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

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