Abstract
Eccosorb CR-124 is a castable iron-loaded epoxy resin with excellent absorption properties for electromagnetic waves in the GHz range. It is commonly used in low temperature instruments to absorb thermal radiation. The specific heat c (T) of Eccosorb CR-124 was measured between 800 mK and 6 K with the heat pulse method. The results were fitted to the function c (T) = (0.132 ± 0.003) · T + (0.0053 ± 0.0003) · T3 J kg- 1 K- 1, with T being the temperature in Kelvin. In addition, the thermal diffusivity D (T) of Eccosorb CR-124 was determined. At a temperature of 2.3 K, a peak is observed in D (T). Consequently, the thermal conductivity λ (T) of Eccosorb CR-124 features two distinct regimes. Below 2.3 K, it fits the function λ (T < 2.3 K) = (0.0038 ± 0.0003) · T2 ± 0.1 W m- 1 K- 1. Above 2.3 K, it fits the function λ (T > 2.3 K) = (0.0057 ± 0.0004) · T1.4 ± 0.04 W m- 1 K- 1.
Original language | English (US) |
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Pages (from-to) | 421-424 |
Number of pages | 4 |
Journal | Cryogenics |
Volume | 49 |
Issue number | 8 |
DOIs | |
State | Published - Aug 2009 |
Keywords
- A. Epoxy
- C. Heat capacity
- C. Thermal conductivity
- F. RF applications
ASJC Scopus subject areas
- Materials Science(all)
- Physics and Astronomy(all)