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

PH stimulation response intelligent repair coating and preparation method thereof

A technology of intelligent repair and stimulus response, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of corrosion inhibitor carrier damage, difficult to achieve, unable to play a sustainable role, etc., to achieve excellent corrosion inhibition performance, intelligent Controlled release effect

Pending Publication Date: 2021-08-31
JIANGSU UNIV OF SCI & TECH
View PDF14 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the corrosion inhibitor-based self-healing anti-corrosion coatings have certain defects, such as the lack of a stimuli-responsive coating on the surface of the corrosion inhibitor carrier, which cannot realize the intelligent and controllable release of the corrosion inhibitor; or the surface of the corrosion inhibitor carrier There is a stimuli-responsive coating layer, but the corrosion inhibitor carrier is destroyed and cannot continue to function under subsequent conditions; or the surface coating process load of the corrosion inhibitor carrier is difficult to achieve

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
  • PH stimulation response intelligent repair coating and preparation method thereof
  • PH stimulation response intelligent repair coating and preparation method thereof
  • PH stimulation response intelligent repair coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In embodiment 1 and embodiment 6: curing agent all adopts the adduct of diethylenetriamine and butyl glycidyl ether and is 539 curing agent; Epoxy resin all adopts E-51 epoxy resin; The average particle diameter of silicon oxide is 436nm, and the average pore diameter is 20nm; the average molecular weight of poly(sodium p-styrene sulfonate) is 8×10 4 g / mol; the average molecular weight of polyethyleneimine is 1.8×10 3 g / mol.

[0026] Example 1

[0027] According to the present invention, a pH-stimulus-responsive intelligent repair coating is prepared according to the following feeding ratio (mass percentage):

[0028]

[0029] Dissolve 2-chloromethylbenzimidazole in absolute ethanol, then add mesoporous fumed silica, disperse by ultrasonic wave for 30min, and stir for 1h with a magnetic stirrer (rotating speed: 600r / min). Place the above mixed system in a vacuum drying oven at 25°C for 12 hours, then centrifuge for 30 minutes at a speed of 4000r / min, separate the ...

Embodiment 2

[0032] According to the present invention, a pH-stimulus-responsive intelligent repair coating is prepared according to the following feeding ratio (mass percentage):

[0033]

[0034]

[0035] The preparation method of embodiment 2 is the same as embodiment 1, and the difference is only that the above-mentioned feeding ratio is different;

[0036] When the pH value of the corrosive medium is not higher than 4.6, it has a very prominent protective effect on the metal substrate. The lower the pH, the better the protection.

Embodiment 3

[0038] According to the present invention, a pH-stimulus-responsive intelligent repair coating is prepared according to the following feeding ratio (mass percentage):

[0039]

[0040] The preparation method of embodiment 3 is the same as that of embodiment 1, and the difference is only that the above-mentioned feeding ratio is different;

[0041] When the pH value of the corrosive medium is not higher than 4.3, it has a very prominent protective effect on the metal substrate. The lower the pH, the better the protection.

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
The average particle sizeaaaaaaaaaa
Average pore sizeaaaaaaaaaa
Average molecular weightaaaaaaaaaa
Login to View More

Abstract

The invention discloses a pH stimulation response intelligent repair coating and a preparation method thereof. The pH stimulation response intelligent repair coating comprises a corrosion inhibitor, a corrosion inhibitor carrier, a coating layer, a film forming substance, a curing agent and a solvent, wherein the corrosion inhibitor is 2-chloromethyl benzimidazole, the corrosion inhibitor carrier is mesoporous fumed silica, the coating layer is poly (sodium p-styrenesulfonate) and polyethyleneimine, the poly (sodium p-styrenesulfonate) and the polyethyleneimine sequentially coat the surface of the mesoporous fumed silica loaded with the 2-chloromethyl benzimidazole, epoxy resin is used as a film forming substance, and absolute ethyl alcohol is used as a solvent. When the pH value of a corrosive medium is not higher than 4, the prepared pH stimuli-responsive intelligent repair coating has a very prominent protection effect on a metal substrate. The lower the pH value is, the better the protection effect is.

Description

technical field [0001] The invention relates to the technical field of organic polymer coatings, in particular to a pH stimulus-responsive intelligent repair coating and a preparation method thereof. Background technique [0002] Coatings are an important means of protection for large-scale facilities such as cross-sea bridges, rail transit, coastal energy and power, and port storage. However, traditional anti-corrosion coatings have certain disadvantages. Once the coating on the metal surface cracks, the exposed metal substrate will accelerate corrosion. Especially in the marine environment, the coating is more vulnerable to damage, and metal corrosion causes major economic losses and even safety accidents. Although there are many methods to detect and repair coating cracks, these methods have problems such as time-consuming and complicated processes, and are only suitable for obvious external damage, and cannot repair cracks inside the coating that are difficult to detect...

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): C09D163/00C09D5/08C09D7/63C09D7/62C09D7/65
CPCC09D163/00C09D5/08C09D7/63C09D7/62C09D7/70C09D7/65
Inventor 李照磊赵宣宣王晓东周立犇陈立庄郭伟杰周海骏
Owner JIANGSU UNIV OF 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