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Picture of 1mm size HMG1
FractalBalls™
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Macropicture of 3mm size
HMG1 FractalBalls™
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Material
Safety Data Sheet
reviewed 2009
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Product Specifications
(Nominal Only)
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3mm |
5mm |
| Service Temperature °C (See FAQ's) |
1900 |
1900 |
| Density g/cm3 |
~ 1.1 |
~1.1 |
| Porosity, % |
~70 |
~70 |
| Surface Area(BET), cm2/g |
950 |
990 |
| Liquid (chemical) absorption, wt% |
50 |
50 |
| Water absorption characteristics |
Generally provided with Hydrophobic surfaces |
Chemical Composition
% Al2O3
% SiO2 (diverse forms)
not exceeding (mostly combined with alumina)
Impurities
Free silica |
~92
8
<0.5
nil* |
~92
8
<0.5
nil* |
| Loss on ignition |
0 |
0 |
| Cold Compression strength (N/mm2 or MPa) for each
individual ball |
- |
1 for 3mm
ball size |
| Linear shrinkage at service temperature 24h in % |
<1% |
<1% |
| Nominal thermal conductivity W/m, K 1200°C |
0.2 |
0.2 |
| Usual dimensions in mm (range) |
2-3.5 |
4-5 |
* Nil below detectable levels
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FRACTALBALLS™
may be used as thermal insulation, chemical
substrates or as
structural materials when bonded
with FRACTALPASTE™.
These have multi-purpose use.
When bonded to each other they
are called Fractalins™.
- Use as thermal insulation:
FRACTALBALL™ has
very low density, low thermal conductivity, high strength, and high
melting point; it can be formed into any shape and size and be used
in any refractory/insulation parts for high and low temperature application.
- Use for high surface reactivity:
FRACTALBALLS™ have
very high porosity/low density, high strength, and high melting point.
They may be used for high temperature filter and membrane substrate
applications.
Typical Applications
are:
- Light
weight structure materials.
- Composite
manufacture reinforcement additive for metal, ceramic, or polymer.
- Armor,
bio-ceramic, abrasive brake pads etc.
- Coatings
for surfaces (metals, ceramics, polymers.)
- Thermal
insulation
- Fire
protection and stops
- High
temperature furnace linings
- Kiln
furniture
- Gas
combustion burners
- Repairing
or relining refractory cracks and holes
Other applications
are:
- Filter
- Molten
metal castings (aluminum, copper, iron)
- Steam
cleaning.
- Apply
as light weight coating for vehicles.
- Oil
trapping and recovery; grease filters; chemical and water purification
processes.
- Hot-gas
filter substrates for electrode.
- Electronic
substrate carriers for bioreactors.
- Desiccants
- Substrates
for catalytic converters
- Use
as light weight structural materials
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FRACTALBALL™ has a unique microstructure,
very low density, high strength, and high hardness
What is the difference between FRACTALINS™ and FRACTALPASTE™
bonded FRACTALBALLS™?
The FRACTALIN™
material and the FRACTALPASTE™
bonded FRACTALBALLS™ are bulk materials
consisting of stacked/bonded FRACTALBALLS™.
However, because of differences in the manufacturing process, they display
slightly different properties as shown below. FRACTALINS™
are factory products shapes/boards made by a special joining process.
The FRACTALPASTE™
bonded FRACTALBALLS™,
on the other hand, are made into shapes/boards with the mixing and firing
of FRACTALBALLS™
and FRACTALPASTE™
by the user. (See section on how to bond FRACTALBALLS™
with FRACTALPASTE™).
The HMG1 material, of which the FRACTALBALLS™
are made, and the FRACTALPASTE™
material may be used up to temperatures in excess of 1850°C. All
trade marks on this document belong to MATTECH CORPORATION unless otherwise
stated.
FRACTALBALL™is
an unique lightweight, non-hollow porous ball with a very low density
and high strength. The material of the FRACTALBALLS™ (called HMG1) has excellent heat, chemical
and mechanical stability; the spheres have low thermal conductivity
and high thermal shock resistance. The spheres are sold in a fully fired
condition with excellent dimensional stability up to 1900°C. FRACTALBALLS™ are environmental-friendly materials: they
do not contain any hazardous materials such as organic volatents or
fibrous materials, and will not produce any smoke or odor when heated.
They also have desirable chemical, physical and mechanical properties,
such as inertness to chemical attack (solvents, acids, alkalies, and
detergents), non-wettability by molten metals such as aluminum, high
thermal stability, high strength, and micro-biological stability. These
features permit the FRACTALBALLS™to
be used in various applications.
FRACTALBALLS™,
which are made from the HMG1 material, may be used in loosely stacked
form or bonded into any size and shape part by bonding the FRACTALBALLS™ with FRACTALPASTE™.
These flexible processing possibilities allow FRACTALBALLS™ to be use in various technologies.
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1mm Ball
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3mm Ball
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5mm Ball
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Surface Microstructure
of different size Fractalballs™. The micron marker is 10 microns.
Properties of Material
HMG1:
| Color: White |
| Nominal Composition,wt % |
| SiO2: (diverse forms) not exceeding 8% (mostly
combined with Alumina) |
| Al203: ~92% |
| Impurities: less than 1% |
| Ball Density, g/cc: ~1.1 |
| Stacked Density,g/cc: ~0.7 |
| Diameter,mm: (major range 1- 5 mm) |
| Maximum Use Temperature,°C: up
to1900° C Load carrying capacity diminishes after 1870°C.
(See FAQ's) |
Ball Porosity, % (average standard approximate): 70
(Can be made with higher porosity when required for custom orders) |
| Strength: Each 3mm ball supports approximately 10 kg of
Load. High Strength. |
FractalBalls™ have a porosity of about
70%; when loosely stacked the porosity is about 85%, FractalPaste™
bonded FractalBalls™have a porosity of 75%
whereas Fractalins™ have a porosity of about
80%. FractalBalls™glued with FractalPaste™ has a strength of 5 MPa whereas Fractalins™
have a strength of about 6 MPa. (Our data is approximate and changes
from batch to batch). Patents
Applied For and Pending. FRACTALBALLS™,
FRACTALINS™, FRACTALPASTE™,
FIBERFREE™, and FRACTALBALL™ are trademarks of MATTECH CORPORATION.
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