Hollow Glass Microsphere (HGM), often called “hollow glass sphere”, “glass bubble” or “microballoon,” are tiny, engineered spherical powder made of thin-walled glass (soda-lime-borosilicate). They appear as a fine, free-flowing white powder, but under a microscope, they are hollow and spherical. It’s a versatile lightweight filler, which is inorganic and non-metallic used into a wide range of applications, such as sealants and adhesives, coatings, rubber, plastics, composites, artificial stone, putty, explosives and oil and gas field mining industry products.
Based on the advantages of lightweight, large volume, low thermal conductivity, high compressive strength, good fluidity and stable chemical properties, the application of Hollow Glass Microsphere will enhance the product properties and bring cost saving.
Properties of Hollow Glass Microsphere
Appearance: white powder, good fluidity
Under the Microscope: transparent, hollow, spherical
True Density: 0.12～1.60 g/cm³
Bulk Density: 0.10～0.62 g/cm³
Particle Size: 1~130 μm
Thermal Conductivity: 0.038-0.085 W/m.K
Max Compressive Strength: 30000 psi
pH: 8~9.5
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A series of enhanced performance in application
Reduce specific gravity
Reduce resin usage
Reduce the volume cost
Reduce shrinkage and warpage, maintain demensional stability
Improve production cycle time
Improve rheology
Excellent surface finishing
Improve dielectric properties
Improve thermal insulation
Improve sound insulation and reduce noise
Improve the rigidity of the material
Prevent material from cracking
Improve flame retardant performance