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The client of Zhong’an Online and Zhong’an News has opened up the territory of China. The Yangtze River Delta in the east is the region with the most active economic development, the highest degree of openness and the strongest innovation ability in China. Since the regional integration of the Yangtze River Delta has become a national strategy, Anhui has accumulated the internal strength of innovation in this hot land, unleashed the strong momentum of industry, and strove to stir up a surging wave of development in the scientific and technological innovation of the Yangtze River Delta integration.
Mechanism: “Take the lead” to overcome technical problems
Innovation is independent of origin, and heroes are independent of origin.
In 2021, our province will explore the mechanism of “unveiling the title and taking the lead” for the first time, spread hero posts at home and abroad, and sincerely invite talents from all walks of life to come to Anhui to take the lead and tackle the technical problem of “sticking the neck”.
“Let whoever can do it” is an important principle in the mechanism of “unveiling the list and taking the lead”. By selecting leaders and vanguards, focusing on the key areas of Anhui Province, we will work together to break through the key common technical bottlenecks, strengthen a number of advantageous enterprises, cultivate a number of advantageous products, and improve the modernization level of the industrial chain.
“We organized and implemented 9 provincial major projects in the way of ‘unveiling the list and taking the lead’, including 3 cooperation projects between our province and the Yangtze River Delta.” According to the relevant person in charge of the Planning Office of the Provincial Science and Technology Department, through the “unveiling and leading” mechanism, the barriers between “technology” and “market” can be broken through, which is more conducive to using sufficient resources, selecting the best among the best, improving the transformation efficiency of scientific research achievements, and stimulating the innovation vitality of the Yangtze River Delta region.
On the road of innovation,  Sinosteel Maanshan Institute of Mining Research, together with Hehai University and China University of Science and Technology, achieved seamless connection between technology “supply and demand”, became a solid partner, undertook the project of “Research and Development of Key Technologies for High Softening Point Hollow Glass Beads for Spacecraft Thermal Protection System”, made efforts to improve the key preparation technologies for industrialization of high-performance hollow glass beads, and realized the localization of high softening point hollow glass beads for spacecraft thermal protection system, Go to the “sea of stars” of scientific and technological innovation.

[Source: China Security Online

Hollow Glass Microspheres H46

Hollow glass microspheres H46 is a very small particles with a higher ball—type rate. Its “ball—bearing” effect can increase the fluidity and reduce the viscosity and internal stress of the resin mixture. As a result, the composite materials produce less heat in dynamic processing, and avoiding the inadequate lubrication and the partial thermal decomposition. On the process of injection molding , they are more easily squeezed out, which not only reduce the product defect, but also improve the production efficiency.

How do you make glass microspheres?
1. Glass powder method
The glass powder method uses pre-prepared glass powder containing gases such as SO3 to pass through the flame at the temperature of 1100-1500℃. At this time, SO3 and other gases dissolved in the glass powder overflow from the inside of the glass due to the decrease in solubility and the change in the atmosphere of the kiln. At the same time, the glass powder becomes spherical under high temperature due to the surface tension. The spillage gas is sealed in the spherical particles to form hollow glass beads.
2. Spray granulation method
Spray granulation method is made in advance with special auxiliary reagent (boric acid, urea, ammonium pentaborate) aqueous solution of sodium silicate, and then through the nozzle to the solution injection into the spray dryer, is expected to drop after drying to get a certain particle size of powder particles, the final will be powder particle heating foam-forming hollow glass beads.
3. The droplet method
The liquid drop method adopts the same raw materials as the spray granulation method. The raw materials are 500 copies of sodium silicate (M (SiO2): M (Na2O) =2), and the same amount of 10% ammonium perborate aqueous solution is added. After mixing evenly, the hollow glass beads are sprayed into the spray drying tower.
4. Dry gel method
The alkyl salt was added to dilute hydrochloric acid and decompose with water. After gelation, the gel was dried in two stages at 60℃ and 150℃ and then crushed by a ball mill. After grading, the dried gel powder was obtained, which was foamed in a vertical electric furnace at 1280℃ to prepare hollow glass microspheres.

Applications of Hollow Glass Sphere :
Hollow glass microspheres are widely used in glass fiber reinforced plastic products, composite foam plastic, artificial marble, compound wood, sound insulation heat preservation material, atomic ash, deep-sea buoyancy, bowling, low-density cement, sealing material, lightweight, resin handicraft, the mural wall hanging frame, wall plate sandwich layer structure of lightweight packaging materials, electronic industry, absorbing material, lightweight concrete, such as emulsion explosive.
Hollow glass microspheres also provide a conductive coating. Conductive coatings of optimized thickness provide spherical particles with excellent conductivity and shielding properties while maintaining the weight savings associated with hollow, low-density materials. These conductive microbubbles are suitable for military applications, biotechnology, medical devices, electronics and other special industries.
Hollow glass beads have obvious weight reduction and sound insulation and heat preservation effect so that the products have good cracking resistance and reprocessing performance, is widely used in engineering plastics, insulation materials, rubber, buoyancy material, FRP, artificial marble, man-made agate, generation of composite materials such as wood, and the oil industry, aerospace, communications, 5 g new high-speed trains, cars, ships, in areas such as thermal insulation coatings, adhesives, vigorously promote the development of science and technology.


Hollow glass microspheres, sometimes termed microballoons or glass bubbles, have diameters ranging from 10 to 300 micrometers. Hollow spheres are used as lightweight fillers in composite materials such as syntactic foam and lightweight concrete. The hollow glass bead is a kind of specially processed glass bead, which is mainly characterized by smaller density and poorer thermal conductivity than glass bead. It is a new kind of micron-grade light material developed in the 1950s and 1960s. Its main component is borosilicate, with a general particle size of 10~250μm and a wall thickness of 1~2μm. Hollow glass beads are characterized by high compressive strength, high melting point, high resistivity, small thermal conductivity and thermal shrinkage coefficient, etc., and they are known as the “space-age material” in the 21st century.
Hollow glass microspheres, also known as bubbles, microbubbles, or micro balloons, are usually formulated from borosilicate – sodium salt glass mixtures and offer the advantages of low density, high heat and chemical resistance. The walls of glass microspheres are rigid and are usually about 10% thick of the diameter of the spheres. At present, spherical particles have a wide range of densities, from as low as 0.06g/ C3 to as high as 0.80g/ C3, with particle sizes ranging from 5um to 180um. The compressive strength of the hollow sphere is determined by the wall thickness of the hollow sphere and, as expected, the greater the density of the sphere, the higher the compressive strength.The lightweight hollow glass sphere is chemically stable, non-flammable, non-porous, excellent water resistance.

Product Performance of Hollow Glass Sphere:
Hollow glass microspheres are micron-level hollow glass microspheres with a smooth surface. The main chemical component is borosilicate glass, and it is a hollow transparent sphere under the electron microscope. Hollow glass beads have low density, high strength, high temperature resistance, acid and alkali resistance, low thermal conductivity, electrical insulation and other properties. They have good fluidity and chemical stability, and they are multi-functional frontier new materials across fields.


hollow glass microspheres can be used in paints and coatings, sealants and adhesives, rubber, plastic, FRP, artificial stone, putty and other products as filler and weight-reducing agent. The glass bubbles can also be used to produce high-strength, low-density cement slurry and low-density drilling fluidity in oil and gas extraction industry. more and more industries are trying to test the hollow glass spheres as additives to improve the products’ properties.

        1. a. lightweight cement, low-density oil well cementing slurry & low-density drilling fluids additive.
        1. b. low-density FRP(fiberglass-reinforced plastic), SMC, BMC composites.
        1. c. Nylon, PA, PA6, PA66 for reducing weight.
        1. d. low-density adhesives & sealants.
        1. e. heat insulation paints and coatings.
        1. f.  Construction (reducing warpage/shrinkage).
        1. g. Insulation and Buoyancy.
        1. h. artificial marble.

The composites industry is an application of microspheres that consumes the greatest amount by volume. Many of these microspheres are lightweight hollow glass or ceramic spheres that are added to binder material to create products with the lowest possible weight.

Integration of microspheres into composite parts increases the ease of applications and mixing. The ball-bearing effect improves flow and lowers the viscosity of resin mixes, which significantly simplifies processability, resulting in easier machinability, faster cycle times and cost savings. The smooth, spherical shape of microspheres allows even dispersion and packing efficiency. Microspheres can be used in most processing methods for thermoset and thermoplastic polymers such as extrusion and injection molding. They blend easily into compounds, which makes them adaptable to a variety of production processes, including spraying and casting.

Hollow glass microspheres provide weight reduction and resin extension in aerospace, automotive, construction, explosive, marine, coating, abrasive, film industry and sporting goods applications.

Flotation Devices and Underwater Vessels
Microspheres are widely used in the fiber-reinforced polyester industry to improve the manufacturing process for shower stalls, boats, some types of flotation devices and underwater vessels, offering the benefits of deep-sea buoyancy and subsea thermal insulation. Syntactic pipe insulation and buoyancy foams made with hollow microspheres are used in a growing number of deep-water recovery programs.

Automotive, Building, Marine and Aerospace
The automotive, building, marine and aerospace industries require the lowest possible weight for materials. The makers of syntactic foams require the controlled, closed cells that only microspheres can offer. Due to their physical characteristics, most microspheres are extremely good insulators, reflect and dissipate heat very effectively, and are also fire resistant. As a result, many fire-retardant materials and roof coatings are made using ceramic or glass microspheres. Microspheres are also used in acoustic/dielectric sensors and aerospace adhesives.

Oil and Gas
Microspheres are used in oil and gas production as an additive for lightweight cement slurries and allow reduction of cement slurry density without increasing the water content.

Paints and Coatings
Coatings containing microspheres are stronger and more durable than other coatings. Because hollow spheres lower the density of materials to which they are added, a gallon of paint or coating made with hollow microspheres will weigh less than the same product
made without them. Lower-density coatings are cheaper to produce and ship and easier to carry up ladders. Next-generation microspheres used in paint and coating applications enhance weatherability and durability of components and finished products.

Hollow Glass Microspheres, also called bubbles, microbubbles, or microballoons, are typically made out of borosilicate-sodalime glass blend formulation and provide the benefits of low density, high heat and chemical resistance. The walls of glass microspheres are rigid and typically have the thickness of 10% of the diameter of the sphere. Spherical microparticles are currently available in a broad range of densities from as low as 0.06g/c3 to as high as 0.80g/c3 and sizes from 5um to 180um in diameter. The crush strength of the hollow spheres is determined by the thickness of the walls and, as expected, the higher the sphere density the higher the crush strength. The lightweight hollow glass spheres are chemically stable, noncombustible, nonporous, and have excellent water resistance.

Hollow glass microspheres are also offered with conductive coatings. Conductive coating with optimized thickness provides spherical particles with good conductivity and shielding properties while maintaining the weight-saving benefit associated with hollow-core low-density materials. These conductive microbubbles are suitable for use in military applications, biotechnology, medical devices, electronics, and other specialty industries.

Hollow Glass Microspheres (Uncoated)
Hollow glass microspheres are light-weight, chemically stable materials, frequently used as functional additives to reduce weight (density) and improve buoyancy of materials.
Silver-Coated Hollow Glass Microspheres (Conductive)
Conductive silver coating on hollow glass microsheres offers benefits in catalysts, laser fusion targets, and electrically conducting bond line spacers.
Nickel-Plated Hollow Glass Microspheres (Conductive)
Conductive nickel-plated hollow microspheres are often used as a lightweight, lower cost, electrically conductive additive and an alternative option to silver.
Zinc Oxide (ZnO) Coated Hollow Glass Microspheres
Zinc oxide (ZnO) coating offers numerous advantages as a semiconductor, as well as high refractive index, high thermal conductivity, binding, antibacterial and UV-protection properties.
Photospheres™ – TiO2-Coated Hollow Glass Microspheres (Photocatalytic)
Glass microspheres coated with TiO2 in anatase form exhibit photocatalytic activity under ultraviolet (UV) irradiation. Excellent photocatalytic activity against a range of relevant organic pollutants and effective in reducing gaseous pollutants.
Isospheres™- TiO2-Coated Hollow Glass Microspheres (Light Scattering)
Hollow glass microspheres coated with rutile titanium dioxide (TiO2) and are designed to be high quality seeding material with excellent light scattering properties for high temperature applications in the experimental fluid dynamics and particle image velocimetry (PIV) industry.

Application areas of using hollow glass microspheres:

Bowling balls, cast polyester, cast synthetic foam, caulk, explosives, polyester putty, sealants, shallow water pipe insulation, potting compounds, tooling boards, spackling compound, SMC/ BMC, Deep sea pipe insulation, Golf Balls, RIM, Pultrusion, sprayable PVC Plastisol sealer, Sprayable syntactic foam, spray-up/lay-up, and Thermoplastics masterbatches.

The hollow glass microspheres are extremely versatile and are used as additives in an astonishing variety of products. For example, they reduce the density of body fillers to weight of plastic parts to underwater deep pipe insulation.

In Indian automotive industry using hollow glass microsphere could be an added advantage in plastic parts of the car. These tiny bubbles help reduce vehicle weight – improving fuel efficiency, so its all about fuel efficient car.

The hollow glass microspheres can be formulated into quick-drying, low-shrinkage, spackling and other construction materials. And they provide a wide range of additional benefits in applications ranging from sporting goods to solar reflective paint.

This article comes from geoconproducts edit released

With a series of alternative materials and rapid development, especially in the application of high performance glass beads to reduce thermal conductivity and reduce deep-sea oil and gas recovery feasible.With the deep undersea oil pipeline requires the development of deeper and more to geographic location requirements increase. When depth and stressful environment, usually filled with glass beads apply foam insulation, which makes deep-sea pipeline to extend long 50km or farther underwater.

Currently the use of hollow glass microspheres filled polymer synthesis deep strong buoyancy material has been applied in foreign countries.According to reports, the current foreign developed high compressive strength, low density buoyancy material is an epoxy binder, filled with hollow glass beads and a large number of additives, such as lightweight composite buoyant material used in deep-sea submarine, in the deep seaIt can withstand high pressure, and in the basic conditions for a long time does not absorb moisture.Although China has been carried out in this field for many years of research, but in terms of diving with buoyant material properties are still lagging behind the international advanced level.

Sinosteel Maanshan Institute of Mining Research Co.,Ltd established in 1963, it belongs to one of the global top 500–Sinosteel Group.So far, we have outstandingly completed a series of major national scientific and technological tasks and 118 Science and technology support projects.Meanwhile,we complete 2 National important technological equipment localization projects, 22 state-level new products & National torch plan projects and more than 12000 projects authorized by key unit in Province and mineral enterprises. Nowadays, we have been awarded more than 500 National & provincial Prizes for Progress in Science and Technology and 102 patents.



There filling performance energy efficient, low low oil, density, added 5% (wt) will be able to make the finished product increased by 25% to 35%, so as not to increase or even reduce the cost per unit volume of the coating. Hollow glass beads particles confined hollow spheres added to the coating formation of many independent microscopic cavity insulation, thus greatly improving the coating on the thermal and sound insulation, play a very good thermal insulation and noise reduction effect. The coating has a more waterproof, anti-fouling, corrosion resistance. When the surface of the hollow glass microspheres are chemically inert chemical resistance, as the film tightly packed particles of glass beads, the formation of low porosity, the coating formed on the surface of the moisture and corrosion caused by the blocking effect of ions protective film, played well protective effect.

Hollow glass beads spherical structure makes the impact force and stress have a good dispersion, added to the paint can well improve the resistance to external impact properties of the film, and the coating can be reduced due to thermal expansion and contraction the stress cracking.

Filling the hollow glass microspheres can effectively reduce other expensive fillers and pigments dosage (compare with titanium dioxide, but its volume costs beads 1/5) effectively enhance the adhesion of the coating. Low oil absorption properties of glass beads so that more resin can participate in film formation, so that the adhesion of the coating increased 3 to 4 times.


Mar 19, 2020 (The Expresswire) — Global “Hollow Glass Microsphere Market” forecast report provides an in-depth analysis of all market dynamics including drivers and restraints, and trends and opportunities. The report covers the competitive scenario of the major market players here which specifies their sales revenue, customer demands, company profile, import/export scenario, business strategies that will help the developing market segments in creating major business conclusions. The report further highlights the primary challenges and latest growth approaches contained by key players that establish the dynamic competitive spectrum of this business domain.

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A comprehensive evaluation of all opportunities and risks in the market.
Hollow Glass Microsphere market ongoing developments and significant occasions.
The detailed study of business techniques for the development of the market-driving players.
Conclusive study about the improvement plan of the market for approaching years.
Top to a bottom appreciation of market-express drivers, targets and major littler scale markets.
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The report also focuses on global major leading industry players of the Global Hollow Glass Microsphere market providing information such as company profiles, product picture and specification, capacity, production, price, cost, revenue and contact information. Upstream raw materials and equipment and downstream demand analysis is also carried out.

On the basis on the end users/applications, this report focuses on the status and outlook for major applications/end users, sales volume, market share and growth rate of Hollow Glass Microsphere Market applications includes:


Medical Care

Hollow Glass Microsphere Market Production by Regions:

United States
South Korea
Hollow Glass Microsphere Market report consumption with respect to other regions like Canada, Mexico, Asia-Pacific, China, India, Japan, South Korea, Australia, Indonesia, Malaysia, Philippines, Thailand, Vietnam, Europe, Germany, France, UK, Italy, Russia.

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The research provides answers to the following key questions:

What is the global (North America, South America, Europe, Africa, Middle East, Asia, China, Japan) production, production value, consumption, consumption value, import and export of Hollow Glass Microsphere?
Who are the global key manufacturers of Hollow Glass Microsphere industry? How is their operating situation (capacity, production, price, cost, gross and revenue)?
What are the types and applications of Hollow Glass Microsphere? What is the Hollow Glass Microsphere market share of each type and application?
What are the upstream raw materials and manufacturing equipment of Hollow Glass Microsphere? What is the manufacturing process of Hollow Glass Microsphere?
Economic impact on Hollow Glass Microsphere industry and development trend of Hollow Glass Microsphere industry.
What will the Hollow Glass Microsphere Market growth rate and size be in 2026?
What are the key factors driving the global Hollow Glass Microsphere industry?
What are the Hollow Glass Microsphere market trends impacting the growth of the Hollow Glass Microsphere Market?
What is the Hollow Glass Microsphere Market challenges to market growth?
What are the Hollow Glass Microsphere Market opportunities and threats faced by the vendors in the global Hollow Glass Microsphere Market?


Sinosteel Maanshan New Material Technology Co., Ltd is a comprehensive high-tech enterprise, which specialized in research、development、production and sales of High-performance Hollow Glass Microspheres, and it belongs to Sinosteel Maanshan Institute of Mining Research Co.,Ltd.