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PES Flakes

Polyethersulfone (PES) polymer flakes are small fragments of a high-performance engineering thermoplastic known for its exceptional durability and resistance to harsh environments. Available in 12 variations, PES can withstand high temperatures, oxidation and radiation, making it an ideal material for demanding applications. Its uses range from medical devices, where sterility and biocompatibility are crucial, to aerospace and automotive components that require robustness under extreme conditions. Additionally, PES’s excellent electrical properties make it suitable for electrical equipment, while its stability is advantageous in the creation of filtration membranes.
Formula: PES
Weight: 5000g
Molecular Weight: 48,000 g/mol
Colour: Natural
UOM Code: 226-097-39
SKU: 1000094316
Product Code: SU30-FK-000130
Technical Data Sheet
Safety Data Sheet
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Material Properties for Polymers

Chemical Resistance
Element Value
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
Element Value
Dielectric constant @1MHz 3.7
Dissipation factor @ 1MHz 0.003
Dielectric strength( kV mm⁻¹ ) 16
Volume resistivity( Ohmcm ) 10¹⁷
Physical Properties
Element Value
Flammability V-0 @ 0.4mm
Radiation resistance Good-Fair
Refractive index 1.65
Resistance to Ultra-violet Fair
Limiting oxygen index( % ) 34-41
Water absorption - equilibrium( % ) 2.2
Water absorption - over 24 hours( % ) 0.4-1
Density( gcm⁻³ ) 1.37
Mechanical Properties
Element Value
Hardness - Rockwell M88
Poisson's ratio 0.4
Elongation at break( % ) 40-80
Tensile modulus( GPa ) 2.4-2.6
Izod impact strength( J m⁻¹ ) 85
Abrasive resistance - ASTM D1044( mg/1000 cycles ) 6
Tensile strength( MPa ) 70-95
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 260
Heat-deflection temperature - 1.8MPa( C ) 203
Lower working temperature( C ) -110
Upper working temperature( C ) 180-220
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.13-0.18@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 55
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