Lignin composite ionic liquid lubricants with excellent anti-corrosion, anti-oxidation, and tribological properties

• Published in: Friction Vol. 11; no. 7; pp. 1239 - 1252
• Main Authors: Zhang, Chaoyang, Yang, Zhiquan, Huang, Qing, Wang, Xingwei, Yang, Wufang, Zhou, Chunyu, Yu, Bo, Yu, Qiangliang, Cai, Meirong, Zhou, Feng
• Format: Journal Article
• Language: English
• Published: Beijing Tsinghua University Press 01.07.2023; Springer Nature B.V; Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering,Yantai 264006,China%Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering,Yantai 264006,China; Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing,Yantai 264006,China; State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China%PetroChina Lanzhou Lubricating Oil R&D Institute,Lanzhou 730060,China%Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing,Yantai 264006,China%State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China
• Subjects: anti-oxidant; Benzotriazole; Composite materials; Corrosion; Corrosion and Coatings; Corrosion prevention; Corrosion resistance; Design; Engineering; Free radicals; Friction; Friction reduction; Green chemistry; Hydroxyl groups; ionic liquid; Ionic liquids; Ions; Kinematics; Laboratories; Lignin; Lubricants; Lubricants & lubrication; Lubrication; Mechanical Engineering; Mechanical properties; Molecular structure; Nanotechnology; Oxidation; Oxidation resistance; Oxidizing agents; Physical Chemistry; Pollution; Polyethylene glycol; Quinones; Research Article; Rheology; Stability analysis; Substrates; Surfaces and Interfaces; Thermal stability; Thin Films; Tribology; Vacuum distillation; Viscosity; Wear resistance; ionic liquid; anti-oxidant; lignin; lubrication
• ISSN: 2223-7690; 2223-7704
• DOI: 10.1007/s40544-022-0657-y

A new type of lubricating material (BTA-P 4444 -Lig) was synthesized by combining lignin with tetrabutylphosphorus and benzotriazole. The tribological properties, corrosion resistance, and anti-oxidation properties of BTA-P 4444 -Lig as a lubricant were investigated. The lubricating material exhibits excellent friction reduction and wear resistance, as well as good thermal stability and excellent oxidation resistance. Mechanistic analysis reveals that the active elements N and P in the lubricating material react with the metal substrate, and the reaction film effectively blocks direct contact between the friction pairs, affording excellent friction reduction and wear resistance. At the same time, the phenolic hydroxyl group in lignin reacts with oxygen free radicals to form a resonance-stable semi-quinone free radical, which interrupts the chain reaction and affords good anti-oxidant activity.