Thermal Conductivity of Various CFRPs from 100 mK to 20 K

Carbon-fiber-reinforced polymers (CFRPs) are among the most promising structural materials for aerospace applications, particularly for systems operating at cryogenic temperatures, where high strength, low mass, and low thermal conductivity are essential. In this work, the thermal conductivity of a set of CFRP samples: T300 (67% 0\(^\circ \)), T700 (62% 0\(^\circ \)), HS40 (67% 0\(^\circ \)/0\(^\circ \)/0\(^\circ \)/90\(^\circ \)), HS40 (62% 0\(^\circ \)/0\(^\circ \)/0\(^\circ \)/90\(^\circ \)), M55J (0\(^\circ \)), HS40 (67% 0\(^\circ \)), HS40 (62% 0\(^\circ \)), IMA (0\(^\circ \)), and IMA (90\(^\circ \)), was measured over the temperature range 100 mK to 20 K. Thermal conductivities were extracted using a new analysis method developed. The resulting temperature-dependent behavior for each sample is presented and compared with the existing literature.