US 12,435,447 B2
Aerogel fiber having specific cross-sectional morphological feature, graphene fiber and preparation method and device therefor
Chao Gao, Zhejiang (CN); Peng Li, Zhejiang (CN); Yingjun Liu, Zhejiang (CN); Zhen Xu, Zhejiang (CN); and Ziqiu Wang, Zhejiang (CN)
Assigned to ZHEJIANG UNIVERSITY, Hangzhou (CN)
Filed by ZHEJIANG UNIVERSITY, Zhejiang (CN)
Filed on Feb. 6, 2024, as Appl. No. 18/434,741.
Application 18/434,741 is a continuation of application No. PCT/CN2021/137642, filed on Dec. 14, 2021.
Prior Publication US 2024/0175169 A1, May 30, 2024
Int. Cl. D01D 5/06 (2006.01); D01D 10/02 (2006.01); D01D 10/06 (2006.01); D01F 9/12 (2006.01)
CPC D01D 5/06 (2013.01) [D01D 10/02 (2013.01); D01D 10/06 (2013.01); D01F 9/12 (2013.01); D10B 2101/12 (2013.01); D10B 2401/08 (2013.01); D10B 2401/16 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for preparing the aerogel fiber having specific cross-sectional morphological feature, which is consisted of two-dimensional nanosheets, and has a cross section in a concentric sheet arrangement or a radially spiral sheet arrangement, the method comprising:
extruding a dispersion of two-dimensional nanosheets into a circular spinning tube with an axial speed along an extrusion direction and passing the dispersion through a rotating rotor with a rotation speed perpendicular to the axial speed to cause the dispersion to form a concentric circle arrangement or a spiral arrangement;
extruding the dispersion with a concentric circle arrangement or a spiral arrangement into a coagulation bath to obtain a gel fiber; and
performing structural fixation after coagulation to obtain the aerogel fiber having specific cross-sectional morphological feature.