Polyimide (PI) film is a strong, flexible polymer known for its excellent thermal stability, mechanical strength, and electrical insulation properties, making it ideal for demanding applications like aerospace, electronics, and high-temperature insulation. It can withstand extreme temperatures and is resistant to abrasion and chemicals, with common brand names including Kapton® and Apical™.
 

Key properties and features

• Thermal stability:

  Can withstand a wide range of temperatures, from cryogenic conditions up to 400∘C400 raised to the composed with power cap C400∘𝐶 (752∘F752 raised to the composed with power cap F752∘𝐹). 

• Electrical insulation:

  A high-performance dielectric material that can be used in high-voltage environments and is often resistant to corona discharge. 

• Mechanical strength:

  Offers excellent flexibility, durability, and resistance to tearing, abrasion, and other mechanical stresses. 

• Chemical resistance:

  Remains stable and strong when exposed to a variety of chemicals. 

• Dimensional stability:

  Maintains its shape and form even when subjected to wide temperature fluctuations. 

Common applications

• Aerospace:

  Used in multi-layer insulation blankets, wiring, and other components that must perform reliably in extreme environments. 

• Electronics:

  Found in flexible circuits, insulating tapes, and protective films for display screens, such as mobile phones and LCD TVs. 

• Heating elements:

  Used to create lightweight, uniform heating elements for various applications. 

• High-performance tapes:

  Engineered for use in pressure-sensitive tapes that require superior film attributes. 

• High-speed communications:
  Modified polyimide films are essential for 5G antennas and other high-frequency applications to minimize signal loss.