The technical development of chain oil has gone through three stages: mineral oil chain oil, polyether chain oil and synthetic ester chain oil, from low grade to high grade.
The composition of mineral oil is complex, containing saturated, unsaturated chain and ring hydrocarbons. The chain oil with mineral oil as Base Oil is economical and effective for lower service temperature. However, with the development of science and technology, it can not meet the use requirements. The mineral oil oxidizes rapidly at 140 ℃~160 ℃, forming carbon deposit and high volatility. Therefore, it is necessary to select synthetic high-temperature chain oil with simple components and stable chemical structure. As the base oil for synthesizing high-temperature chain oil, polyether has a high viscosity index and excellent high-temperature resistance. When used in the range of no more than 220 ℃, it has less coking, is not volatile, and has good lubrication performance. In addition, polyether oil has an early development history, mature technology, stable quality, sufficient market supply and reasonable price, so it is an ideal choice for high-temperature chain oil base oil. With the increase of the service temperature, it is found that the synthetic high-temperature chain oil based on polyether has obvious increase in coking, high volatility and high consumption when the service temperature exceeds 220 ℃, which greatly affects the normal use. At this time, high-temperature chain oil based on synthetic ester came into being. The unique ester molecular structure of synthetic ester is rarely coking even at high temperature above 220 ℃, with extremely low volatility and low consumption. The maximum use temperature can reach 260 ℃. The actual use results show that the synthetic ester high temperature chain oil is superior to the polyether high temperature chain oil in coking and consumption when used at temperatures above 150 ℃, and the synthetic ester high temperature chain oil has become the highest quality chain oil in the market at present.
Synthetic ester high temperature chain oil products have been widely used in the textile printing and dyeing industry, plastic film industry, automobile manufacturing industry, electroplating, ceramic kiln and other high temperature equipment transmission chain since its appearance. Especially in the textile printing and dyeing industry, it can fully meet the use requirements of domestic and imported heat setting machines, dryers, steamers, printing machines and other equipment under various conditions, and has a high popularity and market share.
