Corrosion InhibitorThe molecule forms an adsorptive protective film on the metal surface. The rust inhibitor can create a robust adsorption layer on the metal surface, inhibiting contact with oxygen and water, particularly water, to prevent rusting. On the metal surface, due to the electrostatic attraction of polar dipoles, physical adsorption occurs. Some rust inhibitors' polar groups can also undergo a chemical reaction with the metal surface, resulting in chemical adsorption. This adsorptive layer can prevent the侵蚀 of the metal surface by air oxygen, moisture, and acidic substances, thereby achieving the rust prevention effect.

Corrosion inhibitors exhibit solubilizing effects on water and polar substances. Particularly, sulfonates and carboxylate soaps of corrosion inhibitors can absorb and disperse water and acidic polar substances within oil, encapsulating them in micelles and aggregates. This process effectively eliminates their erosive effects on metal surfaces, while also neutralizing acids with their basic soap components.

The water displacement effect of the rust inhibitor can displace water or water droplets on the metal surface. This effectively removes moisture from the metal surface, serving as a dehydration function.