Graphene-containing coating film, and method for preparing the same

Patent metadata

Field	Value
Publication number	US-2017059117-A1
Application number	US-201514945081-A
Country	US
Kind code	A1
Filing date	Nov 18, 2015
Priority date	Aug 25, 2015
Publication date	Mar 2, 2017
Grant date	—

Abstract

A graphene-containing coating film includes at least one hydrate represented by Chemical Formula 1 as described herein, a graphene positioned in a shape on the surface of the hydrate represented by Chemical Formula 1, and a silica particle positioned on the surface of the hydrate of Chemical Formula 1 and positioned on the surface of the graphene in a shape of discontinuous island. Particularly, the silica particle includes agglomeration of a plurality of silica nanoparticles. A method of preparing the graphene-containing coating film and a vehicle part such as a head lamp including the same are also provided.

First claim

What is claimed is:

1 . A graphene-containing coating film, comprising:
at least one hydrate represented by Chemical Formula 1; a graphene positioned on the surface of the hydrate represented by Chemical Formula 1; and a silica particle positioned on the surface of the hydrate of Chemical Formula 1 and positioned on the surface of the graphene in a shape of discontinuous island, wherein the silica particle include agglomeration of a plurality of silica nanoparticles:
X n -M-(OH) 4-n   [Chemical Formula 1]

wherein, in Chemical Formula 1, M is selected from the group consisting of Si, Ti, Ag, Sn, In, and Zn, and a combination thereof, X is: a) a C1 to C30 alkyl group substituted or unsubstituted with at least one functional group selected from the group consisting of an epoxy group, a glycidoxy group, a vinyl group, an acryl group, a methacryl group, a carboxyl group, an amino group, a thiol group, a phosphoric acid group, a fluoro group, a chloro group, a bromo group, an iodine group, a hydroxy group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C1 to C10 ketone group, a substituted or unsubstituted C1 to C10 amine group, a substituted or unsubstituted C1 to C10 sulfur group, a substituted or unsubstituted C1 to C10 ester group, and a substituted or unsubstituted C1 to C10 silyl group; b) a C1 to C30 alkenyl group substituted or unsubstituted with at least one functional group selected from the group consisting of an epoxy group, a glycidoxy group, a vinyl group, an acryl group, a methacryl group, a carboxyl group, an amino group, a thiol group, a phosphoric acid group, a fluoro group, a chloro group, a bromo group, an iodine group, a hydroxy group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C1 to C10 ketone group, a substituted or unsubstituted C1 to C10 amine group, a substituted or unsubstituted C1 to C10 sulfur group, a substituted or unsubstituted C1 to C10 ester group, and a substituted or unsubstituted C1 to C10 silyl group; or c) a C1 to C30 alkynyl group substituted or unsubstituted with at least one functional group selected from the group consisting of an epoxy group, a glycidoxy group, a vinyl group, an acryl group, a methacryl group, a carboxyl group, an amino group, a thiol group, a phosphoric acid group, a fluoro group, a chloro group, a bromo group, an iodine group, a hydroxy group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C1 to C10 ketone group, a substituted or unsubstituted C1 to C10 amine group, a substituted or unsubstituted C1 to C10 sulfur group, a substituted or unsubstituted C1 to C10 ester group, and a substituted or unsubstituted C1 to C10 silyl group, and n is an integer of 1 to 3.

2 . The graphene-containing coating film of claim 1 , wherein the graphene-containing coating film comprises: a first region including the hydrate represented by Chemical Formula 1 and the silica particle bound with each other; and a second region including the hydrate represented by Chemical Formula 1, the graphene and the silica particle bound with one another.

3 . The graphene-containing coating film of claim 2 , wherein an average diameter of the silica particle of the first region is from about 5 nm to about 50 nm, and an average diameter of the silica particle of the second region is from about 5 nm to about 25 nm

4 . The graphene-containing coating film of claim 1 , wherein an average diameter of the silica nanoparticle is from about 5 nm to about 30 nm.

5 . The graphene-containing coating film of claim 1 , wherein a thickness of the graphene is from about 0.4 nm to about 5 nm.

6 . The graphene-containing coating film of claim 1 , wherein a major axis length of the graphene is from about 100 nm to about 10,000 nm, and a minor axis length of the graphene is about from 100 nm to about 900 nm.

7 . The graphene-containing coating film of claim 1 , wherein an amount of the graphene is from about 0.001 wt % to about 50 wt % based on the total weight of the hydrate represented by Chemical Formula 1, the graphene, and the silica nanoparticle.

8 . The graphene-containing coating film of claim 1 , wherein when transmittance is greater than or equal to about 70%, the an amount of the graphene is from about 0.001 wt % to about 3 wt % based on the total weight of the hydrate represented by Chemical Formula 1, the graphene, and the silica nanoparticle.

9 . The graphene-containing coating film of claim 1 , wherein the graphene-containing coating film has a thickness of about 100 nm to 2 μm.

10 . The graphene-containing coating film of claim 1 , wherein when transmittance is greater than or equal to about 70%, the graphene-containing coating film has a thickness of about 200 nm to 500 nm.

11 . The graphene-containing coating film of claim 1 , wherein the Chemical Formula 1 is represented by one of Chemical Formulae 1-1 to 1-3:
X 1 -M-(OH) 3   [Chemical Formula 1-1]
X 1 X 2 -M-(OH) 2   [Chemical Formula 1-2]
X 1 X 2 X 3 -M-(OH)  [Chemical Formula 1-3]
wherein, in Chemical Formulae 1-1 to 1-3, M is selected from the group consisting of Si, Ti, Ag, Sn, In, and Zn, and a combination thereof, X 1 , X 2 and X 3 are each independently: a) a C1 to C30 alkyl group substituted or unsubstituted with at least one functional group selected from the group consisting of an epoxy group, a glycidoxy group, a vinyl group, an acryl group, a methacryl group, a carboxyl group, an amino group, a thiol group, a phosphoric acid group, a fluoro group, a chloro group, a bromo group, an iodine group, a hydroxy group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C1 to C10 ketone group, a substituted or unsubstituted C1 to C10 amine group, a substituted or unsubstituted C1 to C10 sulfur group, a substituted or unsubstituted C1 to C10 ester group, and a substituted or unsubstituted C1 to C10 silyl group; b) a C1 to C30 alkenyl group substituted or unsubstituted with at least one functional group selected from the group consisting of an epoxy group, a glycidoxy group, a vinyl group, an acryl group, a methacryl group, a carboxyl group, an amino group, a thiol group, a phosphoric acid group, a fluoro group, a chloro group, a bromo group, an iodine group, a hydroxy group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C1 to C10 ketone group, a substituted or unsubstituted C1 to C10 amine group, a substituted or unsubstituted C1 to C10 sulfur group, a substituted or unsubstituted C1 to C10 ester group, and a substituted or unsubstituted C1 to C10 silyl group; or c) a C1 to C30 alkynyl group substituted or unsubstituted with at least one functional group selected from the group consisting of an epoxy group, a glycidoxy group, a vinyl group, an acryl group, a methacryl group, a carboxyl group, an amino group, a thiol group, a phosphoric acid group, a fluoro group, a chloro group, a bromo group, an iodine group, a hydroxy group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C1 to C10 ketone group, a substituted or unsubstituted C1 to C10 amine group, a substituted or unsubstituted C1 to C10 sulfur group, a substituted or unsubstituted C1 to C10 ester group, and a substituted or unsubstituted C1 to C10 silyl group.

12 . The graphene-containing coating film of claim 1 , wherein the M is Si or Ti.

13 . The graphene-containing coating film of claim 1 , wherein the graphene-containing coating film further comprises an additive selected from the group consisting of an inorganic powder, an organic additive, a

Assignees

• Hyundai Motor Co Ltd
• Korea Inst Ceramic Eng & Tech

Inventors

• Lee Kyu Geol
• Chang Kwang Il
• Hur Seung Hun

Classifications

• C08K3/00

  Use of inorganic substances as compounding ingredients · CPC title

• C01B32/194

  After-treatment · CPC title

• C01B2204/32

  Size or surface area · CPC title

• C08K3/04

  Carbon · CPC title

• C01B2204/04

  Specific amount of layers or specific thickness · CPC title