Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing aqueous graphene polymer dispersion

A polymer and graphene technology, which is applied in the production of bulk chemicals, coatings, anti-corrosion coatings, etc., can solve the problems of high dispersion cost, dispersion stability, unsatisfactory dispersion degree, and difficult to perfectly reflect the protective performance of graphene.

Inactive Publication Date: 2019-09-20
JIANGSU RONGCHANG NEW MATERIAL TECH +1
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these measures that can be taken in the subsequent stages of graphene preparation will not only strengthen the bonding force of graphene between coating materials, but will also change the electronic conductivity and structure of graphene to a certain extent. Correspondingly weakens some of the properties of graphene as an excellent protective material
[0003] In order to solve the good dispersion state of graphene in polymers, the pre-dispersion of graphene is very urgent (many anti-corrosion water-based resins are water-emulsion type, which is not suitable for grinding), and the existing graphene dispersions are almost all made of graphite Graphene and dispersing wetting agent are co-ground together, so not only the dispersion cost is high, but also the dispersion stability and degree of dispersion are not ideal, so that it is difficult to perfectly reflect the protective performance of graphene

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
  • Method for preparing aqueous graphene polymer dispersion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 10 parts of graphite, add 50 parts of acrylic acid and 50 parts of propylene glycol methyl ether, mix well, add to a closed container, and pass through CO 2 Protect the gas, and ultrasonically disperse for 2-3 hours, then transfer to a sealed container made of polytetrafluoroethylene, and seal it with a polytetrafluoroethylene filter membrane.

[0031] Raise the temperature to about 50°C, start stirring (stirring speed is set to 500rpm), and continue to inject CO 2 , when the air pressure reaches 12-15Mpa, keep stirring for 24 hours, and then release CO 2 , take out the product and ultrasonically disperse it for about 3 hours, centrifugally disperse, inject the supernatant liquid into another reactor (with stirring, dropping device, reflux device), start stirring and raise the temperature to 100°C, add 10 parts of acrylic acid dropwise The mixture of methyl ester, 5 parts of acrylic acid and 2 parts of di-tert-amyl peroxide is dripped in 2-3 hours, the temperatur...

Embodiment 2

[0033] Weigh 10 parts of graphite, add 50 parts of acrylic acid, 30 parts of acrylamide, and 50 parts of propylene glycol methyl ether, mix well, add it into a closed container, and pass CO 2 Protect the gas, and ultrasonically disperse for 2-3 hours, then transfer to a sealed container made of polytetrafluoroethylene, and seal it with a polytetrafluoroethylene filter membrane.

[0034] Raise the temperature to about 50°C, start stirring (stirring speed is set to 500rpm), and continue to inject CO 2 , when the air pressure reaches 12-15Mpa, keep stirring for 24 hours, and then release CO 2 , take out the product and ultrasonically disperse it for about 3 hours, centrifugally disperse, inject the supernatant liquid into another reactor (with stirring, dropping device, reflux device), start stirring and raise the temperature to 100°C, add 10 parts of acrylic acid dropwise The mixture of methyl ester, 5 parts of acrylic acid and 2 parts of di-tert-amyl peroxide is dripped in 2-3...

Embodiment 3

[0036] Weigh 10 parts of graphite, add 50 parts of acrylic acid, 5 parts of ethyl acrylate, and 50 parts of propylene glycol methyl ether, mix well, add it into a closed container, and pass CO 2 Protect the gas, and ultrasonically disperse for 2-3 hours, then transfer to a sealed container made of polytetrafluoroethylene, and seal it with a polytetrafluoroethylene filter membrane.

[0037] Raise the temperature to about 50°C, start stirring (stirring speed is set to 500rpm), and continue to inject CO 2 , when the air pressure reaches 12-15Mpa, keep stirring for 24 hours, and then release CO 2 , take out the product and ultrasonically disperse it for about 3 hours, centrifugally disperse, inject the supernatant liquid into another reactor (with stirring, dropping device, reflux device), start stirring and raise the temperature to 100°C, add 10 parts of acrylic acid dropwise The mixture of methyl ester, 5 parts of acrylic acid and 2 parts of di-tert-amyl peroxide is dripped in ...

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

In the process of preparing graphene by a supercritical technology, an active monomer with a double bond is used as a co-intercalating agent to obtain a stably-dispersed aqueous graphene dispersed slurry, and in-situ reaction and neutralization are carried out on the double bond of the active monomer in the dispersed slurry and a substance with a double bond to form the aqueous polymer-coated graphene dispersion. The dispersion can be directly added to any other water-based anticorrosive coating in order to significantly improve the protection performances of the anticorrosive coating.

Description

technical field [0001] The invention belongs to the field of polymer substance synthesis, and in particular relates to a graphene polymer aqueous dispersion, a preparation method thereof, and an application of the aqueous dispersion. Background technique [0002] As an inert layered material, graphene has excellent environmental corrosion resistance in the air and good barrier properties to water and oxidizing media, plus excellent transport properties to conductive particles and is used in anti-corrosion coating materials. favored among. However, due to the large diameter-to-horizon ratio of graphene itself, uniform dispersion in polymer materials has always been a problem. Measures such as sulfonation and conversion of graphene into graphene oxide are all to improve the compatibility of graphene in polymers. One of the corresponding measures taken, such as patent CN105255479A, is to prepare graphene into graphene oxide aqueous dispersion. However, these measures that can...

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): C08F292/00C08F220/06C08F220/14C08F212/08C08F220/56C09D5/08C09D7/65
CPCC08F292/00C09D5/08C09D7/65C08F220/06Y02P20/54
Inventor 陈群常春祝红良王维张经纬周铭
Owner JIANGSU RONGCHANG NEW MATERIAL TECH
PatSnap Eureka logo

PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.

X (Twitter)LinkedInYouTubeSubstack

© 2026 PatSnap. All rights reserved. 

Terms of Service

 | 

Privacy policy

 | 

Modern Slavery Act Transparency Statement