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

Reinforcing steel bar corrosion inhibitor of alkanolamide series and preparation method and application of reinforcing steel bar corrosion inhibitor

A technology of steel bar rust inhibitor and alkanolamide, applied in the field of steel bar rust inhibitor and alkanolamide type steel bar rust inhibitor, can solve the problem of high application cost, achieve convenient implementation, reduce electron transfer, and inhibit redox reaction Effect

Active Publication Date: 2016-01-27
江苏道成不锈钢管业有限公司 +2
View PDF16 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the raw materials are not commonly used chemical raw materials, the application cost is too high

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
  • Reinforcing steel bar corrosion inhibitor of alkanolamide series and preparation method and application of reinforcing steel bar corrosion inhibitor
  • Reinforcing steel bar corrosion inhibitor of alkanolamide series and preparation method and application of reinforcing steel bar corrosion inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 284g of stearic acid and 1000g of xylene into the reaction kettle, stir evenly, add 120g of diethanolamine, add 8g of 4-dimethylaminopyridine, heat up to 140°C, and react for 10h to obtain a crude rust inhibitor product. Negative pressure distillation reclaims solvent xylene to obtain the novel rust inhibitor for steel bars.

Embodiment 2

[0029] Add 200g of lauric acid and 1200g of toluene into the reaction kettle, stir evenly, add 266g of diisopropanolamine, add 15g of 1-hydroxybenzotriazole, raise the temperature to 110°C, and react for 12 hours to obtain the crude rust inhibitor product. Negative pressure distillation reclaims the solvent toluene to obtain the novel rust inhibitor for steel bars.

Embodiment 3

[0031] Add 200g octanoic acid and 1000g tetrahydrofuran to the reaction kettle, stir evenly, add 140g ethanolamine, add 3.4g 2-(7-azobenzotriazole)-N,N,N',N'-tetramethyluronium hexafluoro Phosphate ester and 3.4 g of benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate were heated up to 70° C. and reacted for 6 hours to obtain a crude rust inhibitor product. Negative pressure distillation reclaims the solvent toluene to obtain the novel rust inhibitor for steel bars.

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 discloses reinforcing steel bar corrosion inhibitor of alkanolamide series and a preparation method and application of the reinforcing steel bar corrosion inhibitor. The preparation method of the reinforcing steel bar corrosion inhibitor of alkanolamide series comprises the steps of adding organic carboxylic acid or organic acyl chloride to solvent, adding alcohol amine for forming a reaction system, conducting a reaction for 3-12 hours at the temperature of 40-180 DEG C under the action of a catalyst, and obtaining the reinforcing steel bar corrosion inhibitor of alkanolamide series. The reinforcing steel bar corrosion inhibitor of alkanolamide series is simple in synthetic process and has the advantages of being efficient in corrosion inhibition, green, environmentally friendly and the like.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to a steel bar rust inhibitor, in particular to an alkanolamide-based steel bar rust inhibitor, a preparation method and an application thereof. Background technique [0002] Steel corrosion, as the main cause of corrosion damage to concrete structures, has been widely concerned by scientific and technological workers at home and abroad. The steel rust inhibitor is recognized by international organizations such as the American Concrete Institute (ACI) and the International Federation for Research and Experimentation on Materials and Structures (RILEM) as one of the effective, economical and convenient methods to solve this problem. [0003] Among them, nitrite-based inorganic rust inhibitors were used earlier and are representative, such as: the mixture of calcium nitrite, organic amine and organic acid has been reported in patents US6340438 and US5527388, which can play a ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C07C231/02C07C233/18
Inventor 赵旦蔡景顺石亮姜骞陈翠翠刘建忠沙建芳穆松
Owner 江苏道成不锈钢管业有限公司
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