Types of Lubricant Additives
Created on 08.26
Lubricant additives are specialized chemical substances incorporated into base oils. They comprehensively improve the overall performance, stability and service reliability of lubricants, delivering core functions including wear protection, rust and corrosion prevention, thermal stability improvement and operational optimization.
The mainstream lubricant additives applied in the industry are categorized and introduced as follows:
1. Detergents
Detergents remove soot, carbon deposits and surface sludge on mechanical parts. They slow down oil contamination, extend oil service intervals and reduce equipment maintenance costs. Industry mainstream types: sulfonate detergents, phenate detergents, salicylate detergents and trace metal-based cleaning agents.
2. Anti-wear & Extreme Pressure (AW/EP) Agents
These agents reduce friction and mechanical wear under operating and heavy-load conditions, alleviate component abrasion and effectively extend the service life of both equipment and lubricants. Industry mainstream types: sulfur-based, phosphorus-based, sulfur-phosphorus composite and polyether ester anti-wear agents.
3. Corrosion & Rust Inhibitors
They suppress chemical corrosion caused by moisture, metal compounds and foreign impurities in lubricating oil, protect pipelines and lubrication system parts, and avoid equipment failure induced by corrosion. Industry mainstream types: phosphate corrosion inhibitors, fluorine-modified anti-corrosion agents and silicon-based protective agents.
4. Antioxidants
Antioxidants inhibit oil oxidation and thermal degradation, delay lubricant aging, and greatly improve high-temperature oxidation resistance and oil durability. Industry mainstream types: phenolic antioxidants, amine antioxidants, sulfur-based and phosphorus-based auxiliary antioxidants.
5. Biocide & Stabilization Inhibitors
They restrain microbial reproduction in lubricating oil, prevent oil deterioration and emulsification, and ensure long-term stable operation of the lubrication system.Industry mainstream types: thiazoline biocides, imidazolidine stabilizers and sulfonamide protective inhibitors.
6. Anti-foam Agents
Anti-foam agents eliminate and restrain foam generation and accumulation in circulating lubricants, improve oil circulation efficiency, avoid cavitation, and enhance operational stability and anti-splash performance.Industry mainstream types: silicone anti-foam agents, polyether composite anti-foam agents and oil-soluble defoamers.
7. Demulsifiers & Water Control Agents
Such agents separate moisture from lubricating oil, adsorb and disperse harmful impurities, reduce water-caused emulsification, rust and mechanical failure risks, and significantly improve lubrication efficiency and oil stability. Industry mainstream types: polymer demulsifiers, organic salt water separation agents and composite water-control stabilizers.
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