Method for preparing carbon nanofiber with surface micropore morphology by using alkali lignin and polyacrylonitrile

• Main Authors: GUO DALIANG, LIU XIAOGANG, SHA ZHOU, SHEN CONGHAO, ZHANG SHENCHONG, LI JING, ZHAO HUIFANG
• Format: Patent
• Language: Chinese; English
• Published: 30.12.2022
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; NANOTECHNOLOGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; PERFORMING OPERATIONS; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; SPINNING; TEXTILES; TRANSPORTING

The invention discloses a method for preparing carbon nanofibers with surface micropore morphology from alkali lignin and polyacrylonitrile, which comprises the following steps: sucking a polyacrylonitrile solution by using a No.1 injector, introducing the polyacrylonitrile solution into a needle opening A of a No.1 electrostatic spinning machine, and using an injection pump of the No.1 electrostatic spinning machine; the alkali lignin solution is sucked by a second injector and connected into a needle opening B of a second electrostatic spinning machine, and an injection pump of the second electrostatic spinning machine is used; sticking release paper on a receiver of an electrostatic spinning machine, and spinning by using the electrostatic spinning machine; after spinning is finished, obtained precursor fibers are dried, the dried precursor fibers are put into a muffle furnace to be oxidized, and oxidized fibers are obtained; and placing the oxidized fiber in a tubular furnace, carbonizing under the protec