A coated non-conductive substrate

Patent metadata

Field	Value
Publication number	US-2021206991-A1
Application number	US-201917058106-A
Country	US
Kind code	A1
Filing date	Jun 11, 2019
Priority date	Jun 15, 2018
Publication date	Jul 8, 2021
Grant date	—

Abstract

A non-conductive substrate being at least partially coated with a paint including reduced graphene oxide and a thermosetting polymer, the non-conductive substrate being directly coated by the paint, a method for the manufacture of this coated non-conductive substrate, methods for detecting leaks or strain deformation and the uses of said coated non-conductive substrate.

First claim

1 - 29 . (canceled)

30 . A coated non-conductive substrate comprising:
a non-conductive substrate being at least partially coated on at least one side with a paint including a reduced graphene oxide having a surface area below 300 m 2 ·gr −1 and at least one thermosetting polymer, the non-conductive substrate being directly coated by the paint.

31 . The coated non-conductive substrate as recited in claim 30 wherein a lateral size of the reduced graphene oxide is between 1 and 80 μm.

32 . The coated non-conductive substrate as recited in claim 30 wherein a weight percentage of oxygen in the reduced graphene oxide is between 2 and 20%.

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

34 . The coated non-conductive substrate as recited in claim 30 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.

35 . The coated non-conductive substrate as recited in claim 30 wherein the non-conductive substrate is a textile or a plastic substrate.

36 . The coated non-conductive substrate as recited in claim 30 wherein the non-conductive substrate is coated with paint strips to form an alternation between painted non-conductive substrate and non-painted non-conductive substrate.

37 . A method for manufacture of the coated non-conductive substrate as recited in claim 30 , the method comprising the successive following steps:
A. mixing the reduced graphene oxide having a surface area below 300 m 2 ·gr −1 , a thermosetting monomer, a curing agent and optionally a solvent; B. depositing the mixture on the non-conductive substrate; and C. curing the mixture.

38 . The method as recited in claim 37 wherein in step A), the solvent is chosen from at least one of the group consisting of: xylene, n-butanol, ethylbenzene, naphtha and a mixture thereof.

39 . The method as recited in claim 37 wherein in step A), the curing agent is chosen from at least one of the group consisting of: polyamide, polyamide, phenols, amines and polyaddition isocyanate and a mixture thereof.

40 . A method for detecting a leak with the coated non-conductive substrate as recited in claim 30 , the method comprising the following successive steps:
applying an electric voltage to the coated non-conductive substrate using an electronic system; and detecting a leak when an electrical circuit is formed in the coated non-conductive substrate.

41 . The method as recited in claim 40 wherein the electronic system includes a power supply system and an emitter capable of indicating the leak.

42 . A method for detecting a strain deformation with the coated non-conductive substrate as recited in claim 30 , the method comprising the following successive steps:
applying an electric voltage to the coated non-conductive substrate using an electronic system; and measuring an electrical resistance variation after deformation of the coated non-conductive substrate.

43 . The method as recited in claim 42 wherein the electronic system includes a battery and a power supply system.

Assignees

• Arcelormittal

Inventors

• Alvarez-Alvarez Abel
• Perez Vidal Oscar
• Rodriguez Martinez Carlos Javier
• Fernandez Alvarez Jose Paulino
• Suarez Garcia Carlos
• Blanco Iglesias Hugo
• Melconmiguel Jorge

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• C09D5/00 Primary

  Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title

• C08K3/042

  Graphene or derivatives, e.g. graphene oxides · CPC title

• C09D7/61

  inorganic · CPC title

• C09D163/00 Primary

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