ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Collection
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 235 (1996), S. 35-45 
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Ein Phenolharz-Polyurethan-Copolymeres wurde aus einem Phenolharz, einem geschützten Polyurethan und p-Toluolsulfonsäure hergestellt. Dieses Copolymere weist trotz großer Härte eine gute Verarbeitbarkeit (einschließlich Topfzeit und Reaktivität) auf. Die Synthese des Copolymeren wurde mit IR-Spektroskopie verfolgt. Es wurde gefunden, daß die Isocyanatgruppe des Polyurethans nach Abspaltung der Schutzgruppe mit der Hydroxygruppe des Phenolharzes reagierte. Glasfaserverstärkte Verbundwerkstoffe offenbarten bei SEM-Untersuchungen eine hervorragende Verbindung zwischen Faser und Matrix. Ein Überlappungspeak im DMA-Diagram wies auf Wechselwirkungen zwischen Phenolharz und Polyurethan hin, die die Härte des Phenolharzes verbessern.
    Notes: A phenolic resin/polyurethane copolymer was synthesized by reaction of a phenolic resin, a blocked-polyurethane and p-toluene sulfonic acid. The copolymer provides a good balance between the processability (including pot life, reactivity) and toughness. The reactions that proceeded during the synthesis of the copolymer was investigated by IR spectroscopy. It was found that blocked polyurethane reacted with the hydroxy group of the phenolic resin. Glass fiber-reinforced composites showed excellent bonding between fiber and matrix as revealed by SEM photographs. An overlap peak was found from the DMA diagram; it indicated that an interaction existed between phenolic resin and polyurethane and that improved the toughness of the phenolic resin.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...