High Microhardness Glass Beads with 2.4-2.6g/cm3 Density for Environmental Friendly Road Markings
Glass beads serve as high-performance, organic materials that reduce surface adsorption of dust in the air. Due to the inclusion of specific coupling agents, these beads enhance cohesive force with coatings, preventing tiny glass beads from sinking into the coating. Their flotation function allows them to remain on the surface, significantly increasing utilization rates by over 30%. Reflective glass beads have become an essential material in road safety products.
We offer glass beads with various refractive indices including 1.53, 1.72, and 1.93. Our products comply with multiple national standards and can be customized according to customer-specified size distributions.
- Chinese Standard: GB/T 24722-2009 No.1, 2, 3
- Korean Standard: KSL 2521 No.1 and 2
- British Standard: BS6088 Class A and B
- American Standard: AASHTO M247 type 1 and type 2
- European Standard: EN1423 and EN1424
- Turkish Standard: TS EN1423
- New Zealand Standard: NZS2009:2002
- Taiwan Standard: CNS
- Japanese Standard: JIS R3301
- Australian Standard: A, B, C, D
| Property | Specification |
|---|---|
| Chemical Composition | SiO₂ >72%, CaO >8%, Na₂O <14%, MgO >2.5%, Al₂O₃ 0.5-2.0%, Fe₂O₃ 0.15%, Others 2.0% |
| Refractive Index | Nd ≥ 1.5 |
| Density | 2.4-2.6 g/cm³ |
| Size Distribution | Oversize ≤5%, Undersize ≤10% |
| Wire Diameter | 0.03-0.4 mm |
| Durability | 3-5% |
| Hardness | 6-7 MOHS; 46HRC |
| Microhardness | ≥650 kg/cm³ |
| Circularity | Round rate ≥85% |
| Appearance | Colorless, glass transparent without impurities, round and smooth |
| Applications | Grinding, Road marking paint, Sand blasting |
| Lead Content | No lead content, meets American 16CFR 1303 standard |
| Harmful Substances | Lower than American 16CFR 1500 standard |
| Flammability Test | Not easily combustible, meets American 16CFR 1500.44 standard |
| Soluble Heavy Metals | Content ratio by solid weight not exceeding ASTM F963 values |
| Type | Mesh | Max Microns (μm) | Min Microns (μm) |
|---|---|---|---|
| 30# | 20-40 | 850 | 425 |
| 40# | 30-40 | 600 | 425 |
| 60# | 40-60 | 425 | 300 |
| 80# | 60-100 | 300 | 150 |
| 100# | 70-140 | 212 | 106 |
| 120# | 100-140 | 150 | 106 |
| 150# | 100-200 | 150 | 75 |
| 180# | 140-200 | 106 | 75 |
| 220# | 140-270 | 106 | 53 |
| 280# | 200-325 | 75 | 45 |
| 320# | >325 | 45 | 25 |
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