公开(公告)号：US10428184B2

公开(公告)日：2019-10-01

申请号：US15302335

申请日：2015-04-09

Applicant: UNIVERSITÄT BAYREUTH

Inventor： Andreas Greiner ,  Seema Agarwal ,  Mitsunobu Doimoto

IPC: D01D5/00 ,  D01F6/44 ,  C08J3/07 ,  D06M13/507 ,  D06M13/513 ,  D01F1/10 ,  D01F6/50 ,  B01D67/00 ,  B01D69/02 ,  C09D133/16 ,  C09D7/65

Abstract: The invention concerns a method for producing a superhydrophobic membrane or surface coating of a substrate from an aqueous phase comprising the following steps: a) Preparing an aqueous dispersion by dispersing particles of hydrophobic polymer(s) in an aqueous solution of protic polymer(s), wherein the protic polymer(s) and the hydrophobic polymer(s) are present in a weight ratio of protic polymer(s):hydrophobic polymer(s) in a range of 5:95 to 22:78, b) electrospinning the dispersion of step a) onto a carrier for producing the membrane or onto the surface for producing the surface coating thereby producing at least one fiber and a nonwoven fabric from the fiber, c) subjecting the nonwoven fabric to a sol-gel process, wherein a precursor/precursors of the sol-gel comprise(s) an alkoxysilane, and d) curing the nonwoven fabric obtained by step c) at a temperature in a range of 50° C. to 150° C.

公开(公告)号：US20190276961A1

公开(公告)日：2019-09-12

申请号：US16346817

申请日：2017-10-27

Applicant: Universität Bayreuth

Inventor： Andreas Greiner ,  Seema Agarwal ,  Markus Langner ,  Steffen Reich

IPC: D04H1/4234 ,  C08J3/12 ,  D04H1/4334 ,  D04H1/435 ,  D04H1/46 ,  D01D5/00

Abstract: The invention concerns an electrically conductive non-woven fabric which fabric comprises or consists of a three-dimensional network of non-woven non-electrically conductive synthetic nanofibers and electrically conductive metal nanowires distributed therein, wherein the synthetic nanofibers comprise or consist of fibers having a diameter in the range of 10 nm to 2000 nm and a maximal length of 6 mm, wherein the electrically conductive metal nanowires comprise or consist of strands having a diameter in the range of 10 nm to 800 nm and a length in the range of 1 μm to 500 μm, wherein the electrically conductive metal nanowires occupy between 0.5% by volume to 5% by volume of said fabric, wherein the electrically conductive metal nanowires and the synthetic nanofibers are homogenously distributed within the electrically conductive non-woven fabric.

公开(公告)号：US20180171093A1

公开(公告)日：2018-06-21

申请号：US15552527

申请日：2016-02-25

Applicant: UNIVERSITÄT BAYREUTH

Inventor： Andreas Greiner ,  Seema Agarwal ,  Markus Langner

IPC: C08J9/40 ,  C08F26/06 ,  C08G16/02 ,  A61L2/238 ,  C08J9/42 ,  F21V19/00

CPC classification number: C08J9/40 ,  A01N59/16 ,  A01N59/20 ,  A61L2/238 ,  A61L9/00 ,  B01D39/1623 ,  B01D39/1676 ,  B01D39/2031 ,  B01D2239/0471 ,  B01D2239/0478 ,  B01J23/50 ,  B01J31/06 ,  B01J35/0013 ,  B01J35/04 ,  B01J35/06 ,  B01J37/0217 ,  B01J37/0219 ,  B32B5/18 ,  B82Y30/00 ,  C08F26/06 ,  C08G16/0268 ,  C08G2101/00 ,  C08J9/0061 ,  C08J9/42 ,  C08J2201/038 ,  C08J2205/05 ,  C08J2339/08 ,  C08J2361/28 ,  C08J2375/04 ,  C08J2375/06 ,  C08J2375/08 ,  C08J2377/00 ,  C08J2379/08 ,  C08J2429/04 ,  C08J2439/00 ,  C08J2439/06 ,  C08J2439/08 ,  C08J2471/02 ,  C08J2479/02 ,  C08J2481/02 ,  F21V19/0025 ,  H05B3/16 ,  A01N25/10 ,  A01N25/34 ,  A01N25/30

Abstract: The present invention relates to a method for preparing a metallized open-cell foam or fibrous substrate, wherein the method comprises: (A) providing an open-cell foam or fibrous substrate, wherein the open-cell foam or fibrous substrate contains a polymer comprising heteroatom-containing moieties within the bulk of the open-cell foam or fibrous substrate or as a coating on the open-cell foam or fibrous substrate, wherein the polymer comprising heteroatom-containing moieties is selected from polyvinylpyridine, polyvinylpyrrolidone, polyvinyl alcohol, polyallylamine, polyethylene oxide, polyethylene imine, polyethylene sulfide and copolymers or blends thereof; (B) contacting the open-cell foam or fibrous substrate with nanoparticles of a first metal to provide a nanoparticle coated open-cell foam or fibrous substrate; and (C) contacting the nanoparticle coated open-cell foam or fibrous substrate with a solution comprising a salt of a second metal and a reducing agent to provide the metallized open-cell foam or fibrous substrate having a layer of the second metal on the nanoparticle coated open-cell foam or fibrous substrate.