▎ 摘　　要

NOVELTY - Aerogel fiber with specific cross-sectional morphological characteristics comprises two-dimensional nanosheets. The cross-section of fibers is arranged in concentric circular sheets and/or radial spiral sheets. USE - Aerogel fiber with specific cross-sectional morphological characteristics ADVANTAGE - The graphene fiber has high modulus and high thermal conductivity. The method improves thermal conductivity and modulus. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the device for preparing aerogel fibers with specific cross-sectional morphological characteristics comprising extrusion device, coagulation bath and freeze-drying system. DESCRIPTION OF DRAWING(S) - The drawing shows a self-made rotary extrusion spinning device schematic diagram.