Why metro vehicles use water-based damping coatings
Damping coatings go on metro vehicles to reduce vibration and noise, raise passenger comfort and protect the vehicle structure.
From solvent-based to water-based
Traditional damping coatings are organic-solvent based; water-based coatings use water as the base. Solvent use, health and fire-safety requirements during application should be confirmed from the technical data sheet (TDS) and safety data sheet (SDS) of the chosen model and the site rules; being water-based alone is not enough to decide.
What it means for metro
Good damping and heat resistance help lower the vibration and noise caused by running, raise car stability and passenger comfort, and also help protect electronics and mechanical structures.
What has to be weighed
Water-based damping coatings often cost more to make and are harder to apply than traditional ones; they are relatively new in development and application, and their long-term performance and durability still need to be observed. Environmental indicators follow test reports.