Uses of glass microspheres

　　Since glass microspheres were first produced, they have found widespread applications. Over the course of long-term development, glass microspheres have become indispensable in many fields. Glass microspheres are smooth, transparent, and perfectly spherical; they have relatively high hardness, with a Mohs hardness of 6 to 7; they exhibit strong chemical stability and do not readily react with other elements; they feature a high refractive index and excellent light reflectivity; and they boast a high melting point, among other remarkable properties.

　　Relying on these characteristics, glass microbeads are used in the following areas:

　　I. Applications in Reflectivity

　　1. Glass beads for road applications are primarily used in both cold-applied and thermoplastic road marking paints. They come in two types: pre-mixed and surface-spread. Pre-mixed glass beads can be incorporated into thermoplastic road marking paints during the manufacturing process, ensuring long-term reflectivity of the road markings throughout their service life. The other type is spread onto the surface of the road markings during construction, providing immediate reflective effects. Glass beads coated with a surface treatment, when used in road marking applications, significantly enhance the adhesion between the glass beads and the thermoplastic markings, increase the refractive index of the road markings, and offer additional benefits such as self-cleaning, anti-fouling, and moisture resistance. Road-use glass beads are employed to improve the retroreflective performance of pavement coatings, thereby enhancing driver safety during nighttime driving.

　　2. Used for billboards, traffic signs, reflective signs, and the like, glass microbeads are adhered and bonded to the surface of these signs. At night, when light shines on the sign’s surface, the microbeads reflect and refract the light, alerting pedestrians to pay attention to their safety.

　　3. High-refractive-index glass beads are essential materials for products including reflective fabrics, reflective coatings, chemical coatings, advertising and promotional materials, apparel fabrics, reflective films, reflective textiles, reflective signage and markings, airport runways, footwear and headwear, schoolbags, water, land, and air rescue equipment, and clothing worn by personnel participating in nighttime activities.