A coated metallic substrate

Patent metadata

Field	Value
Publication number	US-2021139712-A1
Application number	US-201917058087-A
Country	US
Kind code	A1
Filing date	Jun 11, 2019
Priority date	Jun 15, 2018
Publication date	May 13, 2021
Grant date	—

Abstract

A metallic substrate directly coated with a non-conductive primer, the non-conductive primer being at least partially coated with a paint, a method for the manufacture of this coated metallic substrate, a method for detecting strain deformation and the use the coated metallic substrate.

First claim

What is claimed is:

1 - 26 . (canceled)

27 . A coated metallic substrate comprising: a metallic substrate directly coated with a non-conductive primer, the non-conductive primer being at least partially coated on at least one side with a paint including reduced graphene oxide and a thermosetting polymer.

28 . The coated metallic substrate as recited in claim 27 wherein a lateral size of the reduced graphene oxide is between 1 and 80 μm.

29 . The coated metallic substrate as recited in claim 27 wherein a weight percentage of oxygen in the reduced graphene oxide is between 2 and 20%.

30 . The coated metallic substrate as recited in claim 27 wherein a concentration of the reduced graphene oxide in the paint is between 0.05 and 10% by weight.

31 . The coated metallic substrate as recited in claim 27 wherein the thermosetting polymer is chosen from at least one of the group consisting of: epoxy resin, Polyester resin, Polyurethanes, Polyurea/polyurethane, Vulcanized rubber, Urea-formaldehyde, Melamine resin, Benzoxazines, Polyimides, Bismaleimides, Cyanate esters, polycyanurates, Furan, Silicone resins, Thiolyte and Vinyl ester resins and a mixture thereof.

32 . The coated metallic substrate as recited in claim 27 wherein the non-conductive primer is made of at least one polymer.

33 . The coated metallic substrate as recited in claim 33 wherein the polymer is chosen from at least one of the group consisting of: Poly(methyl methacrylate), epoxy resin, Polyester resin, Polyurethanes, Polyurea/polyurethane, Vulcanized rubber, Urea-formaldehyde, Melamine resin, Benzoxazines, Polyimides, Bismaleimides, Cyanate esters, polycyanurates, Furan, Silicone resins, Thiolyte and Vinyl ester resins and a mixture thereof.

34 . The coated metallic substrate as recited in claim 27 wherein the metallic substrate is chosen from at least one of the group consisting of: aluminum, steel, stainless steel, copper, iron, copper alloys, titanium, cobalt, metal composite or nickel and a mixture thereof.

35 . The coated metallic substrate as recited in claim 27 wherein the non-conductive primer is coated with paint strips to form an alternation between painted and non-painted non-conductive primer.

36 . A method for manufacture of the coated metallic substrate as recited in claim 27 , the method comprising the successive following steps:
A. depositing a non-conductive primer on the metallic substrate; B. depositing a mixture including the reduced graphene oxide, the thermosetting monomer, a curing agent and optionally a solvent on the non-conductive primer previously deposited on the metallic substrate; and C. curing the mixture.

37 . The method as recited in claim 36 wherein in step B), the solvent is chosen from at least one of the group consisting of: xylene, n-butanol, ethylbenzene, naphtha, n-butyl acetate, toluene, isopropanol, cyclic hydrocarbons and benzyl alcohol and a mixture thereof.

38 . The method as recited in claim 36 wherein in step B), the curing agent is chosen from at least one of the group consisting of: polyamide, phenols, amines and polyaddition isocyanate.

39 . A method for detecting a strain deformation with the coated metallic substrate as recited in claim 12 , the method comprising the following successive steps:
applying an electrical voltage to the coated metallic substrate using an electronic system; and measuring an electrical resistance variation after deformations of the coated metallic substrate.

40 . The method as recited in claim 39 wherein the electronic system includes a power supply system.

Assignees

• Arcelormittal

Inventors

• Alvarez-Alvarez Abel
• Perez Vidal Oscar
• Rodriguez Martinez Carlos Javier
• NORIEGA PEREZ David
• Fernandez Alvarez Jose Paulino

Classifications

• C09D133/02 Primary

  Homopolymers or copolymers of acids; Metal or ammonium salts thereof · CPC title

• B05D7/542

  the two layers being cured or baked together · CPC title

• C09D163/00

  Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins · CPC title

• C09D7/61

  inorganic · CPC title

• C09D5/002 Primary

  Priming paints (C09D5/08 takes precedence) · CPC title