Polyetherimide

Polyetherimide

Polyetherimide (PEI) is an amorphous, amber-to-transparent thermoplastic with similar characteristics to PEEK's. Relative to PEEK, it is cheaper, but less temperature-resistant, and lower in impact strength. It is prone to stress cracking in chlorinated solvents. It is available under the tradename Ultem, a registered trademark of SABIC Innovative Plastics, the principal developer and manufacturer.

tructure

The molecular formula of PEI's repeat unit is C37H24O6N2

Properties

The glass transition temperature of PEI is 216 °C. Its amorphous density at 25 °C is 1.27 g/cc. It is prone to stress cracking in chlorinated solvents. Its molecular weight of repeat unit: 592 g/mol.

ee also

* PEEK


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • polyetherimide — noun An amorphous, amber, transparent, high performance thermoplastic …   Wiktionary

  • Ultem — is a family of polyimide thermoplastic resins, of type amorphous polyetherimide. Ultem is a registered trademark of SABIC Innovative Plastics the principal developer and manufacturer. Ultem resins are used in medical and chemical instrumentation …   Wikipedia

  • SABIC — Infobox Company company name = Saudi Basic Industries Corp. company company type = Public company slogan = Sharing Our Futures foundation = 1976 location = Riyadh, Saudi Arabia key people = Prince Saud Bin Thunayan Al Saud, Chairman Mohammed Al… …   Wikipedia

  • Plastic — is the general common term for a wide range of synthetic or semisynthetic organic solid materials suitable for the manufacture of industrial products. Plastics are typically polymers of high molecular weight, and may contain other substances to… …   Wikipedia

  • Thermoplastics — A thermoplastic is a plastic that melts to a liquid when heated and freezes to a brittle, very glassy state when cooled sufficiently. Most thermoplastics are high molecular weight polymers whose chains associate through weak Van der Waals forces… …   Wikipedia

  • Pei — or Pei may refer to: Places Prince Edward Island, a province of Canada Pei, Tibet, a town in Tibet Pei County (沛县), a county in Xuzhou, Jiangsu, China People I. M. Pei (貝聿銘) (born 1917), a Chinese American architect Mario Pei (1901–1978), an… …   Wikipedia

  • Polysulfone — repeating unit. Polysulfone describes a family of thermoplastic polymers. These polymers are known for their toughness and stability at high temperatures. They contain the subunit aryl SO2 aryl, the defining feature of which is the sulfone group …   Wikipedia

  • Kapton — Imidgruppe Wärmeleitpads aus Kaptonfolie, Dicke ca. 0,05 mm Polyimid (Kurzzeichen PI) ist ein Hochleistungskunststoff, dessen wichtigstes Strukturmerkma …   Deutsch Wikipedia

  • Kunststoff — Stäbchenmodell des Polypropylens, Kohlenstoff blau – Wasserstoff grau Als Kunststoff (organisches Polymer) (umgangssprachlich Plastik, Plast oder Plaste) bezeichnet man einen Festkörper, dessen Grundbestandteil synthetisch oder halbsynthetisch… …   Deutsch Wikipedia

  • Poliimid — Imidgruppe Wärmeleitpads aus Kaptonfolie, Dicke ca. 0,05 mm Polyimid (Kurzzeichen PI) ist ein Hochleistungskunststoff, dessen wichtigstes Strukturmerkma …   Deutsch Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”