US 11,982,047 B2
Silver-plated conductive nylon fiber and preparation method thereof
Tieling Xing, Suzhou (CN); Xin Ai, Suzhou (CN); Ailing Xie, Suzhou (CN); Shenzhou Lu, Suzhou (CN); and Guoqiang Chen, Suzhou (CN)
Assigned to SOOCHOW UNIVERSITY, Suzhou (CN)
Appl. No. 17/798,179
Filed by SOOCHOW UNIVERSITY, Suzhou (CN)
PCT Filed Jun. 4, 2021, PCT No. PCT/CN2021/098235
§ 371(c)(1), (2) Date Aug. 8, 2022,
PCT Pub. No. WO2022/252199, PCT Pub. Date Dec. 8, 2022.
Claims priority of application No. 202110603872.7 (CN), filed on May 31, 2021.
Prior Publication US 2024/0026601 A1, Jan. 25, 2024
Int. Cl. D06M 11/83 (2006.01); D06M 13/175 (2006.01); D06M 13/207 (2006.01); D06M 13/224 (2006.01); D06M 13/238 (2006.01); D06M 101/34 (2006.01)
CPC D06M 11/83 (2013.01) [D06M 13/175 (2013.01); D06M 13/207 (2013.01); D06M 13/2246 (2013.01); D06M 13/238 (2013.01); D06M 2101/34 (2013.01); D06M 2200/00 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for preparing a silver-plated conductive nylon fiber, comprising steps of:
(1) immersing a nylon fiber in an aqueous solution containing a polyphenolic compound at 60° C. to 70° C., adding a water-soluble oxidant into the solution, continuously reacting the resultant reaction solution at 70° C. to 80° C., and obtaining a polyphenol grafted nylon fiber after the reaction is completed, wherein the polyphenolic compound contains a catechol group, and the aqueous solution of the polyphenolic compound has a concentration of 1 g/L to 5 g/L;
(2) immersing the polyphenol grafted nylon fiber obtained in the step (1) into a solution containing silver ions at 15° C. to 25° C. for reaction, and raising the temperature to 70° C. to 80° C. for continuous reaction to obtain a surface-activated nylon fiber, wherein in the solution containing silver ions, the concentration of silver ions is 1×10−5 mol/L to 3×10−5 mol/L; and
(3) carrying out chemical silver plating treatment on the surface-activated nylon fiber obtained in the step (2) to obtain the silver-plated conductive nylon fiber.