-
1.发明授权公开(公告)号：US12024798B2
公开(公告)日：2024-07-02
申请号：US17615447
申请日：2021-05-20
Applicant: SOOCHOW UNIVERSITY
Inventor： Yuqing Liu , Yu He , Chengwei Wan , Kaiyi Chen , Zhong Wang , Guohe Wang , Zhijuan Pan
CPC classification number: D01F2/10 , C08K5/175 , C08L1/02 , D01D5/06 , D01F1/10 , C08L2203/12 , C08L2205/16 , D10B2201/24 , D10B2401/063 , D10B2505/00
Abstract: The present invention provides a preparation method of an anti-counterfeiting lyocell fiber, including the following steps: dissolving at least one amino acid metal chelate and a cellulose pulp in an aqueous solution of a cellosolve to obtain a spinning solution, and then performing wet spinning using the spinning solution to obtain an anti-counterfeiting lyocell fiber, wherein the amino acid metal chelate account for 0.2% to 0.6% of the total mass of the anti-counterfeiting lyocell fiber. The anti-counterfeiting lyocell fiber of the present invention uses an amino acid metal chelate for encryption, and the process is simple. The prepared product can be provided with one or two passwords based on the ratio of metal ions and the amino acids, so that the product prepared from this fiber has the advantages of memory tracking properties, identification function and high anti-counterfeiting capability grade.
-
公开(公告)号：US11946166B2
公开(公告)日：2024-04-02
申请号：US17618317
申请日：2021-05-20
Applicant: SOOCHOW UNIVERSITY
Inventor： Yuqing Liu , Qin Li , Xingxing Li , Yeke Zhang , Zhong Wang , Guohe Wang , Zhijuan Pan
CPC classification number: D01F2/08 , D01D1/02 , D01D5/06 , D01F1/10 , G07D7/02 , G07D7/06 , D10B2201/22 , D10B2505/00
Abstract: The invention relates to a method for preparing an anti-counterfeiting modal fiber, including: mixing a pulp stock solution with a cellulose catalyst, alkalizing, aging, sulfonating, and then dissolving the pulp stock solution in an alkaline solution to obtain a treatment solution; mixing the treatment solution with multiple amino acid-metal chelates, filtering, defoaming and ripening to obtain a spinning stock solution; and mixing the spinning stock solution with a spinning bath additive, and wet spinning, followed by drafting, defoaming, desulfurizing, water washing, and other post-treatments, to obtain an anti-counterfeiting modal fiber, wherein the amino acid metal-chelates account for 0.5%-1.5% by weight of the spinning stock solution. Amino acid-metal chelates are used to anti-counterfeit and encrypt the modal fibers, and the anti-counterfeiting and encrypting is involved in the spinning stock solution of modal fibers. The fiber source can be tracked and identified by detecting the species of metal elements and amino acids.
-
公开(公告)号：US11895921B2
公开(公告)日：2024-02-06
申请号：US18013683
申请日：2021-06-25
Inventor： Yuqing Liu , Yuting Wang , Jing Hu , Xin Yang , Ranran Li , Jian Fang
IPC: H10N30/08 , H10N30/50 , H10N30/057 , H10N30/87
CPC classification number: H10N30/08 , H10N30/057 , H10N30/506 , H10N30/877 , Y10T29/42
Abstract: A preparation method for a piezoelectric fiber is provided including a piezoelectric functional layer and an insulating layer coated on the piezoelectric functional layer. The piezoelectric functional layer includes a piezoelectric composite layer of a spiral winding structure, and the piezoelectric composite layer includes a first piezoelectric layer, a conductive layer and a second piezoelectric layer that are sequentially stacked. The preparation method includes taking one end of the piezoelectric composite layer as a winding axis, winding the piezoelectric composite layer in a direction perpendicular to the winding axis to form the piezoelectric functional layer, wherein turns of winding the piezoelectric composite layer are greater than 5, coating the piezoelectric functional layer with the insulating layer, and vacuum heating to consolidate, to prepare a preform rod.
-
-
Search Results
3
records
(took 0.011 seconds)
