Classification of Reflective Glass Beads
【Summary Description】 Currently, the road marking paints used in our country are divided into three types: thermoplastic, water-based, and cold solvent-based. Traffic safety management departments use road markings to enhance traffic safety management, reduce accidents, and beautify urban roads, while eye-catching road markings depend on high-performance marking paints. With the modern construction's emphasis on environmental protection and the high demands for wear resistance, slip resistance, weather resistance, and durability of markings, low-cost thermoplastic marking paints have become the preferred choice for road marking paints in our country.
Classification of Reflective Glass Beads
- Divided by refractive index into high refractive index (1.7), medium refractive index (1.6), and low refractive index (1.5).
- Divided by roundness into: high roundness high brightness (≥95%), high roundness (≥90%), and ordinary type (≥85%).
- Common models and specifications, particle sizes, from small to large are American Standard III, American Standard II, American Standard I, high roundness high brightness, high brightness, and ordinary beads (Bole), ordinary beads (Caiweile), national standard beads, and internal mixed beads.
- Divided by applications: surface-sprinkled glass beads and internal mixed glass beads. The quality, roundness, refractive index, and model particle size of surface-sprinkled glass beads are directly related to the initial retroreflective coefficient. The content of internal mixed glass beads is unrelated to the initial retroreflective coefficient; internal mixed beads are only related to the retroreflective coefficient after line wear.
- The initial retroreflective coefficient of Bole ordinary beads is higher than that of other models, and high brightness beads are not recommended for standalone use due to their large particle size.
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