Rides, M; Morikawa, J*; Hälldahl, L*; Hay, B*; Lobo, H*; Dawson, A (2008) Intercomparison of thermal conductivity and thermal diffusivity measurements of polymers. In: Proceedings of the Polymer Processing Society 24th Annual Meeting - PPS-24, 15-19 June 2008, Salerno, Italy.

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Abstract

Heat transport properties data on plastics are essential for the design of many plastics products. Such data are essential for process design where reliable data are required, for example, to minimise warpage and internal stresses in injection moulding. Transient methods are particularly suited for measuring heat transport properties of polymers at elevated temperatures due to their relatively short test duration, compared with steady-state methods, thereby reducing problems associated with specimen degradation. An intercomparison on the measurement of thermal conductivity and thermal diffusivity of polymethyl methacrylate (PMMA) samples using both transient and steady-state techniques has been carried out to quantify the precision of such data. The methods used in the intercomparison include the transient plane heat source (Hot Disk ®), temperature wave analysis, laser flash, line source probe and heat flow meter. Results indicate a variation in measured values of approximately ± 10%.

Item Type:	Conference or Workshop Item (UNSPECIFIED)
Keywords:	plastics, thermal conductivity, thermal diffusivity, intercomparison, PMMA
Subjects:	Advanced Materials Advanced Materials > Polymer Rheology
Last Modified:	02 Feb 2018 13:15
URI:	http://eprintspublications.npl.co.uk/id/eprint/4170

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