KAPTON®: High temperature polyimide films
KAPTON® polyimide film is a registered trade mark of Du Pont.
KREMPEL is the authorised distributor for KAPTON® for Germany and Austria.
Please submit your detailed inquiry to our "Electrical insulation materials“ division which will provide you with comprehensive information and technical data originating from Du Pont.
Advantages
KAPTON® polyimide film, manufactured by Du Pont, exhibits many desirable characteristics otherwise not found in this unique constellation with other polymer film materials.
- KAPTON® can be used briefly under extreme temperature conditions ranging from -269 °C to +400 °C. It will tolerate temperatures up to +230 °C in continuous operation. *1)
- KAPTON® is flame retardant, self-extinguishing and begins to char only at 800 °C.
- KAPTON® has no melting point.
- KAPTON® is chemically inert to a high degree, and has no known organic solvent.
- KAPTON® is highly resistant to ionising radiation.
- KAPTON® is the only known film material which is stable with respect to corona discharge (for type CR).
*1) KAPTON® has already proved to give successful performance in applications involving ambient temperatures ranging from -269 °C to +400 °C, but complete data on its behaviour under such extreme conditions is not yet available.
The ability to retain its excellent chemical, mechanical and electrical properties over a wide temperature range makes KAPTON® suitable for many constructional and other applications. KAPTON® polyimide film is especially suitable for applications in which high operating temperatures are encountered, where other plastic film materials fail.
Structure
KAPTON® polyimide film is produced by poly-condensation of an aromatic di-anhydride with an aromatic diamine. The chemical reaction produces a crystalline structure and thermal conversion gives an amorphous film structure. Furthermore, special production methods starting with the base material permit adjustment of the properties to suit various applications.
Adaptation of KAPTON® characteristics by
- antistatic treatment
- high thermal conductivity
- excellent low temperature performance
- stable in the face of corona discharges
- colour pigmentation is possible
- can be made electrically conducting with filler substances
The KAPTON® range of products.
KAPTON® is a technically unique film material for many applications on account of its excellent properties.
KAPTON® types and their application fields
| Type | Characterisation | Application |
| KAPTON® standard types | ||
| KAPTON® HN | Polyimide basic film | Insulation for wires, conductors, cables, windings, motor slots, solenoids, transformers and capacitors |
| KAPTON® FN | Polyimide film with heatsealable TEFLON® FEP coating | Insulation of high temperature resistant wires, cables and ribbon cables; covering tapes |
| KAPTON® VN | Polyimide film with particularly good dimensional stability | For closer tolerances than type HN |
| KAPTON®-special types | ||
| KAPTON® CR | Corona-resistant polyimide film | Insulation of conductors and cables - especially in high duty electrical systems |
| KAPTON® FCR | KAPTON® CR with heat sealable TEFLON® FEP coating | Insulation of conductors and cables - especially in high duty electrical systems |
| KAPTON® MT | Polyimide film with high thermal conductivity | Motor winding insulation, supporting film for flexible base materials |
| KAPTON® FMT | KAPTON® MT with heat sealable TEFLON® FEP coating | Heater elements |
| KAPTON® HPP-ST | Polyimide film with high dimensional stability and surface treated for good bonding capability | Laminate production and special applications with high demands on dimensional stability |
| KAPTON® KJ | Thermoplastic polyimide film | Adhesive film for high temperature applications, e.g. insulations in aviation and space travel, laminates with glass/ceramics |
| KAPTON® HKJ | Polyimide base film HN with KJ-coating on one or both sides (heat sealable) | Adhesive film for high temperature applications, e.g. insulations in aviation and space travel, laminates with glass/ceramics, thick KAPTON® laminates |
| KAPTON® MTB | Black polyimide film with high thermal conductivity and very good bonding characteristics | Loudspeaker coils, insulation applications involving difficult bonding operations |
| KAPTON® BCL-Y | pigmentierte Polyimidfolie, bedruckbar | Bar code labels |
| KAPTON® JP | Mouldable polyimide film | Moulded parts, loudspeaker cones, diaphragms in automobiles |
| KAPTON® HPP-A | Amorphous polyimide film with good moulding capability | Insulating caps and moulded insulating parts |
In addition to the types listed in the table, further special types exist such as KAPTON® polyimide films for electronic engineering and low-reflection KAPTON® polyimide films for space travel.
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