Conductive textile and method for fabricating the same

Patent metadata

Field	Value
Publication number	US-11629455-B2
Application number	US-202017076917-A
Country	US
Kind code	B2
Filing date	Oct 22, 2020
Priority date	Apr 22, 2020
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

Abstract

A conductive textile includes a base cloth and a conductive film disposed on the base cloth. The conductive film includes a polyurethane resin and a silver bearing conductor, in which a content of the silver bearing conductor is 55 parts by weight to 80 parts by weight, and a content of the polyurethane resin is 8 parts by weight to 12 parts by weight.

First claim

What is claimed is:

1. A conductive textile comprising:
a base cloth; and
a conductive film disposed on the base cloth, wherein the conductive film comprises:
a polyurethane resin; and
a silver bearing conductor, wherein a content of the silver bearing conductor is 55 parts by weight to 80 parts by weight, a content of the polyurethane resin is 8 parts by weight to 12 parts by weight, the silver bearing conductor comprises a silver nanowire, a wire diameter of the silver nanowire is between 40 nm and 160 nm, and an aspect ratio of the silver nanowire is between 100 and 1000.

2. The conductive textile of claim 1 , wherein a fabricating method for the polyurethane resin comprises:
mixing a isocyanate and a glycerol to form an intermediate product; and
mixing the intermediate product, a polyether polyol, and a catalyst to form the polyurethane resin.

3. The conductive textile of claim 1 , wherein the polyurethane resin comprises a molecular structure represented by formula (1), wherein k, n1, n2, n3, n4, n5, n6, m1, and m2 are positive integers, and (k+m1+m2+4):(n+n2+n3+n4+m1×n5+m2×n6) is between 10:5 and 10:7.

4. The conductive textile of claim 1 , wherein the silver bearing conductor comprises a flake-like silver powder, and a length of a maximum major axis of the flake-like silver powder is between 2 μm and 10 μm.

5. The conductive textile of claim 1 , wherein a thickness of the conductive film is between 5 μm and 55 μm.

6. The conductive textile of claim 1 , wherein when the conductive textile is stretched to 120% of its original length, a relative resistance variation of the conductive textile is lower than 25%.

7. A fabricating method for a conductive textile, comprising:
providing a base cloth;
performing a mixing step to mix a polyurethane resin, a silver bearing conductor, and an n-propanol, such that a conductive silver paste is obtained, wherein a content of the silver bearing conductor is 55 parts by weight to 80 parts by weight, a content of the polyurethane resin is 8 parts by weight to 12 parts by weight, the silver bearing conductor comprises a silver nanowire, a wire diameter of the silver nanowire is between 40 nm and 160 nm, and an aspect ratio of the silver nanowire is between 100 and 1000;
performing a coating step to coat the conductive silver paste onto the base cloth; and
performing a bake-drying step to bake and dry the base cloth undergone the coating step, such that a conductive film is formed on the base cloth.

8. The fabricating method for the conductive textile of claim 7 , wherein a content of the n-propanol is 8 parts by weight to 35 parts by weight.

9. The fabricating method for the conductive textile of claim 7 , wherein a viscosity of the conductive silver paste is between 29000 cP and 54500 cP.

Assignees

• Taiwan Textile Res Inst

Inventors

• Chou Wei-Hao
• Wu cheng-liang

Classifications

• C08G18/3206

  aliphatic · CPC title

• C08K2003/0806

  Silver · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• D06M23/16

  Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment · CPC title

• C08G18/758

  containing two or more cycloaliphatic rings · CPC title