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Polyimides (PI) and fluoropolymers like polytetrafluoroethylene (PTFE), perfluoroalkoxy alkanes (PFA), and fluorinated ethylene-propylene (FEP) are typically used for insulation in the aerospace industry.
A substance that prevents the free flow of electric current is known as an electrical insulator. The electrons in the insulator’s atoms are tightly bound and unable to move.
Electric current flows more easily through conductors and semiconductors made of other materials. Insulators can be either organic or inorganic, and there are many different kinds of them.
Polymers are found in virtually every organic material used for insulation. Almost always, the insulating materials for aircraft wiring are organic.
Fiber glass and a polymer, such as Poly (vinyl chloride) and silicon rubber, are the only exceptions. However, their use in the majority of aircraft is currently relatively limited.
Additionally, polymers may sometimes be combined with inorganic fillers. Ceramics are utilized as insulation in some other wiring applications. Actually, the “chain of atoms” is made up of small groups of atoms that have a regular structure that repeats itself many times.
The majority of the insulating materials that are currently utilized for wiring are synthetic, with a few naturally occurring polymers being utilized for insulation purposes.
Due to their structure and composition, organic polymers almost always are insulators, with a band gap of at least three eV. For more information, see the section below on the physical basis of insulators.
The Global Aerospace Electrically insulating materials market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
When it comes to meeting aerospace electrically insulating materials, DuPont can make things easier. This is due to the fact that they offer over 400 pre-approved systems that meet IEC standards and have been approved by Underwriters Laboratories (UL).
A wide variety of DuPont electrical insulation materials are included in these systems, including: thermoplastic resins, pressboard products, films, and aramid papers We are able to satisfy virtually all of the electrical insulation requirements of current transformers, motors, relays, switches, sensors, and encapsulated coils and components thanks to our portfolio of high-performance materials.
The majority of our electronics insulation products are listed UL 94V-0 or VTM-0 for the flammability rating of plastics.
OEM electronics insulation products require stringent flame retardant specifications to prevent the spread of fire inside enclosures. Even the more stringent UL 94 5VA & 5VB flammability ratings are satisfied by some of these items.
Insul-Fab offers electrical insulation materials, a variety of material options, and fabrication expertise to original equipment manufacturers for both types of applications. Our diverse cutting, forming, routing, and machining equipment can work with large or small volumes.
