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Coating knowledge: performance characteristics of road marking paint

Jun 04, 2020

  Road marking is one of the most basic and effective components in traffic management facilities, and is one of the ways to effectively guide the standardized driving of vehicles. Road marking

     General road marking paint should have the following characteristics: the paint should have good adhesion to asphalt pavement or cement pavement, and it is not easy to peel off during use; the marking paint should have good weather resistance and wear resistance, and the color changes during use Small, clear marking, not easy to crack, not easy to wear; can maintain good reflective properties, the reflective effect will not be significantly reduced in a long time; should have good construction performance, fast drying, smooth surface, bonding to glass beads Strong; easy to control the thickness of the marking line during the construction process to maintain the uniformity of the thickness of the marking line.

   Generally, road marking paints can be divided into solvent-based and hot-melt types. Among them, solvent-based road marking paints are the most commonly used. However, a large amount of solvent is released during the use of such paints, which seriously pollutes the environment. Specifies that the content of organic solvents (especially solvents that easily generate photochemical smog) in solvent-based coatings should be less than 17% (volume). This regulation undoubtedly greatly limits the use of solvent-based road marking paints. Since then, other advanced industrial countries have followed suit, successively promulgating environmental protection regulations, stipulating the limits of organic volatile compounds (VOC), and the development of solvent-based road marking paint has since gone downhill. Nowadays, with the improvement of living standards, people's requirements for living environment are getting higher and higher, and solvent-based road marking paint can no longer meet the needs of contemporary society.