Hollow glass microsphere, glass bubble, glass microsphere, floater, Floating Beads, pearl drift
Summary:
K37 glass bubbles have a density of 0.37 g/cc and an isostatic crush strength of 3000 psi.
Properties:
Lower viscosity, improved flow
Increased filler loading, reduced cost
VOC reduction
Chemical stability and inertness
Reduced dielectric constant
Thermal conductivity reduction
Temperature resistance
Applications:
Mining
Paints and coatings
Rubber and plastic
Compounding
Transportation
From:3M
S38HS glass bubbles have a density of 0.38 g/cc and an isostatic crush strength of 5500 psi. The S Series glass bubbles have smaller particle sizes than the K Series. The S38HS has a higher crush strength than the S38 glass bubble.
Properties
Low thermal conductivity
Virtually insoluble in water or oil
Increased Production Throughput
Lightweighting
Temperature Resistance
Chemical Resistance
Applications
Paints and coatings, Rubber and plastic, Compounding, Insulation and buoyancy, Transportation
From:3M
Engineered additives for a new generation of high performance paints and coatings.
Glass Bubbles are lightweight/high-strength hollow glass spheres, used as alternatives to conventional fillers in a variety of paints and specialty coatings, including spackling, caulks, adhesives, roof coatings and more.
From:3M
High strength, low-density hollow glass microspheres for critical deepwater components.
These additives are used for density reduction, thermal insulation and buoyancy in many
kinds of syntactic foam compositions.
From:3M
Summary：
K25 glass bubbles have a density of 0.25 g/cc and an isostatic crush strength of 750 psi.
Properties：
Lower viscosity, improved flow
Increased filler loading, reduced cost
VOC reduction
Chemical stability and inertness
Reduced dielectric constant
Thermal conductivity reduction
Temperature resistance
Applications：
Mining
Paints and coatings
Insulation and buoyancy
Transportation
Glass microspheres are microscopic spheres of glass manufactured
for a wide variety of uses in research, medicine, consumer goods and
various industries. Glass microspheres are usually between 1 to 1000
micrometers in diameter, although the sizes can range from 100
nanometers to 5 millimeters in diameter. Hollow glass
microspheres,sometimes termed microballoons, or glass bubbles have
diameters ranging from 10 to 300 micrometers.
Hollow spheres are used as a lightweight filler in composite materials
such as syntactic foam and lightweight concrete. Microballoons give
syntactic foam its light weight, low thermal conductivity, and a
resistance to compressive stress that far exceeds that of other
foams. These properties are exploited in the hulls of submersibles and
deep-sea oil drilling equipment, where other types of foam would
implode.
Hollow spheres of other materials create syntactic foams with
different properties, for example ceramic balloons can make a light
syntactic aluminium foam.
Hollow spheres also have uses ranging from storage and slow release
of pharmaceuticals and radioactive tracers to research in controlled
storage and release of hydrogen. Microspheres are also used in
composites to fill polymer resins for specific characteristics such as
weight, sandability and sealing surfaces. When making surfboards for
example, shapers seal the EPS foam blanks with epoxy and
microballoons to create an impermeable and easily sanded surface
upon which fiberglass laminates are applied.
Glass microspheres can be made by heating tiny droplets of dissolved
water glass in a process known as ultrasonic spray pyrolysis (USP),
and properties can be improved somewhat by using a chemical
treatment to remove some of the sodium. Sodium depletion has also
allowed hollow glass microspheres to be used in chemically sensitive
resin systems, such as long pot life epoxies or non-blown
polyurethane composites
Additional functionalities, such as silane coatings, are commonly
added to the surface of hollow glass microspheres to increase the
matrix/microspheres interfacial strength (the common failure point
when stressed in a tensile manner).
Microspheres made of high quality optical glass, can be produced for
research on the field of optical resonators or cavities.
Glass microspheres are also produced as waste product in coal-fired
power stations. In this case the product would be generally termed
“cenosphere” and carry an aluminosilicate chemistry (as opposed to
the sodium silica chemistry of engineered spheres). Small amounts of
silica in the coal are melted and as they rise up the chimney stack, expand
and form small hollow spheres. These spheres are collected together
with the ash, which is pumped in a water mixture to the resident ash dam.
Some of the particles do not become hollow and sink in the ash
dams, while the hollow ones float on the surface of the dams. They become a
nuisance, especially when they dry, as they become airborne and
blow over into surrounding areas.
Source: Wikipedia
Fluorochromes – Excitation and Emission Wavelengths
Below is a very useful table of different fluorochromes that can be used in research requiring precise answers. For additional information about using fluorescent microspheres fluorochromes see this related article. "Fluorescent Microspheres – Properties and Applications" floating beads;
Table fluorochrome is also available for download in pdf format
Product informations: CAS No.： 65997-17-3 Other Names： glass bubbles Place of Origin： Anhui, China (Mainland) Grade Standard： Industrial Grade Purity： pure white Appearance： white Application： filler Brand Name： SINOSTEEL Model Number： T20 - T60 Color： White
Detailed Product Description 1.Improve flow properties 2.A superior substitute of resin 3.Low shrinkage and warpage 4.More economical 5.Adjusting density Application of hollow glass microspheres in the synthetic foam. Appearance: White fine powder Particle shape: Hollow sphere Composition: Soda lime borosilicate quality True density: 0.15-0.60g/cc Average particle size: about 30-60μ Compressive strength: about 3-60MPa Thermal conductivity: 0.03-0.06w/m.k The composite material of hollow glass microspheres and resin is commonly referred as synthetic foam with its main characteristics of low density.
With high mechanical properties, it is a wide set of multifunctional composite materials for vibration damping, insulation, fire prevention. Now
it is mainly used in manufacturing of aircraft, spacecraft, and ship. The synthetic foam with addition of hollow glass microspheres has not only
the porous structure, but also makes core materials own low moisture absorption and high compressive strength due to the closed cell structure.
Product Details: CAS No.： 65997-17-3 Other Names： glass bubbles MF： Soda Lime Borosilicate Place of Origin： Anhui, China (Mainland) Grade Standard： Industrial Grade Purity： 100% Appearance： pure white Application Industrial： Chemicals Additives Brand Name： SINOSTEEL Model Number： T32, T40,T46, T60 True density： 0.15-0.60g/cc Average particle size： about 30-60μm Compressive strength： about 1.5-60MPa Thermal conductivity： 0.03-0.06w/m.k
Detailed Product Description 1.Improve flow properties 2.A superior substitute of resin 3.Low shrinkage and warpage 4.More economical 5.Adjusting density Application of Glass microspheres in plastic, rubber etc. Appearance: White fine powder Particle shape: Hollow sphere Composition: Soda lime borosilicate quality True density: 0.32-0.60g/cc Average particle size:about 30-50μ Compressive strength: about 12-60MPa Thermal conductivity: 0.03-0.06w/m.k 1.Hollow glass microspheres are used as filler of ultra-high molecular polyethylene. It is not only used as solid lubricant in process, but can
modify the comprehensive mechanical properties of the ultra-high molecular polyethylene to improve its strength and abrasion resistance. 2.Nylon 6 with the addition of hollow glass microspheres has a higher tensile strength, impact strength, hardness and other improved mechanical
properties and can prevent the material aging caused by the light and heat. With the increase of glass microspheres content, the Martin heat-
resistant temperature of materials rises. It can used in the production of bearings, cameras,furniture and its accessories. 3.Hollow glass microspheres are added into rigid PVC to manufacture profiled materials, pipes and plates. These materials have good stability in
dimension, then their the rigidity, heat resistance, productivity will be improved. 4.Filled into ABS,this can improve the size stability of material, reduce shrinkage, improve the compressive strength and flexural modulus, and
improve the performance of the surface paint.So it can be widely used in production of TV cabinet, automotive plastic parts, audio equipments,
household appliances;
5.Filled into epoxy resin,it can reduce the material’s viscosity and improve the mechanical properties. So it can be used in production of comp-
osite foam plastic, deep-sea submarine,lifeboat, etc.. 6.Filled into unsaturated polyester. It decreases the shrinkage and water absorption of materials, increase its wear resistance. Meanwhile, less
space is produced when laminated and coated. So it can be applied in production of glass-steel products, polishing wheels, tools, etc.
7.Rubber with hollow glass microsphere is a kind of good high-pressure, wide-band and sound-absorbed material. The target body made of the rubber, has
many practical advantages, such as easily producing the zero buoyancy of the target body, and thus it is suitable for making drag target; Its
good flexibility can make target body easy folding and deploying.
