Metal-plastic composite material and method for manufacturing same

Patent metadata

Field	Value
Publication number	US-11993056-B2
Application number	US-202017782958-A
Country	US
Kind code	B2
Filing date	Dec 9, 2020
Priority date	Dec 11, 2019
Publication date	May 28, 2024
Grant date	May 28, 2024

Abstract

The present invention provides a metal-plastic composite material having excellent adhesive strength and formability and a method for manufacturing the same, and specifically, the present invention provides a metal-plastic composite material and a method for manufacturing the same comprising: a metal layer; and a plastic layer on at least one surface of the metal layer, wherein a thin film layer formed of a silane coupling agent is provided between the metal layer and the plastic layer, and the metal layer and the plastic layer are bonded by covalent bonding with the silane coupling agent.

First claim

The invention claimed is:

1. A metal-plastic composite material, comprising:
a metal layer;
a plastic layer on at least one surface of the metal layer; and
a thin film layer provided between the metal layer and the plastic layer,
wherein the thin film layer includes (i) a silane coupling agent at an amount of 95 to 99 weight %, and (ii) a phenoxy-based resin at an amount of 1 to 5 weight % based on a total weight of the thin film layer,
wherein the silane coupling agent is at least one selected from a group consisting of 6-[[3-(triethoxysilyl)propyl]amino]-1,3,5-triazine-2,4-dithiol monosodium (TES) and tetramethoxy silane,
wherein the metal layer and the plastic layer are bonded to each other by a covalent bond with the silane coupling agent.

2. The metal-plastic composite material of claim 1 , wherein a material of the metal layer is an electric galvanized steel sheet or a hot-dip galvanized steel sheet.

3. The metal-plastic composite material of claim 1 , wherein the plastic layer includes one or more polymers selected from a group consisting of polyamide, polyacetal, polycarbonate, polyphenylene oxide, polyethylene, polypropylene, polyester and polyurethane.

4. The metal-plastic composite material of claim 1 , wherein a ratio of a thickness between the plastic layer and the metal layer is 3:1 to 1:5.

5. The metal-plastic composite material of claim 1 , wherein the thin film layer has a thickness of 1 nm or more to less than 1000 nm.

6. The metal-plastic composite material of claim 1 , wherein the covalent bond is a carbon-carbon bond, a siloxane bond, an amide bond, an ester bond, or an ether bond.

7. The metal-plastic composite material of claim 1 , wherein the metal-plastic composite material has a metal layer formed on both surfaces of the plastic layer.

8. A method of manufacturing the metal-plastic composite material of claim 1 , the method comprising:
forming the thin film layer on one surface or both surfaces of the metal layer; laminating the plastic layer on the thin film layer; and
bonding the metal-plastic laminated material by applying heat and pressure thereto.

9. The method of claim 8 , wherein the silane coupling agent and the metal layer and the silane coupling agent and the plastic layer form a covalent bond by the bonding the metal-plastic laminated material by applying heat and pressure thereto.

10. The method of claim 9 , wherein the covalent bond is a carbon-carbon bond, a siloxane bond, an amide bond, an ester bond, or an ether bond.

11. The method of claim 8 , wherein the bonding step is performed at a temperature of 80 to 280° C.

12. The method of claim 8 , wherein thin film layer has a thickness of 1 nm or more to less than 1000 nm.

Assignees

• Posco

Inventors

• Yoo Hye-Jin
• Byeon Chang-Se
• Kim Jung-Su
• Baek Je-Hoon
• Kim Hwi-Geon

Classifications

• B32B15/08 Primary

  of synthetic resin · CPC title

• B32B7/10

  at least one layer having inter-reactive properties · CPC title

• B32B15/18

  comprising iron or steel {(B32B15/011, B32B15/012 and B32B15/013 take precedence)} · CPC title

• C08K5/5415

  containing at least one Si—O bond · CPC title

• C08K5/544

  containing nitrogen · CPC title