1.Glass Beads
2.Specific gravity:2.3-2.5G/CM3
3.Index of refraction:1.5-1.55
4.soda-lime glass. silica content exceeds 62%
There microspheres are specially made for used in road marling paints and thermoplastic to provide excellent night retro-reflectivity. Type A is used as an intermix in the manufacture of reflective thermoplastic road marking paint. Type B is used as a filler for road marking paint.
Type | Standard Diameter(um) | Sieve Size | Content Proportion |
Type A | 850 | 20 | Residue on sieve 5-20% |
425 | 40 | Residue on sieve 65-95% | |
425 | 40 | Residue under sieve 0-10% |
Standard of the Ministry of Communications GB/T 24722-2009 | Diameter range | Content | |
Type B | Diameter(um) | Sieve size | % |
600 | 30 | 0 | |
600-300 | 30-50 | 50-90 | |
300-150 | 50-80 | 5-50 | |
technical parameters
Roundness | Density | Index of Refraction(RI) | Volume with Magnetic |
>85% |
2.4-4.3g/cm³ | low1.50<RI<1.70 medium1.70< RI<1.90 high RI>1.90 |
<=0.1% |
