1、 The definition of hollow glass microbeads is a small sphere made of glass, which is hollow inside, smooth outside, and coated with a thin film on the surface. The diameter of these microspheres is generally between 10 microns and 250 microns, and their density can be controlled by controlling the thickness of the glass wall.
2、 The manufacturing process of hollow glass microspheres is generally divided into three steps. The first stage is the preparation of glass particles. The glass components are mixed and dried by spray or melted into small particles at high temperature. Next is the preparation stage of hollow glass microspheres, where the particles melt into spheres at high temperatures and form a thin film on the surface of the spheres. Finally, there is the treatment and screening stage, where qualified hollow glass microspheres are separated through special treatment and screening.
3、 The physical characteristics of hollow glass microspheres include low density, high strength, good flowability, insulation, and difficulty in absorbing water. Its density is generally 0.15g/cm ³ To 0.60g/cm ³ It has good compressive strength and wear resistance.
4、 The chemical properties of hollow glass microspheres are mainly composed of silicates, which have excellent chemical stability and acid resistance. Under some special conditions, hollow glass microspheres can also undergo chemical reactions with other chemicals.
5、 The application of hollow glass microspheres has a wide range of applications in various industries. In the construction industry, hollow glass microspheres are mainly used to improve soil properties, insulation, and reduce asphalt density; In materials industries such as coatings, paints, and plastics, it can be used to enhance product quality, reduce costs, and production costs; In industries such as healthcare and food processing, the application of hollow glass microspheres continues to expand with the development of technology.
6、 Conclusion: Hollow glass microspheres are low-density and high-strength micro spheres with excellent physical and chemical properties, and have a wide range of applications. They are an important engineering material.