Polypropylene Disk Metallized with Aluminum

Polypropylene Disk Metallized with Aluminum offers the durability and chemical resistance of polypropylene combined with the conductive, reflective, and barrier properties of an aluminum coating in a circular form factor. This makes it ideal for precision optical applications, capacitor elements, and specialized packaging components requiring defined shapes. Industries utilize it for circular EMI shielding inserts, reflective optical masks, and capacitor electrode disks. In research, it is used to study circular metallized film performance in optical reflection experiments, advanced capacitor fabrication, and thin-film adhesion testing. The disk format’s ease of integration into assemblies and the hybrid material’s barrier and electrical properties ensure reliable performance in targeted scientific and industrial systems.

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Tolerance

Properties

Reference & Citations

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Tolerances

Metallised Film

Thickness		±10%

Disk

Diameter		±0.5mm

Material Properties for Polymers

Chemical Resistance

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

Mechanical Properties

Element	Value
Coefficient of friction	0.1-0.3
Hardness - Rockwell	R80-100
Elongation at break( % )	150-300, for biax film >50
Tensile modulus( GPa )	0.9-1.5, for biax film 2.2-4.2
Izod impact strength( J m⁻¹ )	20-100
Abrasive resistance - ASTM D1044( mg/1000 cycles )	13-16
Tensile strength( MPa )	25-40, for biax film 130-300,

Electrical Properties

Element	Value
Dielectric constant @1MHz	2.2-2.6
Dissipation factor @ 1MHz	0.0003-0.0005
Dielectric strength( kV mm⁻¹ )	30-40
Surface resistivity( Ohm/sq )	10¹³
Volume resistivity( Ohmcm )	10¹⁶-10¹⁸

Physical Properties

Element	Value
Flammability	HB
Radiation resistance	Fair
Refractive index	1.49
Resistance to Ultra-violet	Poor
Limiting oxygen index( % )	18
Water absorption - equilibrium( % )	0.03
Density( gcm⁻³ )	0.9

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	100-105
Heat-deflection temperature - 1.8MPa( C )	60-65
Lower working temperature( C )	50
Upper working temperature( C )	90-120
Specific heat( J K⁻¹ kg⁻¹ )	1700-1900
Thermal conductivity( W m⁻¹ K⁻¹ )	0.1-0.22@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	100-180