Thermal conductivity measurement of the epoxies and composite material for low temperature superconducting magnet design |
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Authors: | P. Zhang Y.J. Chen X.J. Ren A.B. Wu Y. Zhao |
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Affiliation: | aInstitute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China;bGE China Technology Center, Shanghai 201203, China |
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Abstract: | The thermal conductivities of solid materials were measured by a G-M cryo-cooler based apparatus in the temperature range of 2.6–21.0 K. The performance of this apparatus was verified by measuring the thermal conductivity of 304-stainless steel, and good reproducibility as well as accuracy was shown when compared with the certified values. The thermal conductivities of EC1017 and Stycast2850FT and a composite material were measured. Similar behavior to amorphous materials was shown for EC1017 and Stycast2850FT in that there was an apparent plateau, which could be ascribed to a very lower crystallinity of epoxy. An equivalent model was proposed to predict the thermal conductivity of the composite material. |
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Keywords: | Thermal conductivity Measurement Low temperature Epoxy Composite material |
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