We measured the expansion coecient of glass-ยฎbre reinforced nylon as a function of temperature between 4.2 and 300 K. The linear thermal expansion is about half that of unยฎlled nylon throughout the temperatures investigated. The thermal conductivity in the 0.2ยฑ5 K temperature range is very close to
Thermal expansion and thermal conductivity of Torlon at low temperatures
โ Scribed by G Ventura; G Bianchini; E Gottardi; I Peroni; A Peruzzi
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 67 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0011-2275
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โฆ Synopsis
We measured the expansion coefficient of Torlon 4203 (polyamide-imide) as a function of temperature between 4.2 and 295 K. The thermal expansion is lower than that of most polymers. The thermal conductivity k between 0.1 and 5 K was also measured: below 1 K, a quadratic dependence on temperature of k was found, as predicted by the tunnelling model, while the behaviour shown by our data above 1 K suggests the presence of a plateau.
๐ SIMILAR VOLUMES
AN apparatus for calibrating thermocouples from 4 to 300ยฐK is described. It has been used to obtain a detailed calibration table of the thermoelectric power and potential difference for constantan, gold-cobalt (gold-2.1 atomic per cent cobalt), and 'normal' silver (silver-0.37 atomic per cent gold)