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Glass micro beads
Reflective glass beads (retroflective glass beads) are made of glass sand, after melting temperature the formation of a tiny glass beads, was obersved under the micronscope spherical, colourless, transparent, refrative indes of 1.5-1.64 between the diameter is generally between 75 microns to 1400 microns. Currently in the domestic production of major road relective glass beads craft flame floadting method.
Relective glass beads for road, mainly used in normal temperature, hot melt road marking paint, a method for premixed material can ensure marking period in the life of the long term reflective;one kind of construction in the marking surface speading, can play an instant reflection effect.
Appearance: colourless transparent sphere, rounded and smooth, no obvious bubbles or impurities.
Circularity: roundness rate:>80%
Density: 2.4-2.6g/cm3
Refractive index: Nd>1.5
Composition: soda-lime glass composition
SiO2:>70%
ITEM | Glass beads particle size/um | Quality Percent/ % |
NO1 | >850 | 0 |
600-850 | 15-30 | |
300-600 | 30-75 | |
106-300 | 10-40 | |
<106 | 0-5 | |
NO2 | >600 | 0 |
300-600 | 50-90 | |
150-300 | 5-50 | |
<150 | 0-5 | |
NO3 | >212 | 0 |
<90 | 0-4 | |
NO4 | >1400 | 0 |
<600 | 0-5 | |
NOTE: NO1 Drop on glass beads mainly used in hot-melting, two-component andwater borne road marking paint; NO2 Premix glass beads mainly used in hot-melting, two-component and water borne road marking paint; NO3 Drop on glass beads mainly used in solvent type road marking paint; NO4 Rain-night glass beads, could be used with non rain-night glass beads together. | ||
