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Thermal diffusivity measurement of polyethylene melt by a new temperature wave method

  • Polymers
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Abstract

Thermal diffusivity of high density polyethylene (PE) has been measured by a new a. c. Joule-heating method. The diffusivity was determined at various temperatures between room temperature and above melting point in heating and cooling processes. This method is based on the phase shift of temperature waves across film sample, so that it offers several advantages, e.g., easy measuring in polymer melts.

Zusammenfassung

Mittels einer neuen Methode wurde die Temperaturleitfähigkeit von hochdichtem Polyethylen (PE) vermessen. Die Leitfähigkeit wurde bei verschiedenen Temperaturen zwischen Raumtemperatur und Temperaturen oberhalb des Schmelzpunktes, sowohl beim Erhitzen als auch beim Abkühlen bestimmt. Diese Methode basiert auf der Phasenverschiebung von Temperaturwellen durch eine Filmprobe hindurch, was verschiedene Vorteile bietet, wie z.B. leichte Messung in Polymerschmelzen.

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Hashimoto, T., Tsuji, T. Thermal diffusivity measurement of polyethylene melt by a new temperature wave method. Journal of Thermal Analysis 40, 721–726 (1993). https://doi.org/10.1007/BF02546644

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  • DOI: https://doi.org/10.1007/BF02546644

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