What Is the Prospect of Eco-friendly Water-based Industrial Paint

Coatings form films of certain strength and thickness on surfaces; the family includes architectural, industrial, oil-based and water-based, further split by field into automotive, bridge, marine, wind-power, steel-structure coatings, etc. Water-based industrial paint is distinguished by using water as dispersant/solvent (water-dilutable, water-soluble, water-dispersible) and is used in commercial vehicles, agricultural equipment, machinery, ships, containers, steel structures, bridges, refineries and wind power. Characteristics: strong surface tension - water's tension (~70 mN/m) is far above solvent's (~30%), a defining trait; high vaporization temperature - water (~70% of the formula) evaporates slower, so it dries slower and atomizes without rapid volatilization; certain thixotropy - viscosity drops under shear (e.g., stirring). Advantages vs solvent: per 2014 data, world industrial coating output was 15 million t with solvent-based at 75%; replacing 50% with water-based would cut VOC by 2.4 million t/year and save 15 billion RMB, plus water-based removes fire/explosion risk in transport, application and production.