What is the difference between road marking paint and ordinary paint?

There are significant differences between road marking paint and ordinary paint in terms of composition, performance, application scenarios, and construction requirements. The following is a detailed comparative analysis:

1. Composition and Formulation

Road marking paint:

Road marking paint is a special type of paint designed specifically for road markings. Its composition is carefully formulated to meet the special needs of the road environment. It mainly includes the following types:

Hot-melt paint: Composed of resin, pigments, fillers, glass beads, etc. During construction, it needs to be heated to a molten state and forms a solid marking after cooling.

Cold-applied paint: Usually solvent-based or water-based paint, containing resin, pigments, fillers, etc. It can be applied directly without heating during construction.

Two-component paint: Cures through a chemical reaction after mixing two components, and has excellent durability and anti-skid performance.

Ordinary paint:

Ordinary paint is mainly used for surface decoration and protection in fields such as architecture, furniture, and industrial equipment. Its composition varies according to different uses, mainly including:

Emulsion paint: With water as the solvent, it contains emulsion, pigments, fillers, etc., and is mainly used for interior walls.

Oil paint: With organic solvents as the medium, it contains resin, pigments, fillers, etc., and is suitable for surfaces such as metal and wood.

Powder paint: Exists in the form of solid powder, which is cured by heating after electrostatic spraying and is suitable for metal surfaces.

2. Performance Requirements

Road marking paint:

Road marking paint needs to meet strict performance requirements, mainly including:

Abrasion resistance: Road markings need to withstand repeated rolling of vehicle tires, so the paint must have excellent abrasion resistance.

Reflectivity: For the safety of driving at night, marking paints usually need to be added with glass beads or other reflective materials to improve reflective performance.

Weather resistance: Marking paints need to be exposed to the outdoors for a long time and can resist erosion from natural environments such as ultraviolet rays, rainwater, ice, and snow.

Anti-skid performance: To ensure driving safety, the surface of the marking paint needs to have a certain anti-skid performance to prevent vehicles from skidding.

Drying speed: Marking paints need to dry quickly to reduce the impact on traffic.