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

Modified phenolic epoxy coating as well as preparation method and application thereof

A technology of novolac epoxy and diphenol-based propane epoxy resin, which is applied in the field of modified novolac epoxy coatings and its preparation, can solve the problems of poor wear and erosion resistance, easy aging, and no reports, etc. Anti-corrosion performance, the effect of economical price

Active Publication Date: 2020-11-17
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional coating protection technology for water injection pipes has the following limitations: the inherent defects such as pinholes are unavoidable in the body of the organic coating, the wear resistance and erosion resistance are poor, and the coating is difficult to prevent Cl in high temperature environment. - 、H 2 O and O 2 Penetration of small molecules such as, and easy aging
However, so far, the research and application of graphene-modified phenolic epoxy coatings are mainly concentrated in the field of marine anti-corrosion, most of which involve marine environments at room temperature and low temperature. Application Demonstration Project

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
  • Modified phenolic epoxy coating as well as preparation method and application thereof
  • Modified phenolic epoxy coating as well as preparation method and application thereof
  • Modified phenolic epoxy coating as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0052] The preparation method of the 130-degree Celsius high-temperature-resistant functionalized reduced graphene oxide modified phenolic epoxy coating for the above-mentioned water injection well comprises the following steps in terms of the above mass percentage:

[0053] Step 1: adding the functionalized reduced graphene oxide into an organic solvent, and ultrasonicating to obtain a functionalized reduced graphene oxide dispersion, wherein the ultrasonication time is 60-90min, and the ultrasonic frequency is 7KHZ.

[0054] Step 2: Add 7% of the total mass of diphenol-based propane epoxy resin to the functionalized reduced graphene oxide dispersion in step 1, mechanically stir evenly, and ultrasonicate to obtain a functionalized reduced graphene oxide epoxy resin mixture , wrap it with diphenol-based propane epoxy resin to prevent agglomeration, and the number of layers of functionalized reduced graphene oxide after dispersion is 1 to 4 layers. Among them, the ultrasonic ti...

Embodiment 1

[0061] The components of the coating and their percentages by weight are as follows:

[0062] Diphenolic propane epoxy resin: 12%

[0063] Epoxy Novolac: 35%

[0064] Functionalized reduced graphene oxide: 0.4%

[0065] Pigments and fillers: 36%

[0066] Additives: 0.6%

[0067] Curing agent: 8.5%

[0068] Organic solvents: 7.5%

[0069] The specific surface area of ​​the functionalized reduced graphene oxide is 270-350m 2 / g, the number of layers of functionalized reduced graphene oxide is 4-7 layers.

[0070] Step 1: Weigh 0.4% functionalized reduced graphene oxide, mix it with 7.5% organic solvent, and ultrasonically disperse for 1.5 hours to obtain a functionalized reduced graphene oxide dispersion. Wherein, the organic solvent is xylene;

[0071] Functionalized reduced graphene oxide (F-RGO) is specifically obtained as follows:

[0072] Step 1a: Add 0.8g nanometer zirconia (ZrO2) in 200g dehydrated alcohol 2 ) and 24g silane coupling agent 3-aminopropyltriethoxy...

Embodiment 2

[0084] The components of the paint and their weight ratios are as follows:

[0085] Diphenolic propane epoxy resin: 7%

[0086] Epoxy Novolac: 40%

[0087] Functionalized reduced graphene oxide: 0.5%

[0088] Pigments and fillers: 36.15%

[0089] Additives: 0.35%

[0090] Curing agent: 8%

[0091] Organic solvent: 8%

[0092] The specific surface area of ​​the functionalized reduced graphene oxide is 270-350m 2 / g, the number of layers of functionalized reduced graphene oxide is 4-7 layers.

[0093] Step 1: Weigh 0.5% functionalized reduced graphene oxide, mix it with 8% organic solvent, and ultrasonicate to obtain a functionalized reduced graphene oxide dispersion, wherein the ultrasonic time is 60min, and the ultrasonic frequency is 7KHZ; the organic solvent is positive Butanol;

[0094] Functionalized reduced graphene oxide (F-RGO) is specifically obtained as follows:

[0095] Step 1a: add 1g nano zirconium dioxide (ZrO2) in 200g absolute ethanol 2 ) and 30g silan...

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
Specific surface areaaaaaaaaaaa
Particle sizeaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to modified phenolic epoxy coating as well as a preparation method and application thereof. The method comprises the following steps: 1, adding functionalized reduced graphene oxide into an organic solvent, and uniformly mixing to obtain a dispersion liquid A; 2, adding diphenol propane epoxy resin into the dispersion liquid A, and uniformly dispersing to obtain a dispersionliquid B; 3, adding diphenol propane epoxy resin into the dispersion liquid B, uniformly mixing to obtain a dispersion liquid C, sequentially adding a dispersing aid, novolac epoxy resin and pigment fillers into the dispersion liquid C, and uniformly mixing to obtain coating a; 4, grinding the coating a to enable the fineness of the coating a to be less than 15 microns, then adding a coupling agent, an adhesion promoter, an antifoaming agent and a leveling agent, and uniformly mixing to obtain coating b; and 5, uniformly mixing the coating b with alicyclic modified amine to obtain the modifiedphenolic epoxy coating. An oil pipe coated with the prepared coating can serve for a long time under the water injection working condition at 130 DEG C , and has excellent corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of corrosion and protection of oil well pipes, in particular to a modified phenolic epoxy coating and its preparation method and application. Background technique [0002] Coating protection technology is the earliest corrosion control measure for water injection well strings used in oilfields, and has achieved good economic effects. However, the traditional coating protection technology for water injection pipes has the following limitations: the inherent defects such as pinholes are unavoidable in the body of the organic coating, the wear resistance and erosion resistance are poor, and the coating is difficult to prevent Cl in high temperature environment. - 、H 2 O and O 2 Penetration of small molecules such as, and easy aging. [0003] At present, the recommended operating temperature of epoxy-coated oil pipes used in water injection wells in oil fields generally does not exceed 80 degrees Celsius. Ho...

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): C09D163/04C09D163/00C09D5/08C09D7/61C09D7/47C09D7/62C09D7/63C09D7/80B05D1/02B05D3/02B05D7/24
CPCC09D163/04C09D5/08C09D5/18C09D7/62C09D7/61C09D7/47C09D7/63C09D7/80B05D7/24B05D1/02B05D3/0254C08K2003/2244C08L2205/02C08L2203/18C08L2201/08C08L63/00C08K13/06C08K9/06C08K9/10C08K3/22C08K3/042C08K3/04C08K3/34
Inventor 冯春朱丽娟宋雅聪曹亚琼
Owner BC P INC CHINA NAT PETROLEUM CORP
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