Hebei Gator Chemicals Technology co.,ltd |
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Ultrafine Cenospheres used for light-weight for satellites, rockets and spacecraft(100-200mesh)
Cenospheres are hollow spherical powder ultra-light inorganic
non-metallic materials with a true density of 0.15-0.65g/cm3, a
particle size of 2-120μm, a wall thickness of 1-2μm, and
compressive strength. Between 3-125MPa, it has the characteristics
of light-weight, large volume, low thermal conductivity, high
compressive strength, and good fluidity.
The density of hollow glass microspheres is about one-tenth of the
density of conventional filler particles. After filling, the basis
weight of the product can be greatly reduced, and the production
resin can be replaced and saved, and the product cost can be
reduced.
1.Chemical composition:
Item | SiO2 | Al2O3 | Fe2O3 | SO3 | CaO | MgO | K2O | N2O |
Content | 56-62 | 30-38 | 2-4 | 0.1-0.2 | 0.2-0.4 | 0.8-1.2 | 0.5-1.1 | 0.3-0.9 |
2.Physical properties:
Item | Spec |
Buld Density | 0.35-0.50 |
True Density | Below0.90 |
Moisture(%) | Below 0.4 |
Sinker(vol%) | Below5 |
Compressive Strength(vol%) | Above60 |
Av.Partical Size(μm) | 80-150 |
Whiteness | Above 30 |
3.Characteristics :
(1). High refractoriness:
the main chemical composition of the floating beads is silicon and
aluminum oxide, wherein the silicon dioxide is about 50-65%, and
the aluminum oxide is about 25-35%. Because the melting point of
silica is as high as 1725 degrees Celsius, the melting point of
aluminum oxide is 2050 degrees Celsius, which are all high
refractory materials. Therefore, the floating beads have an
extremely high degree of refractoriness, generally reaching
1600-1700 degrees Celsius, making them excellent high-performance
refractories.
(2). Light-weight:
thermal insulation; floating beads wall is hollow, the cavity is
semi-vacuum, only a very small amount of gas (N2, H2, and CO2,
etc.), heat conduction is extremely slow. Therefore, the floating
beads are not only lightweight (weight: 250-450 kg / m3), but also
excellent thermal insulation (thermal conductivity normal
temperature 0.08-0.1), which laid the foundation for its role in
the field of lightweight insulation materials.
(3). High hardness, high strength:
because the floating beads are made of silicon-aluminum oxide
mineral phase (quartz and mullite) hard glass body, the hardness
can reach Mohs 6-7, static pressure strength is as high as
70-140MPa, true The density is 2.10-2.20 g/cm3, so the floating
beads have high strength.
(4).the insulation is not conductive:
generally, the resistance of the insulator decreases with the
increase of temperature, the floating beads are opposite, the
resistance increases with the increase of temperature. This
advantage is not available in other insulating materials.
Therefore, it can be made into an insulating material with
excellent performance.
(5). fine particle size, large specific surface area;
floating beads naturally formed particle size of 1-250 microns. The specific surface area is 300-360g/cm2, which is similar to cement. Therefore, the floating beads do not need to be ground and can be used directly. Fineness can meet the needs of various products.
4. Usage :
Ultrafine bead application
(1) As a modified material of cement, ultrafine beads are used to
prepare cement to improve the quality and performance of cement.
(2). Using the self-compacting and spherical characteristics of
ultra-fine microbeads, it is applied to marine concrete,
cement-based grouting materials, cement-based self-leveling mortar,
self-compacting concrete and self-leveling concrete.
(3). As a filler for the plastic industry, ultrafine beads have the
advantages of low cost, high strength, good heat resistance, and
low thermal conductivity;
(4)ultra-fine beads for the production of good lightweight
refractory materials, so that it has high strength, long life, low
thermal conductivity and other characteristics;
(5) ultra-fine beads to make a good function of fire retardant
coatings and putty powder;
(6)Using the characteristics of high-strength microbeads with high
strength and wear resistance, it can be made into automobile brake
pads, military friction plates and oil rig brake pads, etc. It has
the characteristics of good physical properties, long service life,
and low production cost.
(7)As a filling material for artificial marble, ultra-fine beads
can produce a variety of colored stripes of marble, which is a
beautiful and lightweight new decorative material;
(8) The microbeads replace the white carbon black as a rubber
filler, which can greatly enhance the wear resistance of the
rubber;
5.Specifications:
100-150 mesh
6.Our service:
(1)Free Samples
--Free samples within 1-2KGs, but the delivery fee should be paid
by your side.
(2)All-over Certifications
--We can supply MSDS, TDS, Test Report, Place of Original (Form A,
Form E,etc.), SGS test, etc. certifications.
(3) Strictly Quality Control
--Our strictly Quality Control Dept will inspect each batch of
goods before loading, only after the goods qualified, it can be
allowed to out of the factory.
(4)Professional Document Service
--After shipped, our professional document department will serve
you all the documents for you timely.
7.Contact