[13a-PB3-1~9] 22.1 Joint Session M "Phonon Engineering"

[13a-PB3-4] Influence of polymer addition and stretching on thermal conductivity of CNT yarn

〇Takahiro Yamamoto¹, Masakazu Nakamura¹, Hiroaki Benten¹, Hirotaka Kojima¹, Mincherl Jung^1,2, Naohumi Okamoto¹, Ryo Abe¹, Yuki Sekimoto¹ (1.NAIST, 2.Tukuba Univ.)

Keywords:Thermal conductivity, Carbon nano tube

The optimum types of raw materials and binders that have the highest thermal conductivity of CNT (carbon nanotube) yarn were derived, and then the molecular weight dependence of the binder was investigated. In addition, to investigate the effect of drawing on CNT spun yarn as another method, a device that can measure conductivity in situ in a tensile test was developed. The sample was prepared by a wet spinning method. The measured thermal conductivity was determined from the product of bulk density, specific heat capacity and thermal diffusivity.