The specific heat and thermal conductivity of Eccosorb CR-124 between 800 mK and 6 K

Patrick Wikus; Kevin A. McCarthy; Scott A. Hertel; Yelena S. Bagdasarova; Enectalí Figueroa-Feliciano; Steven W. Leman; John M. Rutherford; Sarah N. Trowbridge; Scott W. Vasquez

doi:10.1016/j.cryogenics.2009.06.002

The specific heat and thermal conductivity of Eccosorb CR-124 between 800 mK and 6 K

Patrick Wikus^*, Kevin A. McCarthy, Scott A. Hertel, Yelena S. Bagdasarova, Enectalí Figueroa-Feliciano, Steven W. Leman, John M. Rutherford, Sarah N. Trowbridge, Scott W. Vasquez

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

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) · T^{2 ± 0.1} W m^{- 1} K^{- 1}. Above 2.3 K, it fits the function λ (T > 2.3 K) = (0.0057 ± 0.0004) · T^{1.4 ± 0.04} W m^{- 1} K^{- 1}.

Original language	English (US)
Pages (from-to)	421-424
Number of pages	4
Journal	Cryogenics
Volume	49
Issue number	8
DOIs	https://doi.org/10.1016/j.cryogenics.2009.06.002
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)

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@article{29422a4528264ac09f26598acf23e699,

title = "The specific heat and thermal conductivity of Eccosorb CR-124 between 800 mK and 6 K",

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.",

keywords = "A. Epoxy, C. Heat capacity, C. Thermal conductivity, F. RF applications",

author = "Patrick Wikus and McCarthy, {Kevin A.} and Hertel, {Scott A.} and Bagdasarova, {Yelena S.} and Enectal{\'i} Figueroa-Feliciano and Leman, {Steven W.} and Rutherford, {John M.} and Trowbridge, {Sarah N.} and Vasquez, {Scott W.}",

note = "Funding Information: The authors would like to thank William W. Forbes for his help with the preparation of the experimental setup. This work has been conducted under NASA grant NNX07AK52G. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.",

year = "2009",

month = aug,

doi = "10.1016/j.cryogenics.2009.06.002",

language = "English (US)",

volume = "49",

pages = "421--424",

journal = "Cryogenics",

issn = "0011-2275",

publisher = "Elsevier Limited",

number = "8",

}

The specific heat and thermal conductivity of Eccosorb CR-124 between 800 mK and 6 K. / Wikus, Patrick; McCarthy, Kevin A.; Hertel, Scott A.; Bagdasarova, Yelena S.; Figueroa-Feliciano, Enectalí; Leman, Steven W.; Rutherford, John M.; Trowbridge, Sarah N.; Vasquez, Scott W.

In: Cryogenics, Vol. 49, No. 8, 08.2009, p. 421-424.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - The specific heat and thermal conductivity of Eccosorb CR-124 between 800 mK and 6 K

AU - Wikus, Patrick

AU - McCarthy, Kevin A.

AU - Hertel, Scott A.

AU - Bagdasarova, Yelena S.

AU - Figueroa-Feliciano, Enectalí

AU - Leman, Steven W.

AU - Rutherford, John M.

AU - Trowbridge, Sarah N.

AU - Vasquez, Scott W.

N1 - Funding Information: The authors would like to thank William W. Forbes for his help with the preparation of the experimental setup. This work has been conducted under NASA grant NNX07AK52G. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.

PY - 2009/8

Y1 - 2009/8

N2 - 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.

AB - 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.

KW - A. Epoxy

KW - C. Heat capacity

KW - C. Thermal conductivity

KW - F. RF applications

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U2 - 10.1016/j.cryogenics.2009.06.002

DO - 10.1016/j.cryogenics.2009.06.002

M3 - Article

AN - SCOPUS:68049094984

VL - 49

SP - 421

EP - 424

JO - Cryogenics

JF - Cryogenics

SN - 0011-2275

IS - 8

ER -

The specific heat and thermal conductivity of Eccosorb CR-124 between 800 mK and 6 K

Abstract

Keywords

ASJC Scopus subject areas

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