Cellulose Acetate Film Metallized with Aluminum

Cellulose Acetate Film Metallized with Aluminum integrates the clarity, flexibility, and low moisture absorption of cellulose acetate with the reflective and barrier-enhancing properties of a thin aluminum layer. This metallization process yields a lightweight, dimensionally stable film with improved light-blocking, thermal reflectivity, and protection against gas and moisture permeation. Industries such as optics, electronics, and specialty packaging employ this material for high-performance reflective surfaces, electromagnetic shielding, and protective laminates. Specific uses include reflective optical backings in display systems, moisture-resistant capacitor dielectric layers, and high-barrier films for precision optical instruments. Research leverages this composite for studying polymer–metal adhesion, improving thin-film mechanical durability, and optimizing multilayer coatings for photonic applications. The synergy of polymer flexibility with metallic functionality makes it an essential choice for advanced product design and high-reliability industrial processes.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Metallised Film

Thickness		±10%

Sizes

Linear dimension	<100mm	±1mm
Linear dimension	>=100mm	+2% / -1%

Material Properties for Polymers

Chemical Resistance

Element	Value
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

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

Physical Properties

Element	Value
Flammability	HB
Radiation resistance	Fair
Refractive index	1.49
Resistance to Ultra-violet	Fair
Limiting oxygen index( % )	19
Water absorption - over 24 hours( % )	1.9-7
Density( gcm⁻³ )	1.3

Mechanical Properties

Element	Value
Hardness - Rockwell	34-125
Tensile modulus( GPa )	01-Apr
Izod impact strength( J m⁻¹ )	100-450
Abrasive resistance - ASTM D1044( mg/1000 cycles )	65
Tensile strength( MPa )	12-110

Thermal Properties

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