Reflective glass beads is the essential material for the coating of road marking, it is mainly used for road marking. The glass beads for road marking can improve the retro-reflective performance of road surface coating and increase the safety for night driving. When driving at night, the lamp shines on the marking line with glass beads in it, the ray of lamp is reflected back parallel. So the driver can look at the road clearly and drive safely at night.
The glass beads are used for road marking paints and thermoplastic road marking materials to provide excellent night retro-reflectivity .When the headlight shines on the road line ,the light is reflected back ,and then the driver can drive the car safely in night .The rate of glass beads in paint is 15%-25%.The glass beads can be used as intermix and drop-on .we can produce the beads as per the standard of JT/T446-2001 and BS 6088-1981 and other national standard
Shape | Spherical, irregular diamond |
specific gravity | 2.5g/cm3 |
Bulk Density | 1.5g/cm3 |
Moh’s hardness | 6-7 |
Rockweell hardness | 46HRC |
Refractive index | 1.5-1.7 |
Roundness | ≥80% |
Chemical Composition
SiO2 | 70-74% |
Na2O | 12-15% |
CaO | 8-10% |
MgO | 1-3.8% |
Al2O3 | 0.2-1.8% |
K2O | 0-0.5% |
Fe2O3 | 0-0.15% |
Others | 0-2% |