Evonik VESTAKEEP® Film 0FH90 PEEK

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Evonik VESTAKEEP® Film 0FH90 PEEK (discontinued **)
Categories:	Polymer; Film; Thermoplastic; Polyketone; Polyetheretherketone (PEEK)
Material Notes:	VESTAKEEP® film 0FH90 is a cast film based on 100% unreinforced polyether ether ketone (PEEK). The film is amorphous with a matte/glossy surface finish. The material features low extrusion related internal stresses and is ideal to thermoform 3D parts from, e.g. small speaker membranes. Application examples: electrical insulation thermoformed thin parts loudspeaker membranes Important notice: Amorphous PEEK film undergoes crystallization at above its glass transition temperature around 150°C. This should be taken into account upon processing as well as in final applications. The crystallization can only be reversed by heating to the melt followed by quenching. VESTAKEEP® film properties include: High continuous use temperature Excellent chemical resistance Tough and impact resistant Low creep Low abrasion, low coefficient of friction Low water absorption Electrical insulation Low flammability Free of flame retardants, no halogens Approved for food contact Low weight Recyclable (neat PEEK resin) Stabile towards ionizing irradiation RoHS compliant Secondary processes: VESTAKEEP films can be processed by many secondary processes, e.g.: Die and water-jet cutting Surface treatment (corona, plasma, flame) Thermoforming Adhesive bonding Welding, sealing, printing Information provided by Evonik
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Physical Properties	Original Value	Comments

Density	1.26 g/cc @Thickness 0.0250 mm	ISO 1183

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	90.0 MPa @Thickness 0.0250 mm	100 mm/min; ISO 527-3
Tensile Strength, Yield	60.0 MPa @Thickness 0.0250 mm	100 mm/min; ISO 527-3
Elongation at Break	>= 150 % @Thickness 0.0250 mm	100 mm/min; ISO 527-3

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+15 ohm-cm	IEC 60093
Surface Resistance	1.00e+14 ohm	IEC 60093
	1.00e+15 ohm	Spec.; IEC 60093
Dielectric Constant	2.8 @Frequency 1e+6 Hz	IEC 60250
	2.8 @Frequency 50 Hz	IEC 60250
	2.9 @Frequency 1000 Hz	IEC 60250
Dielectric Strength	140 kV/mm @Thickness 0.125 mm	amorphous; IEC 60243-1
	190 kV/mm @Thickness 0.0750 mm	amorphous; IEC 60243-1
Dielectric Breakdown	13500 V @Thickness 0.0750 mm	amorphous; IEC 60243-1
	17500 V @Thickness 0.125 mm	amorphous; IEC 60243-1
Dissipation Factor	0.0030 @Frequency 1000 Hz	IEC 60250
	0.0050 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	175 V	100 drops value; IEC 60112
	200 V	CTI; IEC 60112

Thermal Properties	Original Value	Comments
Crystallization Temperature	>= 165 °C @Thickness 0.0250 mm	Cold onset
Glass Transition Temp, Tg	150 °C @Thickness 0.0250 mm

**
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PEVONIL203 / 196407

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