Manufacturing method for carbonfiber grown metal oxide

Patent metadata

Field	Value
Publication number	US-10655238-B2
Application number	US-201615249211-A
Country	US
Kind code	B2
Filing date	Aug 26, 2016
Priority date	Aug 28, 2015
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

A method for manufacturing metal oxide-grown carbon fibers including immersing carbon fibers in a solution for forming a metal oxide seed layer and electrodepositing a metal oxide seed on the surfaces of carbon fibers, or irradiating microwave thereto to form a metal oxide seed layer, and irradiating microwave to the metal oxide seed layer-formed carbon fibers to grow metal oxide. The method for manufacturing metal oxide-grown carbon fibers can reduce process time, and improve process energy efficiency and production efficiency. The method for manufacturing metal oxide-grown carbon fibers can offer metal oxide-grown carbon fibers with improved interfacial shear stress.

First claim

What is claimed is:

1. A method for manufacturing metal oxide coated carbon fibers comprising:
immersing carbon fibers in a solution for forming a metal oxide seed layer, wherein the solution for forming the metal oxide seed layer comprises a solvent and zinc hydroxide (Zn(OH) 2 ),
electrodepositing a metal oxide seed on surfaces of the immersed carbon fibers; and
growing a metal oxide on the carbon fiber by irradiating microwaves to the metal oxide seed layer coated carbon fibers,
wherein the metal oxide is a nanorod or a wire, the metal oxide is grown in a direction vertical to a carbon fiber length on the surfaces of the carbon fibers, and
interlocks the carbon fibers,
wherein the metal oxide is grown by immersing the metal oxide seed layer-coated carbon fibers in a nitride-containing aqueous solution and then irradiating the metal oxide in the nitride-containing aqueous solution with microwaves, and
wherein the nitride comprises metal nitride and hexamethylenetetramine (HMTA).

2. The method according to claim 1 , further comprising
treating the surface of the carbon fibers before forming the metal oxide seed layer,
wherein the treating the surface is carried out by a method selected from the group consisting of coupling agent treatment, plasma treatment, acid treatment and dopamine treatment.

3. The method according to claim 1 , wherein the metal oxide seed layer forming solution further comprises any one selected from the group consisting of zinc acetate, copper chloride, nickel nitride, a hydrate thereof and a combination thereof.

4. The method according to claim 1 , wherein the irradiation of microwave is carried out at a microwave power of 100 to 2000 W, at a frequency of 300 to 30,000 MHz and at a charge density of 0.001 to 10 C/cm 2 for 0.1 seconds to 2 hours.

5. A method for manufacturing metal oxide coated carbon fibers comprising:
spinning a carbon fiber seed;
stabilizing and carbonizing the spun carbon fiber;
forming a metal oxide seed layer on the stabilized and carbonized carbon fiber;
and growing a metal oxide,
wherein the forming the metal oxide seed layer comprises immersing carbon fibers in a solution for forming a meta oxide seed layer and then electrodepositing a metal oxide seed on surfaces of the carbon fibers,
wherein the growing the metal oxide is carded out by irradiating microwave to the metal oxide seed layer-formed carbon fiber,
wherein the solution for the metal oxide seed layer comprises a solvent and zinc hydroxide (Zn(OH) 2 ),
wherein the metal oxide is a nanorod or a wire, the metal oxide
is grown in a direction vertical to a carbon fiber length on the surfaces of the carbon fibers, and
interlocks the carbon fibers,
wherein the metal oxide is grown by immersing the metal oxide seed layer-formed carbon fibers in a nitride-containing aqueous solution and then growing the metal oxide in the nitride-containing aqueous solution, and
wherein the nitride comprises metal nitride and hexamethylenetetramine (HMTA).

6. The method according to claim 1 , wherein the electrodeposition is carried out in a device using the carbon fibers as a cathode, using an electrode plate as an anode and using the solution for forming the metal oxide seed layer as an electrolyte.

7. The method according to claim 6 , wherein the electrode plate comprises any one selected from the group consisting of aluminum, zinc, copper, iron, graphite, silver, gold, platinum and lead.

Assignees

• Nat Univ Chonbuk Ind Coop Found

Inventors

• Kim Seong Su
• Song Seung A
• Lee Ha Eun

Classifications

• D06M2101/40

  Fibres of carbon · CPC title

• D06M11/36

  with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond · CPC title

• D06M13/332

  Di- or polyamines · CPC title

• D01F11/16

  by physicochemical methods · CPC title

• D01F11/123

  Oxides · CPC title