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SPHERES CTB350 is clean and graded cenospheres which have unusually high compressive strength and can easily handle pressures of 4,000 psi without breakage. This immense strength extends their versatility by providing increased breakage resistance during mixing, processing and application. Their light gray color consistency will always give you the results you expect, as well as delivering lower tint costs.

Features: Flame Retardant, Good Chemical Stability, Heat Resistance, Improved Rheology, Thermal Resistance

    Knowde Enhanced TDS

    Identification & Functionality

    Technologies

    Features & Benefits

    Benefits
    • Graded, pure, clean and white
    • Extreme heat resistance
    • Very high compressive strength
    • Reduced weight, shrinkage and sag
    • Improved impact resistance and thermal shock resistance
    • Excellent thermal insulation
    • Chemical stability
    • Improved rheology
    • Non-absorbency
    • Non-flammable
    • Potential costs savings through lower resin/binder usage

    Applications & Uses

    Extreme Heat Resistance

    With a melting point around 1300°C, clean and graded cenospheres from Ceno Technologies can withstand temperatures far higher than any comparable thin-walled hollow glass microsphere. This extreme temperature resilience is achieved through unique refractory properties.

    In addition to these unique features, Ceno Technologies clean and graded cenospheres provide all the benefits you would expect from a microsphere and can improve the properties and performance of many formulated products.

    Properties

    Physical Form
    Appearance
    Free Flowing Powder
    Chemical Properties
    ValueUnitsTest Method / Conditions
    SiO₂55 - 65%
    Al₂O₃25 - 33%
    Fe₂O₃1 - 6%
    CaO0.2 - 0.6%
    MgO0.5 - 2%
    NaO₂0.5 - 2%
    K₂O1 - 2%
    Typical Properties
    ValueUnitsTest Method / Conditions
    Nominal Particle Size250 - 350microns
    Approximate Particle Mean270microns
    pH7 - 9
    Particle Density0.45 - 0.8g/cm³
    Bulk Density0.32 - 0.5kg/L
    Melting Point1300°C
    Hardness5 - 6Moh Scale
    Thermal Conductivity0.1W/m.K
    Hydrostatic Crushing Strength5 - 30MN/m²

    Packaging & Availability

    Packaging

    The above clean and graded cenospheres are sold in bulk quantities by the container load, in 50 kilo sacks, 400 kilo jumbo bags (16 x 50 kilo sacks per wooden pallet with retaining strips, 20 pallets per 40ft container), or 16 tons per 40 ft container.