Recent advantages in thermal analysis instrumentation |
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Authors: | Dr W -D Emmerich J Janoschek E Kaisersberger |
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Institution: | (1) Netzsch-Gerätebau Gmbh, Wittelsbacherstrasse 42, P.O. BOX 14 60, D-8672 Selb/Bavaria, FRG |
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Abstract: | Curing and decomposition of a phenolic resin is studied by simultaneous thermal analysis (STA) and mass spectrometry (MS) to get quantitative and qualitative information on the reactions. The influence of the heating rate and the curing mass loss of the same material is measured with a symmetrical micro thermobalance. A high temperature DSC apparatus is used to determine the specific heat of a glass ceramic. Poco graphite is used for expansion calibration measurements with a new dilatometer up to 2000 °C.
Zusammenfassung Mittels simultaner Thermoanalyse (STA) und Massenspektroskopie (MS) wurden Vernetzung und Zersetzung von Phenolharzen untersucht, um so quantitative und qualitative Erkenntnisse über die entsprechenden Reaktionen zu erlangen. Der Einfluß der Aufheizgeschwindigkeit und des Vernetzungsmassenverlustes desselben Stoffes wurde mit einer Mikrothermowaage gemessen. Zur Bestimmung der specifischen Wärme einer Glaskeramik wurde ein Hochtemperatur-DSC Gerät verwendet. Zu Ausdehnungskalibrationsmessungen bis zu 2000° mit einem neuen Dilatometer wurde Pocographit verwendet.
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