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

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

Example Embodiment

[0025] Example 1 and Example 6: curing agents are used amine with diethylenetriamine butyl glycidyl ether adduct curing agent i.e. 539; E-51 epoxy resin are used in an epoxy resin; mesoporous fumed the average particle size of silicon oxide is 436nm, the average pore size of 20 nm; poly (styrene sulfonate) has an average molecular weight of 8 × 10 4 g / mol; average molecular weight polyethylenimine 1.8 × 10 3 g / mol.

[0026] Example 1

[0027] The present invention having a pH stimulus responsive smart repair coating ratio obtained (percentage by mass) feeding the following:

[0028]

[0029] 2-Chloro-methylbenzimidazole was dissolved in absolute ethanol, followed by addition of fumed silica mesoporous ultrasonic dispersion 30min, IH magnetic stirrer (speed of 600r / min). The above mixed system is placed in a vacuum oven at 25 deg.] C 12h, then centrifuged 30min, speed of 4000r / min, the supernatant was separated, the remaining solid was dried into the drying oven, 60 deg.]...

Example Embodiment

[0031] Example 2

[0032] The present invention having a pH stimulus responsive smart repair coating ratio obtained (percentage by mass) feeding the following:

[0033]

[0034]

[0035] Preparation Example 2 in the same Example 1, except that only the above-described various charge ratio;

[0036] The protective effect of the metal substrate has a very prominent in etching pH value not higher than 4.6. The lower the pH, the better the protection.

Example Embodiment

[0037] Example 3

[0038] The present invention having a pH stimulus responsive smart repair coating ratio obtained (percentage by mass) feeding the following:

[0039]

[0040] Preparation Example 3 The method of Example 1 with the same, and differ only in the above-described charge ratio;

[0041] The protective effect of the metal substrate has a very prominent in etching pH value not higher than 4.3. 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 Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap