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Grade: DuPont™ Kapton® CRC
Formula: PI
Form: Foil/Film/Sheet
Material: Polyimide (PI)
CAS Number: 60842-76-4
Commodity: Polymers
Thickness: 0.025mm
Kapton® CRC Polyimide Film is a high-performance polyimide film engineered for use in radiation-intensive environments requiring long-term dimensional stability, excellent dielectric properties, and high temperature resistance. It is tailored for cryogenic and radiation-curing (CRC) applications, combining Kapton’s inherent thermal resilience (−269°C to +400°C) with enhanced structural performance under high-dose radiation. Industries relying on this material include aerospace, nuclear instrumentation, microelectronics, and high-reliability flexible circuits. Notably, its role in protecting circuit board “golden fingers,” insulation in space probes, and dielectric substrates in biosensors highlights its adaptability. In EEG applications, electrodes sandwiched in Kapton CRC Polyimide Film demonstrate low impedance and biocompatibility, enabling stable bio-signal acquisition. With excellent flame retardance and resistance to solvents and UV radiation, Kapton CRC is a critical enabler for robust, lightweight solutions in precision sensing, high-temperature circuitry, and extreme-environment materials research.
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Tolerances

Foil
Thickness ±20%

Material Properties for Polymers

Chemical Resistance
Element Value
Acids - concentrated Poor
Acids - dilute Fair
Alcohols Poor
Alkalis Poor
Aromatic hydrocarbons Good
Greases and Oils Good
Halogenated Hydrocarbons Good
Halogens Fair
Ketones Good
Mechanical Properties
Element Value
Coefficient of friction 0.42
Hardness - Rockwell E52-99
Elongation at break( % ) Aug-70
Tensile modulus( GPa ) 2.0 – 3.0
Izod impact strength( J m⁻¹ ) 80
Tensile strength( MPa ) 70-150
Electrical Properties
Element Value
Dielectric constant @1MHz 3.4
Dissipation factor @ 1kHz 0.0018
Dielectric strength( kV mm⁻¹ ) 22
Surface resistivity( Ohm/sq ) 10¹⁶
Volume resistivity( Ohmcm ) 10¹⁸
Physical Properties
Element Value
Flammability V0
Radiation resistance Good
Refractive index 1.66
Resistance to Ultra-violet Poor
Limiting oxygen index( % ) 53
Water absorption - over 24 hours( % ) 0.2-2.9
Density( gcm⁻³ ) 1.42
Thermal Properties
Element Value
Heat-deflection temperature - 1.8MPa( C ) 360
Lower working temperature( C ) -270
Upper working temperature( C ) 250-320
Specific heat( J K⁻¹ kg⁻¹ ) 1090
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.1-0.35@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 30-60

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