomena   solvents   additives   chain matching
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