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

Two-dimensional nano-hybrid composite anticorrosive coating filler as well as preparation method and application thereof

A two-dimensional nano, anti-corrosion coating technology, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., to achieve the effect of improving corrosion resistance

Active Publication Date: 2021-08-27
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are still some challenges in the application of graphene-based nanomaterials in polymer coatings.

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
  • Two-dimensional nano-hybrid composite anticorrosive coating filler as well as preparation method and application thereof
  • Two-dimensional nano-hybrid composite anticorrosive coating filler as well as preparation method and application thereof
  • Two-dimensional nano-hybrid composite anticorrosive coating filler as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In this example, silane-functionalized graphene oxide nanosheets / g-C 3 N 4 The nanosheets were used as anti-corrosion nanofillers in a waterborne epoxy coating and applied by paint brush on a clean steel substrate.

[0051] g-C 3 N 4 Preparation of nanosheets: urea was used as a nitrogen-rich precursor, synthesized after heat treatment at 550°C for 2 hours in an alumina crucible with a cover, and then used.

[0052] Then, a two-dimensional nano-hybrid material with a mass ratio of graphene oxide and g-C3N4 nanosheets of 1:1 was prepared by hydrothermal method: 0.5 g graphene oxide (50 ml graphene oxide with a concentration of 10 mg / ml) and 0.5 g g-C 3 N 4The nanosheets were distributed in 20ml ethanol, the bath was ultrasonicated for 60 minutes, followed by stirring at room temperature for 3h. The resulting mixture was transferred to a PTFE-lined stainless steel autoclave at 120 °C for 12 h to obtain graphene oxide / g-C 3 N 4 Two-dimensional nanohybridization of ...

Embodiment 2

[0065] In this example, silane-functionalized graphene oxide nanosheets / g-C 3 N 4 The nanosheets were used as anti-corrosion nanofillers in a waterborne epoxy coating and applied by paint brush on a clean steel substrate.

[0066] Using urea as a nitrogen-rich precursor, heat treatment in an alumina crucible to 550 °C for 2 hours to synthesize g-C 3 N 4 Nanosheets. Then, graphene oxide / g-C was prepared by solution mixing method 3 N 4 Nanosheets vs Graphene Oxide vs g-C 3 N 4 A two-dimensional nano-hybrid with a nanosheet weight ratio of 1:1. To this end, 50 mL of graphene oxide (concentration of graphene oxide solution is 10 mg / mL) was bath-sonicated in 50 mL of deionized water for 60 min. In another beaker, 0.5g g-C 3 N 4 The nanosheets were dispersed in 100 mL deionized water, and the bath was ultrasonically treated for 60 min. Then, it was added to the graphene oxide solution, continued bath sonication for 60 min, and then obtained by rotary evaporation at 80 °C....

Embodiment 3

[0071] Using the in situ synthesis method, 0.5 g of urea as a nitrogen-rich precursor was dissolved in 20 mL of deionized water by stirring at room temperature, and then 50 mL of graphene oxide solution (the concentration of graphene oxide solution was 10 mg / mL) was added. Stir vigorously at room temperature for 3 hours, and then dry at 80°C for 24 hours. The resulting product is placed in an alumina crucible with a cover, and heat-treated in a muffle furnace at 550°C for 2 hours to obtain graphene oxide / g-C 3 N 4 Nanosheet two-dimensional nanohybrid.

[0072] In the next step, for graphene oxide / g-C 3 N 4 Two-dimensional nanohybrids of nanosheets were functionalized with 3-aminopropyltriethoxysilane: 3-aminopropyltriethoxysilane was dissolved in deionized water at a volume ratio of 1:19, and 0.5 g of Two-dimensional nanohybrids. Then, the suspension was stirred and heated at 80° C. for 12 hours in a reflux system. Finally, the resulting suspension was centrifuged, washed...

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

No PUM Login to View More

Abstract

The invention relates to an organic coating, in particular to a two-dimensional nano-hybrid composite anticorrosive coating filler as well as a preparation method and application thereof. The two-dimensional flaky nano anticorrosive filler is a two-dimensional nano material which is subjected to hybridization and functionalization treatment on a graphene-based nano sheet / g-C3N4 nano sheet; wherein the weight ratio of the graphene-based nanosheet to the g-C3N4 nano sheet is (1: 0.1)-(1: 10). In order to improve the distribution performance of the two-dimensional nano-hybrid material and prevent agglomeration of the two-dimensional nano-hybrid material, the two-dimensional nano-hybrid material is subjected to functionalization treatment by using alkoxy silane or a conductive polymer before a polymer matrix is added, and the functionalized two-dimensional nano-hybrid material with low mass percent is added into a polymer coating through a solution mixing method. Two-dimensional nano-hybridization enables different flaky nano-materials to exert respective advantages in the same coating system, abandons the defects of the flaky nano-materials and prevents the flaky nano-materials from being agglomerated in the coating.

Description

technical field [0001] The invention relates to organic coatings, in particular to a two-dimensional nano-hybrid composite anti-corrosion coating filler and its preparation method and application. Background technique [0002] Organic coatings (such as epoxies, polyurethanes, acrylics, alkyds, etc.) are widely used to protect metal components from corrosion and environmental parameters. Organic coatings serve as barriers for the diffusion of corrosive media into metallic structures, protecting the metal substrate from aggressive electrolytes. [0003] Organic coatings are composed of resins, hardeners, solvents and additives, and anti-corrosion fillers are added to the composition to increase the service life of organic coatings. The anti-corrosion filler can improve the anti-corrosion efficiency of the organic coating through physical and chemical actions. Its physical mechanism is to reduce coating defects, fill organic coating pores generated during coating curing, enha...

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): C09D5/08C09D7/62C09D163/00
CPCC09D5/08C09D7/62C09D163/00C09D7/70C08K2201/011C08K9/06C08K3/042C08K3/28C08K7/00
Inventor 段继周周子扬塞皮德·波哈森纪小红侯保荣
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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