Lubricant additives, as the name implies, are compounds added to lubricants to enhance or improve their performance. Although these additives are present in small amounts in lubricants, they play a vital role in significantly improving the performance of lubricants, extending the service life of equipment, and reducing friction and wear.
There are many types of lubricant additives, which are mainly divided into the following categories according to their functions:
1. **Antioxidant**: Delays the oxidation of oil and prolongs the service life. It is one of the most common additives in lubricants.
2. **Antiwear agent and extreme pressure agent**: Under high load or extreme pressure conditions, it prevents wear and scratches on metal surfaces and protects equipment from damage.
3. **Cleaning dispersant**: Maintains the cleanliness of oil, prevents the formation of sludge and carbon deposits, and helps remove the formed deposits.
4. **
Viscosity Index Improver**: Increases the viscosity of oil and keeps the viscosity characteristics of oil stable at different temperatures.
5. **Rust and
Corrosion Inhibitor**: Enhances the anti-rust and anti-corrosion ability of oil on metal parts and protects equipment from moisture and air erosion.
6. **
Pour Point Depressant**: Reduces the freezing point of oil and ensures the fluidity of oil at low temperatures.
7. **
Anti-foaming Agent**: Inhibits the generation of foam in oil and maintains the lubricating properties of oil.
The role of lubricant additives is mainly reflected in the following aspects:
1. **Reducing friction and wear**: By forming a protective film or increasing the strength of the oil film, the friction and wear between metal parts are significantly reduced.
2. **Cleaning and dispersion**: Effectively remove and disperse impurities and sediments in the oil, maintain the cleanliness of the oil, and prevent parts from clogging and damage.
3. **Protecting metal parts**: Preventing metal parts from oxidation, corrosion and wear, and extending the service life of the equipment.
4. **Improving physical properties**: Such as increasing viscosity, lowering freezing point, etc., so that the oil can maintain good lubrication performance under different working conditions.
In short, lubricant additives are an indispensable and important material in modern industry. By scientifically and rationally selecting and applying additives, the performance and service life of lubricants can be significantly improved, providing a strong guarantee for the stable operation of equipment.
