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Features of Glass Beads
Glass Beads are Nature-friendly Material with Excellent Features.
■Chemically Stable and Strong Material
Some of the excellent features of glass include transparency, resistance to water and chemicals, thermal stability, and hardness. Particularly, when glass is manufactured into spherical particles, it can resist impact and make extremely stable material. Because glass contains non toxic components, and is recyclable, it is expected to be applied to many areas.
■“Retroreflectivity” Returns Light Back
Glass beads have “retroreflectivity” that returns the incoming light back toward the light source. When you drive a car at night, the light from the headlights enters the glass beads embedded in the paint applied on the road surface, and then goes back to the driver effectively. Glass beads to improve the nighttime visibility are essential to transportation infrastructure development.
■Blasting to Polish and Harden Metals
By bombarding or blasting a work surface of parts such as molded metal parts with glass beads, you can deburr and give smooth finishing to metal surface. Because there are many different sizes of particles to choose from, you can obtain a processing effect you desire. Variety of size range of products provide excellent finishing surface as you desire.
■Ideal Characteristics as Filler Material
Glass beads are chemically stable and do not cause chemical reaction with other substances, so they are also ideal as a material of polymer additives. Glass beads are hard and have low thermal expansion. These characteristics of glass beads can make stronger plastic composites with less deformation.
Chemical Characteristics of Glass
Glass is chemically stable, and has excellent water and chemical resistance.
| Chemical Composition | Analysis value example (%) | |
| ITEM | GB Type | EGB Type |
|---|---|---|
| Material | Soda-lime glass | Low alkaline glass |
| SiO2 | 72.0 | 55.5 |
| Al2O3 | 2.0 | 14.0 |
| B2O3 | - | 5.7 |
| Fe2O3 | 0.1 | 0.2 |
| Na2O／K2O | 13.5 | 0.5 |
| MgO | 3.4 | 1.0 |
| CaO | 9.0 | 23.1 |
| Total | 100.0 | 100.0 |
Physical Characteristics of Glass
Glass is a transparent and hard material with excellent resistance to high temperature.
| Physical Characteristics | Standard Value | |
| ITEM | GB Type | EGB Type |
|---|---|---|
| Density | 2.5 | 2.6 |
| Refractive Index(nD) | 1.50〜1.53 | 1.53〜1.57 |
| Hardness(New Moh's scale) | 6.5 | 6.5 |
| Softening Point (℃) | 720 | 830 |
| Coeffcient of Thermal Expansion （α×10-7/℃） | 90 | 51 |
| Thermal Conductivity （kcal/mh℃） | 0.81 | 0.89 |
| Specific Heat（kcal/kg℃） | 0.28 | 0.20 |
- ▶JIS Standard Beads
- ▶High-Index Retroreflective
Glass Spheres - ▶VISIBEAD®
- Engineered Glass Materials
- ▶Glass Beads
- ▶PLASHOT®
- ▶Glass Powder
- ▶Solid Glass Spheres
- ▶Glass Microspheres
- ▶Hollow Glass Spheres
- ▶Q-CEL®
- ▶Sphericel®
- ▶Ceramic Multi Cellular
- ▶Extendospheres™
- ▶Conductive Additives
- ▶Large Glass Beads
- ▶Phosphorescent Glass Beads