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Crown Clay is a high quality, air float, sedimentary, hard kaolin clay. Strict attention to production and quality control assures a high degree of product uniformity. Hard clays are very fine in their natural particle size. This limits how much hard clay can be incorporated into a rubber com-pound. Typical loading levels range from 20 to 150 phr. Hard clay provides high modulus, tensile strength, abrasion re-sistance, green strength and provides stiffness to elastomeric compounds.

Functions: Filler, Reinforcement

Chemical Family: Clays, Kaolins

Features: Consistent High Quality, Good Abrasion Resistance, Good Green Strength, Good Stiffness, High Modulus, High Tensile Strength, Low Residuals, Uniform Distribution

    Knowde Enhanced TDS

    Identification & Functionality

    Chemical Family
    Plastics & Elastomers Functions
    Technologies

    Features & Benefits

    Applications & Uses

    Plastics & Elastomers End Uses

    Properties

    Typical Physical Properties
    ValueUnitsTest Method / Conditions
    325 Mesh Screen Residuemax. 0.25%-
    G.E. Brightness77--
    Median Particle Diameter0.3μm-
    Moisturemax. 1%-
    Oil Absorption38g/100g-
    pH (10% DI Water)5--
    Specific Gravity2.6g/cc-
    Water of Plasticity25--
    Particle Size Distribution
    ValueUnitsTest Method / Conditions
    Finer Than (0.5μm)76%-
    Finer Than (10μm)98%-
    Finer Than (1μm)87%-
    Finer Than (20μm)99%-
    Finer Than (2μm)92%-
    Finer Than (5μm)96%-
    Composition
    ValueUnitsTest Method / Conditions
    Al2O337.7%-
    CaOmax. 0.1%-
    Fe2O1.4%-
    K2Omax. 0.1%-
    LOI13.7%-
    MgOmax. 0.1%-
    Na2Omax. 0.1%-
    SiO245.1%-
    TiO21.9%-