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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 158 (1958), S. 47-49 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zusammenfassung Es wurde mit Hilfe derSaunders undWard-Apparatur das Erstarren von Klebstofflösungen, z. B. Gelatine, Kasein, Harnstoff-Formaldehyd, Resorcinal-Formaldehyd, Tannin-Formaldehyd verfolgt. Die Form der Kurven zeigt, daß der Erstarrungsvorgang vom Typ des Klebstoffs abhängt. Der Einfluß der Temperatur beim Harnstoff-Formaldehyd zeigt, daß die Gelatinierungszeit für jede 5°C Temperaturerhöhung etwa auf die Hälfte sinkt. Die Druckfestigkeit der verfestigten Gele wurde ebenfalls untersucht.
    Notes: Summary The development of rigidity in adhesive solutions, viz. gelatin, casein, urea-formaldehyde, resorcinalformaldehyde and tannin formaldehyde, was followed with the help of theSaunders andWard apparatus. The shape of the curves shows that the development of rigidity differs with the type of adhesive. The influence of temperatures was also studied with ureaformaldehyde, the „gelation time“ is almost halved for every 5°C rise of temperature. Finally the compressive strength of the set gels is also reported.
    Type of Medium: Electronic Resource
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