Nr 1 Applikation note - NIST A4

2008-08-05 12:36 下载量：48

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Introduction In this application note an extruded PS sample certified by NIST has been tested with the Hot Disk Thermal Constants Analyser in order to compare the results with the results obtained with the methods used at other laboratories. By marking each side of each sample with “1” for low side and “2” for upper side, it was possible to test four permutations of the sample set-up and thus it could be possible to analyse possible differences between the upper side and the lower side of the samples as they were manufactured. Since the sample is formed by extrusion,it is assumed that the PS will have a higher density on the bottom side of the sample than the upper side and therefore different thermal properties.

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凯戈纳斯仪器商贸（上海）有限公司

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