Hollow Glass Microspheres (HGMs) are lightweight hollow spherical fillers made from soda-lime borosilicate glass. Featuring low density, high compressive strength, low thermal conductivity and excellent chemical resistance, they are widely used in coatings, paints, adhesives, sealants, composites, SMC/BMC materials, syntactic foam, oilfield cementing and buoyancy applications. Airgeltech provides high-quality low density hollow glass microspheres for lightweight, thermal insulation and performance enhancement solutions.
Hollow Glass Microspheres
Hollow Glass Microspheres (HGMs), also known as Glass Bubbles or Hollow Glass Bubbles, are lightweight hollow particles manufactured from soda-lime borosilicate glass. Combining low density, high compressive strength, low thermal conductivity, chemical resistance, and excellent flowability, they are widely used as lightweight functional fillers in coatings, composites, plastics, adhesives, sealants, syntactic foams, and oilfield cementing systems.
By reducing weight while maintaining mechanical performance, hollow glass microspheres help manufacturers improve thermal insulation, dimensional stability, processing efficiency, and overall product performance.
Shanghai Airgeltech supplies a comprehensive range of hollow glass microspheres, from ultra-low-density grades to high-strength grades, supporting a wide variety of industrial applications worldwide.
Low Density Hollow Glass Microspheres
Designed for thermal insulation coatings, lightweight adhesives, putties, buoyancy materials, and syntactic foams.
Key Advantage: Maximum weight reduction with excellent thermal insulation performance.
High Strength Hollow Glass Microspheres
Designed for engineering plastics, carbon fiber composites, FRP products, SMC/BMC compounds, and demanding processing environments.
Key Advantage: Outstanding compressive strength and processing durability.
Medium Density Hollow Glass Microspheres
Designed for specialty formulations and customized composite systems requiring balanced performance.
Key Advantage: Optimized balance between density and strength.
Solid Glass Microspheres
Designed for engineering plastics, surface treatment applications, and industrial fillers.
Key Advantage: Excellent wear resistance, dimensional stability, and processing performance.
Compared with traditional fillers such as calcium carbonate, talc, and silica, hollow glass microspheres offer a unique combination of lightweight performance, thermal insulation, and mechanical strength.
Their hollow spherical structure helps reduce product density, lower resin consumption, improve processing efficiency, and enhance dimensional stability while maintaining the functional performance of finished products. As a result, manufacturers can achieve lightweighting, cost optimization, and performance enhancement simultaneously.
Hollow Glass Microspheres are lightweight hollow particles used as functional fillers to reduce weight and improve performance in coatings, plastics, composites, adhesives, sealants, and cementing systems.
Glass Bubbles and Hollow Glass Microspheres are commonly used interchangeably to describe lightweight hollow glass particles with similar structures and functional properties.
Their hollow structure replaces heavier mineral fillers, significantly lowering the overall density of formulated products while maintaining mechanical performance.
The optimal grade depends on application requirements, target density, compressive strength, particle size, and processing conditions. Airgeltech offers low-density, medium-density, high-strength, and specialty grades for a wide range of industrial applications.
Need help selecting the right hollow glass microsphere grade for your application?
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