• Cellulosics CA, CAB, CAP, CN

    APPLICATIONS

    Spectacle frames, toothbrushes, tool handles, transparent wrapping, metallised parts (reflectors etc), pen barrels.

    PROPERTIES

    Rigid, transparent, tough (even at low temperatures) low electrostatic pick up, easily moulded and relatively low cost.

    PHYSICAL PROPERTIES
    Tensile Strength 0.5 - 4.0 N/mm²
    Notched Impact Strength 2.0 - 6.0 Kj/m²
    Thermal Coefficient of expansion 80 - 180 x 10-6
    Max Cont Use Temp 45 - 70 oC
    Density 1.15 - 1.35 g/cm3

    RESISTANCE TO CHEMICALS
    Dilute Acid **
    Dilute Alkalis *
    Oils and Greases ****
    Aliphatic Hydrocarbons ****
    Aromatic Hydrocarbons *
    Halogenated Hydrocarbons *
    Alcohols *

    KEY * poor ** moderate *** good **** very good

    CURRENT CASE STUDIES

    moulded spectacle frameSpectacle frames moulded in cellulose acetate. Low softening point (for easy adjustment) and resistance to cosmetic chemicals complement the good appearance.