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Cellulose Acetate ( CA )

Material Information

Buy Cellulose Acetate on-line

We stock and supply the following standard forms:
Film Metallized Film
Film Metallized Film

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Common Brand Names:
Clarifoil, Dexel, Tenite Acetate
 
General Description:  

General Description : An amorphous, transparent and colorless, glossy and reasonably hard thermoplastic with good clarity but only moderate UV stability and chemical resistance. Its high moisture absorption can lead to the normal difficulties of dimensional changes.

Applications include spectacle frames, tool and brush handles and packaging including stiff thin-walled tubes for "display packaging". Films are widely used for graphics purposes and are available from stock in selected thicknesses (and other thicknesses as special orders).

   

Chemical Resistance

Acids - concentrated Poor
Acids - dilute Good-Poor
Alcohols Fair-Poor
Alkalis Poor
Aromatic hydrocarbons Good-Poor
Greases and Oils Good
Halogenated Hydrocarbons Good-Poor
Halogens Poor
Ketones Poor

Electrical Properties

Dielectric constant @1MHz ~5
Dielectric strength ( kV mm-1 ) 11
Dissipation factor @ 1kHz 0.06
Volume resistivity ( Ohmcm ) 5 x 1012

Mechanical Properties

Abrasive resistance - ASTM D1044 ( mg/1000 cycles ) 65
Hardness - Rockwell 34-125
Izod impact strength ( J m-1 ) 100-450
Tensile modulus ( GPa ) 1.0-4.0
Tensile strength ( MPa ) 12-110

Physical Properties

Density ( g cm-3 ) 1.3
Flammability HB
Limiting oxygen index ( % ) 19
Radiation resistance Fair
Refractive index 1.49
Resistance to Ultra-violet Fair
Water absorption - over 24 hours ( % ) 1.9-7.0

Thermal Properties

Coefficient of thermal expansion ( x10-6 K-1 ) 80-180
Heat-deflection temperature - 0.45MPa ( C ) 52-105
Heat-deflection temperature - 1.8MPa ( C ) 48-86
Lower working temperature ( C ) -20
Specific heat ( J K-1 kg-1 ) 1200-1900
Thermal conductivity @23C ( W m-1 K-1 ) 0.16-0.36
Upper working temperature ( C ) 55-95

Properties for Cellulose Acetate Film

Property Value
Dissipation Factor @1MHz 0.038
Elongation at Break % 15-55
Heat-sealing Temperature C 176-232
Initial Tear Strength g µm-1 0.018-0.036
Permeability to Carbon Dioxide @25C x10-13 cm3. cm cm-2 s-1 Pa-1 17
Permeability to Hydrogen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 2.5
Permeability to Nitrogen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.2
Permeability to Oxygen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.6
Permeability to Water @25C x10-13 cm3. cm cm-2 s-1 Pa-1 4000-5000
All information and technical data are given as a guide only. Although every effort has been made to ensure that the information is correct, no warranty is given as to its completeness or accuracy.

Buy Cellulose Acetate on-line

We stock and supply the following standard forms:
Film Metallized Film
Film Metallized Film

Choose a form to search our on-line catalog  

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