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

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