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Key Features & Applications of Polyimide (PI)

Polyimides (PI) - Popular Applications

Polyimide (also known as PI or Kapton) is widely employed for electronic applications in aerospace and automotive industry due to its excellent mechanical strength, electrically insulating properties and thermal stability. Re-visit the sub-areas of applications of PI polymer in electronic/electrical segments.


Popular Applications

Polyimide applications in electronics mainly consist of wafer carriers and guides, test holders, chip trays, hard disk drive components, electrical connectors, coil bobbins, wire insulators and digital copier and printer components for the electronics market.

In recent years, polyimide-based sensor materials have received much attention due to their:

  • Simple preparation method
  • Chemical inertness
  • Mechanical and thermal stability, and
  • High biocompatibility

PI film with excellent physical, electrical, and mechanical properties over a wide temperature range (from -269°C to 400°C) has opened up new design and application areas to plastic films.

PI film is ideal for insulating circuit boards, high-temperature powder coating, and transformer manufacturing due to the desirable properties of high temperature resistance and good dimensional stability.

Polyimide films are widely used as a dielectric substrate in flexible solar cells

Polyimide films are widely used as a dielectric substrate in flexible solar cells for their high thermal stability, toughness and flexibility. PI films are used to produce solar cells with maximum efficiency and yields and as substrates in thin film a-Si and CIGS photovoltaic applications due to its high thermal stability.

Classification of Optical Polymer Films
Classification of Optical Polymer Films

Thermoset polyimide tubing and coated wire is a highly versatile product, with a wide range of uses in high-performance medical devices. Typical medical applications include cardiovascular catheters, retrieval devices, push rings, marker bands, angioplasty, stent delivery devices, neurological devices, electrical insulator applications, and drug delivery systems.

Polyimide brings the following benefits to medical tubing: flexibility, high tensile strength, biocompatibility, low friction, transparency, tight tolerances, thin walls, smooth surface, pushability, and column strength. Polyimide is USP Class VI compliant and meets ISO 10993 biocompatibility requirements for a Class III device. Polyimide may be sterilized via gamma, EtO, and e-beam sterilization methods.



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