![]() Kapton insulation ages poorly: an FAA study shows degradation in hot, humid environments or in the presence of seawater. The thermal conductivity of Kapton at temperatures from 0.5 to 5 Kelvin is rather high for such low temperatures, κ = 4.638×10 −3 T 0.5678 W Kapton remains stable (in isolation) across a wide range of temperatures, from 4 to 673 K (−269 to +400 ☌). Kapton E offers reduced coefficient of thermal expansion (CTE), reduced moisture absorption, and reduced coefficient of hygroscopic expansion (CHE) compared to Kapton H. The BPDA component adds greater dimensional stability and flatness in flexible circuitry applications. Kapton E is a mix of two dianhydrides, PMDA and biphenyltetracarboxylic acid dianhydride (BPDA), and two diamines, ODA and p-phenylenediamine (PPD). It is produced from the condensation of pyromellitic dianhydride (PMDA) and 4,4'-oxydiphenylamine (ODA). The chemical name for Kapton K and HN is poly (4,4'-oxydiphenylene-pyromellitimide). The ring closure is carried out at high temperatures of 470–570 K (200–300 ☌). The intermediate polymer, known as a poly(amic acid), is soluble because of strong hydrogen bonds to the polar solvents usually employed in the reaction. ![]() Kapton synthesis is an example of the use of a dianhydride in step polymerization. The name Kapton is a registered trademark of E. Kapton remains manufactured by DuPont to this day. Kapton was invented by DuPont in the 1960s. Its favorable thermal properties and outgassing characteristics result in its regular use in cryogenic applications and in situations where high vacuum environments are experienced. Kapton is used in electronics manufacturing, space applications, with x-ray equipment, and in 3D printing applications. Invented by the DuPont Corporation in the 1960s, Kapton remains stable (in isolation) across a wide range of temperatures, from 4 to 673 K (−269 to +400 ☌). Kapton is a polyimide film used in flexible printed circuits ( flexible electronics) and space blankets, which are used on spacecraft, satellites, and various space instruments. In flight applications, polyimide tape has all the same uses as bare Kapton® film but with the convenience of quick attachment associated with tapes.Kapton insulating pads for mounting electronic parts on a heat sink Since the Kapton® tape is electrically insulative and low outgassing, it is an ideal material as a harness wrap to protect electrical wires from abrasion and electrostatic discharge (ESD) events. One of the primary uses of polyimide tape is for wire harness applications. ![]() ![]() Polyimide tape often sees use in Ground Systems Engineering (GSE) applications like temporary / permanent tiedowns, blanket closeouts, FOD control, harness wrap, and thermal radiation sinks. Our polyimide tape is the go-to material in aerospace integration and test environments. Its material properties with respect to mechanical strength, vacuum compatibility, electrical isolation, optical clarity, and high emissivity make the polyimide tape ideal for a host of applications. The space flight proven tape is widely used in the aerospace industry due to its wide operation temperature range, superior radiation resistance, and electrical resistant properties.ĭunmore’s Kapton® tape is the standard for flight and ground applications in the aerospace industry. Our Kapton® tape consists of polyimide film with a space grade, non-silicone pressure sensitive adhesive. Since 1985 Dunmore Aerospace has been providing material solutions for the space industry.
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