High Anisotropic Thermal Conductivity, Long Durability Form-Stable Phase Change Composite Enhanced by a Carbon Fiber Network Structure

To address the drawback of low thermal conductivity conventional organic phase change materials (PCMs), a paraffin-wax-based composite (PCC) was assembled via vacuum impregnation method, using new type carbon fiber network material as supporting matrix. The sheet (CFS) exhibited structure comprising high-thermal-conductivity fibers, beneficial for enhancing heat transfer properties PCC. sheet-shaped stacked and compressed, then impregnated with liquid paraffin wax PCM to form composite. conductivity, durability, shape stability, chemical storage characteristics PCC specimen were carefully analyzed. maximum 11.68 W·m−1·K−1 (4670% compared that pure paraffin) in radial direction, 0.93 axial direction sample, 17.44 vol % added CFS. retention rate after 200 cycles 78.6%. also displayed good stability terms structure, shape, ability. This study offers insights possible strategy development anisotropic PCCs potential applications latent systems.