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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 1 (1970), S. 137-142 
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Investigations with regard to the effect of Trichlormonofluormethan (refrigerant R 11) on modified polystyrenesDue to the results of simple investigations it is being tried to obtain quantitative statement concerning the damage of some modified types of polystyrene caused by R 11. Furthermore the effectiveness of various protective measures proposed against the aggressive influence will be given an expert opinion.Discussing the testing procedures critically it is found that in spite of the deviations of stress conditions of polystyrenes foamed with polyurethane, as they exist in practice, the resistance of the modified polystyrenes against R 11 is quite evident what especially in connection with economy can be of importance.
    Notes: Anhand der Ergebnisse einfacher Untersuchungen wird versucht, eine quantitative Aussage über die Schädigung einiger modifizierter Polystyrol-Typen durch Trichlormonofluormethan (R 11) zu gewinnen. Weiterhin wird die Wirksamkeit verschiedener vorgeschlagener Schutzmaßnahmen gegen die aggressive Einwirkung betrachtet.Bei kritischer Erörterung der Untersuchungsverfahren wird festgestellt, daß trotz Abweichungen von den in der Praxis vorliegenden Beanspruchungsverhältnissen bei Polyurethan-beschäumten Polystyrolen ein anschauliches Bild über die Resistenz der modifizierten Polystyrole gegen R 11 entsteht, das insbesondere im Zusammenhang mit Wirtschaftlichkeits-Betrachtungen von Bedeutung sein kann.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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