Differences between different air compressor oils (part)

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Depending on the base oil used, air compressor oil can be divided into mineral compressor oil and synthetic compressor oil. Synthetic compressor oil can be divided into different types according to the different synthetic base oils.: Ester compressor oil, PAO compressor oil, polyether polyester compressor oil and silicone compressor oil. Mineral compressor oils are compared to synthetic compressor oils due to their base oil being refined from petroleum: It has low flash point, high pour point, low viscosity index, poor high temperature stability, poor oxidation stability, high carbon residue, high volatilization, high oil consumption, low oil film strength, and easy wear. Therefore, for screw compressors or other types of compressors with large compression ratios and large displacements, synthetic compressor oils are increasingly used. The base oil of ester compressor oil is diester or polyol ester, which has the following advantages in compressor applications:: Good oxidation stability, the oil change period is extended by 8-10 times, less carbon residue, reducing wear problems, and serious problems caused by lax closing of the exhaust valve of the piston compressor. Low volatility, reducing oil consumption by 30%. High flash point and fire point, safer. High polarity, low friction coefficient, high oil film strength, reducing wear. It is measured that ISO32 diester compressor oil has a load-bearing capacity 2 times higher than that of mineral compressor oil of the same viscosity. The thermal conductivity is 15% higher than that of mineral oil, and the specific heat is large. Therefore, it is especially suitable for compressors with operating temperatures higher than 90°C and high operating pressures to reduce the operating temperature of the oil tank and lubricating oil. PAO compressor oil has the following advantages: Good oxidation stability and thermal stability, the oil change period is extended by more than 8 times. Less carbon residue, low volatilization, high flash point, safe, low oil consumption. Good hydrolytic stability, better than ester compressor oil in humid environment. Low pour point, suitable for operation in low temperature and cold environments. Good compatibility with mineral oil-compatible sealing materials. Good anti-corrosion polyether polyester compressor oil has the following advantages.: Good oxidation stability, the oil change period is 8 times longer than that of mineral oil, very little carbon residue, very good cleanliness, large thermal conductivity, large specific heat, easy to reduce the operating temperature of the oil tank and lubricating oil, good lubrication performance (due to the mixture of highly polar ester oil) Shanghai Derun Petrochemical Co., Ltd. 16:37 Edit ]