Library

feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
  • 1
    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: 2,4-Toluylendiisocyanat, 2-Hydroxyethylmethacrylat und Ethandiol wurden in einer zweistufigen Reaktion zu einem Urethan-Methacrylat umgesetzt, welches unter Verwendung von Dibenzoylperoxid/N,N′-Dimethylanilin in Gegenwart verschiedener Konzentrationen von Methylmethacrylat oder Styrol ausgehärtet wurde. Dabei wurde ein Anstieg der Gelierungszeit mit zunehmender Comonomerkonzentration und abnehmender Initiatorkonzentration beobachtet. Die thermogravimetrische Analyse zeigt im Temperaturbereich 230-500°C unter Stickstoff einen zweistufigen Abbau der gehärteten Harze. Ihre thermische Stabilität hängt von der Art und Konzentration des Comonomeren ab.
    Notes: Urethane methacrylate monomer (UMA) containing methacryloyl group was prepared from toluylene diisocyanate (TDI), 2-hydroxyethyl methacrylate (HEMA), and ethylene glycol by a two step reaction. Curing was investigated using benzoyl peroxide and N,N-dimethylaniline as initiator system. The effect of concentration of initiator and reactive diluents, i.e., methyl methacrylate and styrene, on gel point was determined. An increase in gel time was observed by increasing the concentration of reactive diluent or decreasing the concentration of initiator. In TG traces (recorded in nitrogen atmosphere) of cured resins two step decomposition was observed in the temperature range of 230 to 500°C. The thermal stability of copolymers was influenced by the nature and content of reactive diluent.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...