PES Disk

PES Disk, made from polyethersulfone, offers excellent thermal stability, chemical resistance, and electrical insulation properties in a precisely machined circular form. Its toughness, dimensional stability, and resistance to hydrolysis make it suitable for use in clean energy, biomedical, and separation technologies. Applications include insulating components in high-temperature electronics, membranes for fuel cells and water purification, and precision supports for biomedical devices. Research uses PES disks for studies in gas separation, membrane modification, and stability testing under ozone or radiation exposure. The disk format ensures reproducible geometry, enabling integration into filtration modules, experimental sensor platforms, and electrochemical studies. Its balance of machinability, stability, and performance under aggressive conditions makes PES disks a critical material for scientific testing and advanced industrial devices. With their combination of structural reliability and functional versatility, PES disks contribute significantly to innovation in electronics, energy systems, and life science technologies.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Disc

Thickness		±20%

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