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  2. Polyethylenimine - Wikipedia

    en.wikipedia.org/wiki/Polyethylenimine

    The linear PEI is a semi-crystalline solid at room temperature while branched PEI is a fully amorphous polymer existing as a liquid at all molecular weights. Linear polyethyleneimine is soluble in hot water, at low pH, in methanol, ethanol, or chloroform.

  3. Polyetherimide - Wikipedia

    en.wikipedia.org/wiki/Polyetherimide

    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.

  4. High-performance plastics - Wikipedia

    en.wikipedia.org/wiki/High-performance_plastics

    Resulting operating temperatures might be between 200 °C in the case of PES to 260 °C in case of PEI or PAI. [7] The increase in temperature stability by incorporating aromatic units is due to the fact, that the temperature stability of a polymer is determined by its resistance against thermal degradation and its oxidation resistance.

  5. Thermoplastic - Wikipedia

    en.wikipedia.org/wiki/Thermoplastic

    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 ...

  6. Stanhope, PE Weather - Hourly Forecasts and Local Weather ...

    www.aol.com/weather/forecast/canada/prince...

    Get the Stanhope, PE local weather forecast by the hour and the next 10 days. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways ...

  7. Kapton - Wikipedia

    en.wikipedia.org/wiki/Kapton

    In isolation, Kapton remains stable across a wide range of temperatures, from 4 to 673 K (−269 to +400 °C). [5] [6]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·m −1 ·K −1.

  8. Puzzle solutions for Saturday, Nov. 30, 2024

    www.aol.com/news/puzzle-solutions-saturday-nov...

    Weather. Puzzle solutions for Saturday, Nov. 30, 2024. USA TODAY. November 30, 2024 at 2:12 AM. Note: Most subscribers have some, but not all, of the puzzles that correspond to the following set ...

  9. Polyimide - Wikipedia

    en.wikipedia.org/wiki/Polyimide

    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.

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