Formula analysis of hot melt road coatings, testing of hot melt road coatings

Hot melt paint is a material used on roads to make markings such as lanes. When the paint is heated to 180 degrees and becomes liquid, it is applied to the road using specialized equipment. Because it needs to be melted with fire, it is called hot melt. The characteristic of hot melt coating is that it has quick drying and the drying time is generally 1-3 minutes. Synthetic resin combines physical pigments, coloring pigments, reflective materials, etc. with road surfaces, and has the characteristics of strong adhesion, stable performance, long-lasting brightness, chromaticity, and reflectivity. In addition, it also has good wear resistance and skid resistance. Below is an introduction to the knowledge of hot melt coating testing.

1、 Analysis of Hot Melt Coating Formula

The finished product of hot melt coating is in powder form, and the main raw materials of hot melt coating include titanium dioxide, petroleum resin, quartz sand, reflective glass beads, and so on. Hot melt coatings are in powder form at room temperature and contain no volatile solvents in their composition.

2、 Hot melt coating testing

1. Hot melt coating testing items:

Paint film impact resistance, paint film impact resistance, paint film thickness, paint film adhesion, pencil hardness, paint film wear resistance, linear wear, sanding wear, sagging, ash content, pH value, flash point, fineness, density, volumetric solid content, volatile organic compound content, bonding strength, consumption, leveling, covering power, usage amount, adhesion, viscosity, drying time, chemical properties, physical properties, mechanical properties, etc.

2. Hot melt coating testing range:

Road marking coatings, hot-melt marking coatings, hot-melt reflective coatings, etc.

3. Testing standards for hot melt coatings:

HG/T 4104-2019 Water based Fluororesin Coatings

GB/T 30794-2014 Determination of Polyvinylidene Fluoride (PVDF) Content in Hot Melt Fluororesin Coatings (Dry Film) – Melting Temperature Drop Method

HG/T 3793-2019 Hot Melt Fluororesin (PVDF) Coating

Our company is a professional manufacturer of road hot-melt coatings, road retroreflective measuring instruments, and road marking machines. If you are interested, please feel free to communicate with me via email at any time export@toproadtraffic.com