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Polyethersulfone ( PES )

Material Information

Buy Polyethersulfone on-line

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

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Common Brand Names:
Ultrason E, Victrex PES
 
General Description:  

General Description : An amorphous, transparent and pale amber high performance thermoplastic with the characteristics common to this group - see PEEK. It has a slightly higher temperature resistance than PEI (but less than PEEK) and is the most temperature resistant transparent commercially available thermoplastic. It has a relatively high water absorption and, in common with many other plastics, drying is essential before e.g. thermoforming. It has poor fatigue characteristics and is prone to environmental stress cracking but has good long term thermal ageing resistance and reasonable radiation resistance. Its chemical resistance is not as wide as PEEK's; hence stable solutions can be made if solvents are correctly chosen.

Applications include electrical and electronic components, medical etc. equipment that needs repeated sterilization and photographic accessories.

   

Chemical Resistance

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

Electrical Properties

Dielectric constant @1MHz 3.7
Dielectric strength ( kV mm-1 ) 16
Dissipation factor @ 1MHz 0.003
Volume resistivity ( Ohmcm ) 1017

Mechanical Properties

Abrasive resistance - ASTM D1044 ( mg/1000 cycles ) 6
Elongation at break ( % ) 40-80
Hardness - Rockwell M88
Izod impact strength ( J m-1 ) 85
Poisson's ratio 0.4
Tensile modulus ( GPa ) 2.4-2.6
Tensile strength ( MPa ) 70-95

Physical Properties

Density ( g cm-3 ) 1.37
Flammability V-0 @ 0.4mm
Limiting oxygen index ( % ) 34-41
Radiation resistance Good-Fair
Refractive index 1.65
Resistance to Ultra-violet Fair
Water absorption - equilibrium ( % ) 2.2
Water absorption - over 24 hours ( % ) 0.4-1

Thermal Properties

Coefficient of thermal expansion ( x10-6 K-1 ) 55
Heat-deflection temperature - 0.45MPa ( C ) >260
Heat-deflection temperature - 1.8MPa ( C ) 203
Lower working temperature ( C ) -110
Thermal conductivity @23C ( W m-1 K-1 ) 0.13-0.18
Upper working temperature ( C ) 180-220

Properties for Polyethersulfone Film

Property Value
Dielectric Constant @ 1MHz 3.7
Dielectric Strength @25µm thick kV mm-1 232
Dissipation Factor @1MHz 0.012
Elongation at Break % 20-150
Flammability VTM-0 @ 25µm
Heat-sealing Temperature C 259-287
Initial Tear Strength g µm-1 7.5-16.9
Permeability to Oxygen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.4
Permeability to Water @38C x10-13 cm3. cm cm-2 s-1 Pa-1 1200
Specific Heat kJ kg-1 K-1 1.1

Buy Polyethersulfone on-line

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

Choose a form to search our on-line catalog  

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