The Molecular Magic of Synthetic Esters: How Do ester Functional Groups Determine Properties?

May 16,2025

The Molecular Magic of Synthetic Esters: How Do ester Functional Groups Determine Properties? ​

The ester group is formed by the connection of a carbonyl group (C=O) and an ether bond oxygen (-O-). The presence of the carbon-oxygen double bond in the carbonyl group gives the ester group obvious polarity. The polarity of the ester group enables the synthetic ester molecules to adsorb on the metal surface, forming a protective film arranged in a directional manner. Self-healing effect: The ester group can break and reorganize under high pressure, filling friction micro-pits and reducing wear. Bond energy advantage: The bond energy of the C-O bond in the ester group (360 kJ/mol) is higher than that of the C-C bond in the fatty acid ester (345 kJ/mol), and it is not easy to break at high temperatures. Antioxidant property: Ester groups can be oxidized preferentially to form acidic substances, which then react with additives to prevent the formation of sludge. The hydrolyzability of ester groups: In the natural environment, ester groups are easily decomposed by esterase secreted by microorganisms into glycerol and fatty acids, achieving biodegradation.

#JD Lubricant Additives  # Synthetic Ester   # Molecular Design

 

 

 

 

 

 

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