US 12,324,995 B1
Magnetic response fiber material and its preparation method and application
Bowen Cheng, Tianjin (CN); Dengkun Shu, Tianjin (CN); Shuo Yang, Tianjin (CN); Chenyang Li, Tianjin (CN); Peng Xi, Tianjin (CN); and Lei Xia, Tianjin (CN)
Assigned to Tianjin University of Science and Technology, Tianjin (CN)
Filed by Tianjin University of Science and Technology, Tianjin (CN)
Filed on Dec. 26, 2024, as Appl. No. 19/001,573.
Claims priority of application No. 202311825489.1 (CN), filed on Dec. 28, 2023.
Int. Cl. B01D 17/02 (2006.01); B01D 39/16 (2006.01); B01D 39/20 (2006.01); C02F 1/28 (2023.01); C02F 1/40 (2023.01); D01D 1/02 (2006.01); D01D 5/00 (2006.01); D01F 1/10 (2006.01); D01F 6/04 (2006.01); D04H 1/728 (2012.01); C02F 101/32 (2006.01); C02F 103/00 (2006.01)
CPC B01D 17/0202 (2013.01) [C02F 1/285 (2013.01); C02F 1/40 (2013.01); D01D 1/02 (2013.01); D01D 5/0038 (2013.01); D01F 1/10 (2013.01); D01F 6/04 (2013.01); D04H 1/728 (2013.01); B01D 39/1623 (2013.01); B01D 39/2031 (2013.01); C02F 2101/32 (2013.01); C02F 2103/007 (2013.01); D10B 2321/021 (2013.01); D10B 2401/00 (2013.01); D10B 2505/00 (2013.01)] 4 Claims
 
1. A preparation method of a magnetic response fiber material, comprising:
step (1), mixing a fiber-forming polymer, a primary solvent, a secondary solvent and magnetic nanoparticles to form a uniform spinning solution, wherein the fiber-forming polymer comprises at least one of polyethylene, polypropylene and polymethylpentene; the primary solvent comprises at least one of aliphatic hydrocarbon and halogenated hydrocarbon; the aliphatic hydrocarbon comprises at least one of n-hexane and butane; the halogenated hydrocarbon comprises at least one of dichloromethane and chloroform; the secondary solvent comprises at least one of alkane, nitrogen and carbon dioxide; the magnetic nanoparticles comprise at least one of iron oxide nanoparticles and nickel oxide nanoparticles; a diameter of the magnetic nanoparticles is in a range of 50-80 nanometers (nm); a mass ratio of the fiber-forming polymer to the magnetic nanoparticles is in a range of (9-10):(1-10); a mass-volume ratio of the fiber-forming polymer to the primary solvent is in a range of (1-2):(6-7) in terms of grams per milliliter (g/mL); and a mass ratio of the fiber-forming polymer to the secondary solvent is (1-2):(7-8); and
step (2), spinning the spinning solution by a high-pressure electrospray spinning process to obtain the magnetic response fiber material, wherein conditions of the high-pressure electrospray spinning process comprise: temperature of 200-250° C., pressure of 10-15 megapascals (MPa), and stirring speed of 150-200 revolutions per minute (r/min).