Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Corrosion-resistant graphene conductive coating on metal surface and preparation method thereof

A conductive coating and metal surface technology, which is applied in the field of graphene corrosion-resistant conductive coating and its preparation, can solve problems such as graphene derivative agglomeration, and achieve the effects of improving corrosion resistance, conductivity, and service life

Active Publication Date: 2021-01-26
UNIV OF SHANGHAI FOR SCI & TECH
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a graphene corrosion-resistant conductive coating for metal surfaces and a preparation method thereof, combining graphene with good water dispersibility and soluble inorganic corrosion inhibitors The co-deposition of additives solves the problem of agglomeration of graphene derivatives with high additions in the coating, prepares an oriented graphene coating parallel to the metal substrate, and utilizes the complementary effects of chemical corrosion inhibition and physical barrier to achieve coating at the same time. Conductive and corrosion-resistant properties of the layer

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Corrosion-resistant graphene conductive coating on metal surface and preparation method thereof
  • Corrosion-resistant graphene conductive coating on metal surface and preparation method thereof
  • Corrosion-resistant graphene conductive coating on metal surface and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] refer to Figure 1-2 , a graphene corrosion-resistant conductive coating for metal surfaces and a preparation method thereof, comprising:

[0020] A metal substrate, a coating skeleton parallel to the metal substrate, a chemical corrosion inhibitor arranged on the coating skeleton and a modifier for chemical modification of the coating skeleton, the coating skeleton is parallel Graphene aligned on the metal substrate can provide electronic pathways and a barrier to corrosive media.

[0021] Further, the chemical corrosion inhibitor is a soluble salt, including one or more of ammonium fluorozirconate, ammonium zirconium carbonate, ammonium phosphate, ammonium fluorotitanate, ammonium metavanadate, which can further enhance the corrosion resistance of the coating. corrosion.

[0022] Further, the modifier includes silane coupling agent modification, titanate coupling agent modification, benzenesulfonic acid modification and polyether ammonia modification, and the modifi...

Embodiment 1

[0030] Step 1: Using 500 mg graphene oxide as a precursor, introduce 184 mg p-aminobenzenesulfonic acid for sulfonation modification, improve the water dispersibility of graphene, and finally obtain a 4 mg / mL sulfonated graphene oxide aqueous dispersion;

[0031] Step 2: Mix the obtained modified graphene aqueous dispersion with the inorganic corrosion inhibitor ammonium zirconium carbonate at a mass ratio of 2:1, and ultrasonically disperse for 10 minutes to prepare a concentration of 0.1mol L -1 sedimentation fluid. The metal substrate is used as the anode, and the platinum sheet is used as the cathode. After the electric field of 20V is applied for 5 minutes, the modified graphene and the soluble corrosion inhibitor in the electrolyte are deposited on the surface of the metal substrate together, and after drying, an aligned graphene is formed. etch the conductive coating. The corrosion current density of the prepared orientation-aligned graphene corrosion-resistant conduct...

Embodiment 2

[0035] Step 1: Using 500 mg graphene oxide as a precursor, introduce 184 mg p-aminobenzenesulfonic acid for sulfonation modification, improve the water dispersibility of graphene, and finally obtain a 4 mg / mL sulfonated graphene oxide aqueous dispersion;

[0036] Step 2: Mix the obtained modified graphene aqueous dispersion with the inorganic corrosion inhibitor ammonium zirconium carbonate at a mass ratio of 4:1, and ultrasonically disperse for 10 minutes to prepare a concentration of 0.5mol L -1 sedimentation fluid. The metal substrate is used as the anode, and the platinum sheet is used as the cathode. After 15 minutes under the action of an electric field of 20V, the modified graphene and the soluble corrosion inhibitor in the electrolyte are co-deposited on the surface of the metal substrate, and the aligned graphene is formed after drying. Corrosion-resistant conductive coating. The corrosion current density of the prepared orientation-aligned graphene corrosion-resista...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Corrosion current densityaaaaaaaaaa
Conductivityaaaaaaaaaa
Corrosion current densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a corrosion-resistant graphene conductive coating on a metal surface and a preparation method thereof. The corrosion-resistant graphene conductive coating on the metal surfacecomprises a metal substrate, a coating framework arranged on the metal substrate in parallel, a chemical inhibitor arranged on the coating framework, and a modifier used for chemically modifying the coating framework, wherein the coating framework is graphene arranged parallel to the metal substrate. According to the corrosion-resistant graphene conductive coating on the metal surface and the preparation method thereof, by means of the deposition of the graphene with good water dispersibility and the soluble inorganic inhibitor, the problem of agglomeration of a large amount of added graphenederivatives in the coating is solved, and the graphene coating parallel to the metal substrate is prepared; and under the combined effect of the chemical inhibitor and physical barriers, the electrical conductivity and corrosion resistance of the coating are realized at the same time.

Description

technical field [0001] The invention relates to the technical field of chemical technology, in particular to a graphene corrosion-resistant conductive coating for metal surfaces and a preparation method thereof. Background technique [0002] Graphene material is one of the excellent additives in corrosion protection coatings due to its impermeability and high specific surface area. The dispersion and orientation of graphene sheets in the coating is the key to realize its physical barrier effect. The problem of graphene dispersion has been paid attention to by a large number of research work. The chemical modification of forming covalent bonds between them is the key to solve the problem of graphene dispersion. CN108531045A proposes a method for modifying graphene oxide with sulfonic acid, using the hydrophilicity of sulfonic acid groups to make the modified graphene derivatives have good water dispersibility. However, the related solutions to the problem of graphene orient...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C25D15/00C23F11/00C09D5/24C01B32/194
CPCC25D15/00C23F11/00C09D5/24C01B32/194
Inventor 李静费文翔孙亚辉邱汉迅杨俊和
Owner UNIV OF SHANGHAI FOR SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com