Conductive adhesive and bonding method of composite material using the conductive adhesive

Patent metadata

Field	Value
Publication number	US-2016333231-A1
Application number	US-201514954880-A
Country	US
Kind code	A1
Filing date	Nov 30, 2015
Priority date	May 15, 2015
Publication date	Nov 17, 2016
Grant date	—

Abstract

A conductive adhesive includes an adhesive of 80 to 90 wt % and a conductive fiber of 10 to 20 wt %. The conductive adhesive according to the present disclosure has excellent conductivity by mixing the conductive fiber with the one-component adhesive or the two-component adhesive to make electric conduction smoother, and to improve adhesion properties and durability regarding temperature changes.

First claim

What is claimed is:

1 . A conductive adhesive comprises:
an adhesive of 80 to 90 wt % and a conductive fiber of 10 to 20 wt %.

2 . The conductive adhesive of claim 1 , wherein the adhesive is selected from the group consisting of epoxys, urethanes and acrylates.

3 . The conductive adhesive of claim 1 , wherein the conductive fiber is selected from the group consisting of a carbon fiber, a carbon fiber plated with a conductive metal, and a mixture thereof.

4 . The conductive adhesive of claim 3 , wherein the conductive metal comprises at least one selected from the group consisting of copper (Cu), zinc (Zn), silver (Ag), gold (Au), platinum (Pt), antimony (Sb), manganese (Mn), nickel (Ni), vanadium (V), indium (In), and tin (Sn).

5 . The conductive adhesive of claim 3 , wherein the conductive metal has an average thickness of 0.1 to 0.5 μm.

6 . The conductive adhesive of claim 3 , wherein in the carbon fiber plated with a conductive metal, the plating amount of the conductive metal is 8 to 150 wt % based on the carbon fiber.

7 . The conductive adhesive of claim 1 , wherein the conductive fiber has an average fiber length of 0.8 to 8 mm.

8 . The conductive adhesive of claim 1 , wherein the conductive fiber has an average fiber diameter of 2 to 12 μm.

9 . The conductive adhesive of claim 1 , wherein the adhesive comprises a one-component adhesive.

10 . The conductive adhesive of claim 1 , wherein the adhesive comprises a two-component adhesive.

11 . A bonding method of a composite material for a vehicle, which comprises:
preparing a conductive fiber; manufacturing a conductive adhesive by mixing the conductive fiber of 10 to 20 wt % with an adhesive of 80 to 90 wt %; coating the conductive adhesive on a material to be adhered; and adhering a composite material on the material coated with the conductive adhesive.

12 . The bonding method of a composite material for the vehicle of claim 11 , wherein in the step of preparing the conductive fiber, a cutting process of the conductive fiber is conducted to achieve an average fiber length of 0.8 to 8 mm.

13 . The bonding method of a composite material for the vehicle of claim 11 , wherein the conductive fiber is selected from the group consisting of a carbon fiber, a carbon fiber plated with a conductive metal, and a mixture thereof.

14 . The bonding method of a composite material for the vehicle of claim 13 , wherein the conductive metal comprises at least one selected from the group consisting of copper (Cu), zinc (Zn), silver (Ag), gold (Au), platinum (Pt), antimony (Sb), manganese (Mn), nickel (Ni), vanadium (V), indium (In), and tin (Sn).

15 . The bonding method of a composite material for the vehicle of claim 13 , wherein the conductive metal has an average thickness of 0.1 to 0.5 μm.

16 . The bonding method of a composite material for the vehicle of claim 13 , wherein in the carbon fiber plated with a conductive metal, the plating amount of the conductive metal is 8 to 150 wt % based on the carbon fiber.

17 . The bonding method of a composite material for the vehicle of claim 11 , wherein the coating amount of the conductive adhesive is 1.42 to 5.20 kg per adhesion unit area of the material to be adhered.

18 . The bonding method of a composite material for the vehicle of claim 11 , wherein the adhesive comprises a one-component adhesive.

19 . The bonding method of a composite material for the vehicle of claim 11 , wherein the adhesive comprises a two-component adhesive.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Choi Young Ho
• Jeong Kie Youn
• Kim Seok Hwan

Classifications

• C09J9/02 Primary

  Electrically-conducting adhesives · CPC title

• C09J11/04

  inorganic · CPC title

• C09J2201/602

  Chemistry & Metallurgy · mapped topic

• C09J163/00

  Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins · CPC title

• C09J2463/00

  Presence of epoxy resin · CPC title