| abstract |
To provide a highly thermally conductive material, which is a highly thermally conductive material comprising an alumina fiber sheet and a resin, wherein the high thermal conductivity material contains 20 to 90% by mass of the above-mentioned alumina fiber sheet; and a method for producing the above-mentioned high thermally conductive material, It comprises: (1) a process of producing a fiber sheet containing an alumina source by using an electrospinning method or a dry spinning method using a dispersion liquid containing an alumina source and a water-soluble polymer as a spinning material, (2) using The step of firing the fiber sheet containing the alumina source to produce the alumina fiber sheet, and (3) the step of impregnating the alumina fiber sheet with a resin solution having a resin concentration of 10 mass % or less. |