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Polyetherimide (PEI; branded as Ultem [1]) is an amorphous, amber-to-transparent thermoplastic with characteristics similar to the related plastic PEEK.When comparing PEI to PEEK, the former is cheaper but has lower impact strength and a tighter temperature range.
Recycling codes on products. Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process.The presence on an item of a recycling code, a chasing arrows logo, or a resin code, is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.
Polyetherimide (PEI), produced by a novel nitro displacement reaction involving bisphenol A, 4, 4’-methylenedianiline and 3-nitrophthalic anhydride, has high heat distortion temperature, tensile strength and modulus. They are generally used in high performance electrical and electronic parts, microwave appliances, and under-the-hood ...
Polyetheretherketone (PEEK): strong, chemical- and heat-resistant thermoplastic; its biocompatibility allows for use in medical implant applications and aerospace moldings. It is one of the most expensive commercial polymers. Polyetherimide (PEI) (Ultem): a high-temperature, chemically stable polymer that does not crystallize
Polyetherimide (PEI), a thermoplastic similar to PEEK; Polyethylenimine (PEI), a type of water-soluble polymer; Other uses. Paul Ehrlich Institute, Germany; Pei language;
Chemical structure of Kapton, a polyimide. Polyimide (sometimes abbreviated PI) is a polymer containing imide groups belonging to the class of high-performance plastics.With their high heat-resistance, polyimides enjoy diverse applications in roles demanding rugged organic materials, such as high temperature fuel cells, displays, and various military roles.
A thermoplastic is a type of plastic that melts to a liquid when heated, and freezes to a solid when cooled sufficiently. Subcategories This category has the following 2 subcategories, out of 2 total.
A more durable alternative is to use a polyetherimide surface. [20] Researchers have devised a method to 3D-print polyimide material including Kapton. [21] The polyamic acid precursor to Kapton is mixed with an acrylate cross linker and photoinitiator that can form a gel when exposed to ultraviolet light during 3D printing.