High-Performance Hollow Glass Microspheres

Hollow glass microspheres are a new material with multiple excellent properties, including low specific gravity, low thermal conductivity, high strength, electrical insulation, and corrosion resistance. Wholesale inquiries are welcome.

What is a Hollow Glass Microsphere?

ZMS Advanced Material supplies hollow glass microspheres in different density grades, which directly determine their lightweight properties, buoyancy, compressive strength, and application suitability. Low-density grades focus on ultra-lightweight and thermal insulation, medium-density grades balance strength and lightweight, while high-density grades offer higher compressive strength for demanding industrial applications. Users can choose according to their needs.

By selecting the appropriate density grade, users can achieve optimal performance in terms of lightweighting, mechanical strength, thermal insulation, dielectric properties, and cost control in fields such as coatings, plastics, rubber, oil and gas, marine engineering, and 5G communication materials.

Select According to Hollow Glass Microspheres Density

Hollow glass microspheres 0.12–0.20 gcm³

ZMS HGMS 0.12–0.20 g/cm³

It is widely used in coatings, resins, composite materials, oilfield drilling fluids, building material putty and other fields, with excellent heat insulation, low oil absorption, high compressive strength, thermal insulation performance and dimensional stability.

Hollow glass microspheres 0.55–0.70 gcm³

ZMS HGMS 0.55–0.70 g/cm³

It is widely used in coatings, resins, composite materials, oilfield drilling fluids, building material putty and other fields, with excellent heat insulation, low oil absorption, high compressive strength, thermal insulation performance and dimensional stability.

Hollow glass microspheres 0.40–0.55 gcm³ Supply

ZMS HGMS 0.40–0.55 g/cm³

It is commonly used in coatings, resins, adhesives, putties, building materials, and composite materials to reduce system density, increase filler content, and improve flowability. It also offers excellent thermal insulation, low oil absorption, high compressive strength, and dimensional stability.

Hollow glass microspheres 0.20–0.40 gcm³

ZMS HGMS 0.20–0.40 g/cm³

The ultralight hollow structure is suitable for coatings, resins, putties, oilfield drilling fluids, insulation materials, and lightweight composite material systems. It can significantly reduce material weight, lower density, and improve construction and processing performance. It features low thermal conductivity, low oil absorption, good dispersibility, and high compressive strength.

Hollow glass microspheres 7.0-9.0 gcm³

ZMS HGMS 7.0-9.0 g/cm³

Non-magnetic stainless steel microspheres are commonly used in industrial applications such as precision grinding, polishing media, shot peening, fluidized beds, precision measurement, and damping filling. Their non-magnetic nature, extremely high hardness, corrosion resistance, and dimensional stability enable them to maintain stable performance and a long service life.

Hollow glass microspheres 9.0-13.0 gcm³

ZMS HGMS 9.0-13.0 g/cm³

Tungsten carbide ceramic and metal alloy balls are widely used in demanding industrial applications such as precision grinding, polishing media, shot peening, high wear-resistant filling, damping and vibration absorption, and gravity grading. They maintain stable shape and strength even under high load, high impact, and high wear conditions, thus improving efficiency and lifespan.

Hollow glass microspheres 5.0-7.0 gcm³

ZMS HGMS 5.0-7.0 g/cm³

Yttrium-stabilized zirconia solid and hollow microspheres are widely used in high-strength abrasive media, surface polishing, wear-resistant fillers, thermal spray materials, and high-temperature structural ceramics applications. They possess high hardness, high wear resistance, and excellent thermal stability and chemical inertness.

Hollow glass microspheres 3.5-4.9gcm³

ZMS HGMS 3.5-4.9 g/cm³

Gold-plated barium titanate glass microspheres are mainly used in conductive pastes, microelectronic packaging, electromagnetic shielding, and high-performance sensor materials. The gold plating provides excellent conductivity and oxidation resistance, while the barium titanate matrix imparts dielectric properties, making them a high-end functional filler in the field of precision electronics.

Hollow glass microspheres 1.6-1.9 gcm³

ZMS HGMS 1.6-1.9 g/cm³

White polymer microspheres are commonly used in separation media, fluidized bed experiments, visual tracing, filter materials, and lightweight packing systems. Their uniform spherical shape, lightweight nature, and resistance to chemical corrosion give them excellent stability and repeatability in fluid simulation, educational demonstrations, and industrial processes.

Hollow glass microspheres 1.01-1.1 gcm³

ZMS HGMS 1.01-1.1 g/cm³

Fluorescent green polyethylene microspheres are used for visual fluid experiments, particle tracing, filtration testing, particle calibration, and environmental monitoring. Their bright fluorescence, high chemical resistance, and good buoyancy enable them to exhibit extremely high recognition and stability in optical tracking and fluid dynamics research.

Hollow glass microspheres 0.96-0.99 gcm³

ZMS HGMS 0.96-0.99 g/cm³

Transparent polyethylene granules are used in filter media, fluidized beds, additive carriers, visual tracers, and lightweight filler materials. Their lightweight, transparency, abrasion resistance, and high chemical stability enable reliable flowability and visualization in experimental systems and industrial processes.

Hollow glass microspheres 0.21-0.26 gcm³

ZMS HGMS 0.21-0.26 g/cm³

Titanium dioxide-coated photocatalytic hollow glass microspheres are used for air purification, water treatment, photocatalytic degradation, and high-performance energy saving. Their hollow structure results in ultra-low density and high specific surface area, while the TiO₂ coating provides strong photocatalytic activity, enabling them to remove contaminants and be repeatedly recycled.

Glass Spheres Microspheres
Material TypesCore MaterialFeaturesParticle SizeApplication
Glass Spheres and MicrospheresInorganic glasses such as borosilicate glass and soda-lime glassLow specific gravity (0.12-0.70 g/cm³), low thermal conductivity (0.038-0.060 W/m·K), high withstand voltage, electrical insulation, corrosion resistance, transparent hollow structure.5-100μmLightweight transportation, 5G communication, building insulation, marine buoyancy materials, coatings, adhesives, emulsion explosives
Polymer Spheres Microspheres
Material TypesCore MaterialFeaturesParticle SizeApplication
Polymer Spheres MicrospheresPolystyrene (PS), polyacrylate (PA), polyurethane (PU), polyamide (PA) and other polymer materialsLightweight, highly elastic, easily functionalized surface, chemically stable, and customizable particle size distribution.1μm-1mmCosmetic abrasives or thickeners, pharmaceutical carriers, coating matting agents, ink pigment carriers, and bioassay microspheres.
Ceramic Spheres Microspheres
Material TypesCore MaterialFeaturesParticle SizeApplication
Ceramic Spheres MicrospheresCeramic materials such as alumina (AlO), zirconium oxide (ZrO), silicon dioxide (SiO), and silicon carbide (SiC)Ultra-high hardness, high temperature resistance (up to 1000℃ or higher), wear resistance, chemical corrosion resistance, and high strength.10μm-500μmWear-resistant coatings for mechanical parts, grinding media, high-temperature insulation materials, high-temperature resistant components for aero-engines, and thermally conductive fillers for electronic packaging.
Metal Spheres Microspheres
Material TypesCore MaterialFeaturesParticle SizeApplication
Metal Spheres MicrospheresPure metals or alloys such as steel, aluminum, copper, titanium, and nickel.High thermal conductivity, high electrical conductivity, high density, good ductility and electromagnetic shielding50μm-5mmMetal powder metallurgy raw materials, conductive pastes (electronic component connections), electromagnetic shielding materials, shock-absorbing and cushioning materials (mechanical engineering), nail gun pellets
Metal-Coated Microspheres
Material TypesCore MaterialFeaturesParticle SizeApplication
Metal-Coated The core is made of glass or polymer microspheres, with the surface coated with metal layers such as gold, silver, copper, and nickel.It combines the lightweight or high elasticity of the core material with the electrical conductivity, thermal conductivity, or electromagnetic shielding properties of metal.1μm-100μm5G antenna substrate (low dielectric + conductive), electromagnetic shielding coating, biosensor (metallic layer with biocompatibility), flexible electronically conductive filler
Functionalized Microspheres
Material TypesCore MaterialFeaturesParticle SizeApplication
Functionalized MicrospheresSurfactants, such as sodium dodecyl sulfate and polyoxyethylene ether, are used as dispersants or modifiers, and the substrate can be glass, polymers, etc.It exhibits strong surface activity, easy dispersion, adjustable interfacial tension, and combines substrate properties with surface functionality.0.1μm-50μmEmulsion explosive stabilizers, coating or adhesive dispersants, cosmetic emulsifiers, biopharmaceutical cell separation media, and oil drilling fluid emulsifiers.

What are Hollow Glass Microspheres Used For?

Solid Buoyancy Materials

Oil pipeline buoyancy material

  • Solid buoyancy materials for deep-sea submersibles;
  • Buoyancy materials and risers for offshore oil drilling platforms and seabed mining equipment;
  • Buoyancy materials for oil pipelines; Marine optical cable sheathing materials.

Advantages: The performance of buoyancy materials depends on the strength, specific gravity, and particle size distribution of hollow microspheres, thereby achieving maximum filling and meeting the requirements of all sea state applications. Resistant to seawater corrosion, high strength, and high buoyancy, providing unpowered buoyancy for deep-sea submersibles and offshore equipment.

◼ Unmanned Aerial Vehicle (UAV) Airframe Materials
Reduce airframe weight to free up more mass space for increased fuel and payload, extending flight range and endurance.

Sensitizers and Explosive Enhancers
Adding 2% to 6% hollow glass microspheres to the matrix of emulsion explosives can improve their explosive sensitivity and energy output.

◼ Plastic Interior Components for Aircraft, High-Speed ​​Rail, and Automobiles

High-speed rail plastic interior parts

In recent years, the annual growth rate of engineering plastics usage worldwide has exceeded 20%. Lightweighting and energy conservation/emission reduction have become global environmental development strategies.

Currently, several lightweight modified plastics have been successfully developed, including PA6 for bus seats, PA66 for engine hoods, PP for automotive door panels, and PP for dashboards.

  • For example, the average weight of plastic parts in automobiles is about 150 kg. If hollow glass microsphere composite materials are used, the weight of plastic parts can be reduced by about 20%, saving 0.18 liters of fuel per 100 kilometers per vehicle, a fuel saving rate exceeding 2%.
  • For example, aircraft cabins use a large number of plastic parts; using hollow glass microsphere composite materials for seat armrests alone can save 1000 liters of fuel per aircraft per year.

◼ Automotive Engine Cover Plate
If PA6 GF30 GB7 hollow glass microsphere material is used instead of ordinary PA6-MG30 plastic, the engine cover plate can be reduced in weight by about 11%, and the dimensional stability of plastic parts is improved, shrinkage and warping are reduced, NVH performance is improved, noise is reduced, injection molding cooling time is shortened by about 10%, efficiency is improved, and thus costs are reduced.

◼ Center Armrest/Center Console
If PP GF5 GB5 hollow micro-material is used instead of PP T20 ordinary material, the center armrest or center console is expected to reduce weight by about 14%, and improve the dimensional stability of plastic parts, reduce shrinkage and warping, improve NVH performance, reduce noise, shorten injection molding cooling time by about 10%, improve efficiency, and thus reduce costs.

◼ Low-Dielectric Engineering Plastics

5G base station

• In 5G communications, millimeter waves are mostly used. These waves have short wavelengths, poor diffraction capabilities, and significant attenuation during propagation, greatly reducing the dielectric constant of the materials.

• The unique hollow, thin-walled structure of hollow microspheres effectively improves the dielectric properties of 5G materials, increasing signal transmission speed and reducing signal delay and loss.

• Commonly used as housings and cladding for 5G base stations and antenna systems, and as protective materials for smart terminals.

◼ Copper Clad Laminate (CCL) for Printed Circuit Boards
CCL material is composed of resin, glass fiber, hollow glass microspheres and copper foil. Hollow glass microspheres are a key basic material for low dielectric PCBs.

Adding hollow glass microspheres to adhesives can improve their flowability, reduce density, effectively control adhesive layer thickness, reduce shrinkage and cracking, enhance aging resistance, and impart properties such as heat insulation, sound insulation, electrical insulation, and flame retardancy.

adhesives

  • Application Industries: Military, aerospace, high-speed rail, automotive, electronics, construction, environmental protection, packaging, medical and health, textiles, etc.
  • Application Types: Silicone-based, epoxy resin-based, acrylic-based, polyurethane-based, synthetic rubber-based, etc.

◼ Building Energy-Saving Reflective Thermal Insulation Coatings

Coatings industry


In some countries or regions with hot summers and mild winters, reducing heat absorption by buildings through reflective thermal insulation coatings on exterior walls has become one of the mainstream applications.

◼ Building Energy-Saving Insulation Materials

  • Hollow microspheres are inorganic materials whose hollow structure endows them with thermal insulation properties, making them excellent external wall insulation materials.
  • High-strength fireproof, thermally insulated, and decorative integrated panels made of glass microspheres and aerogel have a thermal conductivity of up to 0.03 W/(m·K).
  • Glass microsphere + aerogel composite materials can be directly applied to exterior and interior walls via spraying; they offer short construction periods, fire resistance, and excellent overall thermal insulation performance.

◼ Industrial Coatings

Industrial Insulation: Thermal insulation and waterproofing for oil pipelines, oil storage tanks, communication base stations, large grain silos, etc.

Industrial Corrosion Protection: Thermal insulation and corrosion protection for ships, industrial tanks, and pipelines.

 

◼ Drilling Fluid and Low-Gravity Cement Slurry

  • Adjusting the specific gravity of the drilling fluid to increase the fluidity of the cement slurry
  • Preparing low-gravity cement slurry, precisely controlling its specific gravity, balancing formation pressure, and ensuring cementing effectiveness and safety
  • Ensuring continuous operation, reducing operation cycles, and improving work efficiency

◼ Tire Insulation Layer

Tires, shoe materials


Hollow glass microspheres coated into the tire cord fabric interlayer serve as an insulation layer, effectively isolating the tire’s internal and external heat. This prevents internal tire pressure from increasing due to temperature rise, thus preventing explosions; it has been used in forest fire fighting.

◼ Lightweight Footwear Materials
The addition of rubber to hollow glass microspheres significantly reduces the specific gravity of footwear materials.

◼ Industrial Rubber
Fillers for the rubber layers of cable and optical fiber sheaths, and fillers for various rubber sealing rings.

◼ Elastomer Materials for Home Furnishings
Fillers for latex pillows, latex mattresses, sofas, and other home furnishings and bedding, enhancing the material’s texture, improving memory properties, and increasing resilience.

◼ Sports Equipment: Climbing blocks, bowling balls, golf balls, etc.

Sports equipment

◼ Resin Abrasive Wheel Pore-forming Agent

◼ Wood Substitutes

◼ Artificial Stone

How to Choose the Right Types?

Simplest Recommendation:

For coatings → Low-density grade recommended
For rubber and plastics → Medium-density grade recommended
For oil and gas and marine applications → High-strength grade recommended

If you simply need to purchase hollow glass microspheres but are unsure of their structural parameters or have concerns about certain data, we recommend contacting us immediately. Just tell us what you need the hollow glass microspheres for, and our professional sales staff will provide you with detailed material data to ensure you select the most suitable product.

Of course, we also welcome you to contact us directly with the specific product model for a quote. We will provide you with suitable wholesale prices and shipping solutions.

Key Benefits

Packing & Supply

Quality Control & Certification

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    ZMS Material Services & Logistics

    ZMS Material Services & Logistics

    Professional Technical Support
    ZMS’s experienced materials engineers provide guidance on compound selection, cable insulation design, and custom formulations for various grades. We ensure that every batch meets your electrical, mechanical, and fire safety requirements.

    Quality Assurance & After-Sales Service
    Each batch of material pellets undergoes rigorous quality control, including density, dielectric strength, and flame retardancy testing. Our after-sales team is available to provide consultation, troubleshooting, and replacement services if necessary.

    Customized Packaging Solutions
    ZMS Material compounds are supplied in pellet or granular form and are typically packaged in moisture-proof polyethylene bags, kraft paper drums, or plastic drums. We can also provide custom packaging with custom graphics to protect the integrity of the material during transportation and storage.

    Flexible Shipping & Delivery
    We work with reliable logistics partners to offer global shipping services, including container, pallet, or bulk shipping. Dedicated personnel and meticulously planned shipping procedures prevent moisture, heat, or mechanical damage, ensuring the compound arrives in optimal condition.

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