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Polyethylene naphthalate ( PEN )

Material Information

Buy Polyethylene naphthalate on-line

We stock and supply the following standard forms:
Film Granule Laminate Rod
Film Granule Laminate Rod

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Common Brand Names:
Kaladex, Kalidar
 
General Description:  

General Description : A polyester that is chemically quite similar to PET but which is more temperature resistant. So far available only as biaxially oriented and heat stabilized films, they are semi-crystalline and colorless, either crystal clear or slightly hazy (the latter are available from Goodfellow stock). Compared to their PET equivalents, they start to shrink significantly at 190C rather than 150C and are certified for long term electrical use at 155C rather than 105/130C. Their tensile strengths are similar, but the modulus of PEN films is higher - say 25% at ambient temperatures but several times higher in the 100-150C region. They also have better UV resistance and barrier properties and are more resistant to hydrolysis in alkaline or very hot aqueous conditions. They are, however, more expensive and have a lower flex life.

Applications for the films are mainly in the electrical and electronic areas.

   

Chemical Resistance

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

Electrical Properties

Dielectric constant @1MHz 3.2 @ 10KHz
Dielectric strength ( kV mm-1 ) 160 @ 0.075mm
Dissipation factor @ 1kHz 0.005
Dissipation factor @ 1MHz 0.0048 @ 10KHz
Surface resistivity ( Ohm/sq ) 1014
Volume resistivity ( Ohmcm ) 1015

Mechanical Properties

Coefficient of friction 0.27 - biax film
Elongation at break ( % ) 60 - biax film
Tensile modulus ( GPa ) 5-5.5 - biax film
Tensile strength ( MPa ) 200 - biax film

Physical Properties

Density ( g cm-3 ) 1.36
Flammability VTM-2 - UL94, 0.075mm
Optical transmission ( % ) 84 @ 0.075mm
Resistance to Ultra-violet Fair
Water absorption ( % ) 0.4

Thermal Properties

Coefficient of thermal expansion ( x10-6 K-1 ) 20-21 - biax film
Thermal conductivity @23C ( W m-1 K-1 ) 0.15
Upper working temperature ( C ) 155

Properties for Polyethylene naphthalate Film

Property Value
Permeability to Carbon Dioxide @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.01
Permeability to Oxygen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.006
Permeability to Water @38C x10-13 cm3. cm cm-2 s-1 Pa-1 40
Shrinkage % 0.8 - 5min @ 190C
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 Polyethylene naphthalate on-line

We stock and supply the following standard forms:
Film Granule Laminate Rod
Film Granule Laminate Rod

Choose a form to search our on-line catalog  

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