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

Method for preparing cysteine/polyaniline composite anti-corrosion functional material

A cysteine ​​and functional material technology, which is applied in the field of preparation of cysteine/polyaniline composite anti-corrosion functional materials, can solve the problems of hindering the migration of inhibitors, the anti-corrosion performance needs to be improved, and the polyaniline barrier performance is weakened. , to achieve the effect of improving solubility and dispersibility, improving corrosion protection effect, and improving poor mechanical properties

Inactive Publication Date: 2018-11-06
TONGJI UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyanilines also have disadvantages that cannot be ignored: the electrical conductivity is relatively low compared to metals, and their poor solubility in all common solvents and low solubility
However, the current preparation process of anti-corrosion materials is relatively complicated, and the anti-corrosion performance needs to be improved.
[0005] Chinese patent CN102732128A discloses a nano-polyaniline anti-corrosion coating, which is composed of A component and B component in a mass ratio of 1-5:1; wherein, A component: 60-95 parts of epoxy anti-corrosion coating; doped state 0.5-10 parts of polyaniline nanospheres; 0.5-5 parts of diluent; 0.5-10 parts of dispersant; component B: 10-40 parts of curing agent; 2 O / FeCl 2 / H 2 o 2 System preparation of polyaniline, its main defect is that it has little effect on improving the mechanical properties of polyaniline itself, and is not conducive to the dispersion of inhibitors, hinders the migration of inhibitors, and weakens the barrier properties of polyaniline itself

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 cysteine/polyaniline composite anti-corrosion functional material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Measure 0.49mL of aniline and 1.23mL of ethylbenzene respectively, mix and stir evenly, and use this as a hydrophobe, weigh 62.5mg of sodium lauryl sulfate, fully dissolve it in 6ml of deionized water, and use it as an emulsifier, add the emulsifier to the hydrophobic In the mixture, 7.5 mg of cysteine ​​was weighed and added therein as an inhibitor. The mixed solution was fully stirred at room temperature at a stirring speed of 1200 rpm for 70 min, then the mixture was cooled in an ice bath and ultrasonically treated for 300 seconds to emulsify it. Add 15wt% polyvinyl alcohol aqueous solution into the microemulsion, then weigh 1.23g of ammonium persulfate, dissolve it completely in 1.67mL of deionized water, and add it dropwise into the microemulsion at room temperature. After the reaction was completed, it was washed several times with deionized water until the upper layer solution was clear. Centrifuge the above solution in a centrifuge at a high speed of 7000rpm fo...

Embodiment 2

[0031] Measure 0.49mL of aniline and 1.23mL of ethylbenzene respectively, mix and stir evenly, and use this as a hydrophobe, weigh 62.5mg of sodium lauryl sulfate, fully dissolve it in 6ml of deionized water, and use it as an emulsifier, add the emulsifier to the hydrophobic In the mixture, 15 mg of cysteine ​​was weighed and added therein as an inhibitor. The mixed solution was fully stirred at room temperature at a stirring speed of 1200 rpm for 70 min, then the mixture was cooled in an ice bath and ultrasonically treated for 300 seconds to emulsify it. Add 15wt% polyvinyl alcohol aqueous solution into the microemulsion, then weigh 1.23g of ammonium persulfate, dissolve it completely in 1.67mL of deionized water, and add it dropwise into the microemulsion at room temperature. After the reaction was completed, it was washed several times with deionized water until the upper layer solution was clear. Centrifuge the above solution in a centrifuge at a high speed of 7000rpm for...

Embodiment 3

[0034] Measure 0.49mL of aniline and 1.23mL of ethylbenzene respectively, mix and stir evenly, and use this as a hydrophobe, weigh 62.5mg of sodium lauryl sulfate, fully dissolve it in 6ml of deionized water, and use it as an emulsifier, add the emulsifier to the hydrophobic In the mixture, 22.5 mg of cysteine ​​was weighed and added therein as an inhibitor. The mixed solution was fully stirred at room temperature at a stirring speed of 1200 rpm for 70 min, then the mixture was cooled in an ice bath and ultrasonically treated for 300 seconds to emulsify it. Add 15wt% polyvinyl alcohol aqueous solution into the microemulsion, then weigh 1.23g of ammonium persulfate, dissolve it completely in 1.67mL of deionized water, and add it dropwise into the microemulsion at room temperature. After the reaction was completed, it was washed several times with deionized water until the upper layer solution was clear. Centrifuge the above solution in a centrifuge at a high speed of 7000rpm f...

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to method for preparing a cysteine / polyaniline composite anti-corrosion functional material. An in-situ oxidation polymerization method is adopted as a synthesis method. The method comprises the following steps: uniformly mixing phenylamine and ethylbenzene as hydrophobe, dissolving lauryl sodium sulfate into deionzed water so as to obtain an emulsifier, putting the emulsifier into the hydrophobe, and adding an inhibitor, namely cysteine; sufficiently stirring the mixed solution to uniformly mix the components, and carrying out ultrasonic treatment in an ice bath processto emulsify the solution; further adding a water solution of polyvinyl alcohol as a stabilizer, sufficiently dissolving ammonium sulfate, putting into the mixed solution to carry out oxidation polymerization, finally centrifuging the solution after polymerization, washing, and drying, thereby obtaining a product. By adopting the method provided by the invention, a nano sphere structure of cysteine / polyaniline can be synthesized, defects that the polyaniline is poor in mechanical property, poor in dispersion, and the like, can be alleviated, the dispersion degree of the inhibitor can be improved, the release process of the inhibitor can be controlled, the corrosion resistance can be improved, and industrial production can be facilitated.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a preparation method of a cysteine / polyaniline composite anticorrosion functional material. Background technique [0002] Carbon steel has been widely used in many industries due to economic considerations and excellent properties, such as high structural strength and mechanical strength. However, if carbon steel is exposed to corrosive solutions during use without protection, severe corrosion will occur. Corrosion processes can take their toll, especially in industrial environments. Corrosion is an ongoing process and the best solution to the problem is prevention. [0003] The most common and cost-effective method for corrosion protection of steel structures is the use of organic coatings, which form a physical barrier that prevents the diffusion of aggressive substances to the metal surface and retards its corrosion. In recent years, polyaniline (PA...

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): C08L79/02C08K5/372C09D163/00C09D5/08C08G73/02
CPCC08G73/0266C08K5/3725C09D5/08C09D163/00C08L79/02
Inventor 王晓岗车颖利
Owner TONGJI UNIV
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com