Lubricating oils generally consist of two parts, a base oil and an additive. Base oil is the main component of lubricating oil, which determines the basic properties of lubricating oil. Additives can make up for and improve the performance of base oil, and give some new properties. It is an important part of lubricating oil. Composition of lubricating oil: the proportion of base oil is 70-95%, the proportion of additives is 5-30%. The deeper the refining depth of base oil, the better its performance, the lighter its color and the higher its cost.
Additives are the essence of modern high-grade lubricants. Proper selection and reasonable addition can improve their physical and chemical properties, give new special properties to lubricants, or strengthen their original properties to meet higher requirements. According to the quality and performance of lubricating oil, careful selection of additives, careful balance and rational allocation are the key to ensure the quality of lubricating oil. Commonly used additives in internal combustion engine oil are: detergent dispersant, antioxidant and anticorrosive agent, metal passivator, viscosity index improver, pour point depressant, antifoaming agent and demulsifier, etc. Commonly used additives in automotive gear oil are antioxidant and anticorrosive agent, backlog antiwear agent, oil, metal passivator, viscosity index improver, antirust agent, pour point depressant, antifoaming agent and demulsifier, etc. Because most of the commonly used additives in vehicle oil are darker in color, the color of vehicle oil is darker, and the higher the quality level, the larger the amount of additives added, the darker the color. Commonly used additives for industrial oils are: antioxidant and anticorrosive agent, backlog antiwear agent, oiliness agent, antioxidant, metal passivator, viscosity index improver, antirust agent, pour point depressant, antifoaming agent and demulsifier, etc. Because most of the additives used in industrial oils are lighter in color and most of the base oils used are deep refined base oils, the color of industrial oils is usually lighter. So it is impossible to judge the quality of oil from its color alone.
When blending lubricants, petrochemical engineers prepared a proper proportion of additives in the oil. Because the base oil alone does not meet the performance requirements of engine oils, the base oil is a refined component extracted from petroleum and has the most basic viscosity characteristics, while the additives are chemicals to improve and improve the quality of the engine oil. Now we know that lubricating oil is composed of two parts: base oil and additive. The base oil can be either mineral oil or synthetic oil. The so-called mineral oil is a substance used to make lubricating oil directly refined from petroleum. Synthetic oil is a material that is formed by recombining lighter ethane, propane, etc. in crude oil or coal into ethylene and then recombining them through complex chemical changes. The physicochemical properties are stable, contain no impurities, and have many natural properties than mineral oil. The advantages. When formulating additives, one cannot emphasize one-sided performance. In fact, high-quality lubricants are a combination of performance.