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PRODUCTS >> Nanometer materials

cenosphere

Country of Origin
Shanghai china

Specifications
Cenospheres are light gray or off white lightweight, inert and nonmetallic hollow ceramic spheres in
the range from 400um to 0.01um. With N2 or CO2 inside and over 95%spheres, the material has
excellent fluidity as well as sound, electric and heat insulation. Hence it is called "The Space Era Material"

.Product Characteristics:
1. Hollow spheres with spherical morphology: The hard shell of the sphere is 8---10% of its diameter.
2. Light: The low bulk density can greatly reduce cost of products, resin demand and weight of the end products.
3. High compressive strength: can greatly improve the weariness and antisepsis operation of the end products.
4. Low thermal, electrical and sound conductivity: Cenospheres are extremely resistant to heat and typically have a melting point in excess of 1300. As cenospheres are hollow they have a relatively low coefficient of thermal conductivity, typically 0.09W/mk.
5. Noninflammable.
6. Low shrinkage: Cenospheres are one the few products in the filler industry today that can meet the requirements for low shrinkage. Cenospheres can reduce shrinkage when utilized in high volume loadings.
7. insulation: Can be used in electronic filling and sealing materials, instrument boards, switches, etc.
8. Low cost: Compared with mea-made glass balls, Cenosphere is only 2/3 at the price.

Physical Properties

  Ig-Loss(%)

Whiteness
(deg)

Moisture
(maximum)(%)
Apparent specific
gravity (g/ml)
bulk specific
gravity (g/ml)
Floating(%)
gr-300um 1.11 74.1 0.13 0.75 0.35 98.9
gr-150um *** *** 0.11 0.66 0.34 97.8
gr-120um *** *** 0.1 0.67 0.33 97.6
gr-75um *** *** 0.22 0.72 0.35 90

Chemical Components:
Mainly made of SiO2 and Al2O3, Cenosphere is similar with contents of ceramics. Containing N2 and CO2 inside, it is stable in chemicals. The alumino-silicate shell is resistant to water, any organic solvents, acids or weak alkalis. Like most glasses, Cenospheres are not resistant to strong alkalis.

Chemical Properties

SiO2 Al2O3 Fe2O3 CaO MgO Na2O K2O TiO2
300um 49.73 44.14 0.85 1.58 0.31 0.2 0.57 0.77
150um *** *** *** *** *** *** *** ***
120um *** *** *** *** *** *** *** ***
75um *** *** *** *** *** *** *** ***

Main Usage:
Due to its specific surface, excellent physical and chemical properties, Cenospheres are widely used as multi-functional filling materials with high performances in rubber, plastics, dopes, oil paints, encapsulation materials, oil industry, space industry, glass steels, etc. With improvements in performances of the end products and reduction of costs, Cenosphere has promising market prospect as well as utilization benefits.
1. Dopes & oil paints: paints, bond, dopes for walls, vehicle putty, insulating, antiseptic and fireproof paints;
2. Plastics: the products of POM, PA, PBT, PET, PP, and so on. Like panels, boards, vehicle decorations, glass fiber products.
3. Rubber: floors, boards, wires and lines, insulating devices, sole, conveyer belt, vehicle parts and bodies, fender-guard, etc.
4. Construction materials: fire and water - proof materials, processed asphaltum, high-level road pavement, concrete repair materials;
5. Encapsulation material: transformer filling material, electric encapsulation materials;
6. Glass steel products: glass steel furniture, boats, etc.
7. Space or military products: explosive, invisible paints for planes, ships and even soldiers, heat and compression insulating compounds, deep- water submarine.

 
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