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

Method for preparing conducting-state polyaniline by sanding

A technology of polyaniline and conductive state, which is applied in the field of preparation of conductive polyaniline, which can solve the problems of difficult control of grinding speed and strength, large amount of water emulsifier, large amount of waste acid, etc., and achieve easy control of reaction speed and reduce The effect of pressure, simple process

Inactive Publication Date: 2011-08-24
CHONGQING UNIV
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among the existing methods for preparing polyaniline, the solution method is famous for its fast polymerization rate and simple process, but the content of waste acid after the reaction is large, which brings great pressure to water treatment; the emulsion method is easy because of its reaction rate. Control, product particle size is small and evenly distributed, high molecular weight, good thermal stability, etc., is one of the most common process methods for preparing polyaniline, but this method has the problems of large water consumption and emulsifier consumption, and the reaction is complete. Finally, demulsification treatment will be carried out, and the filtrate after demulsification contains a large amount of emulsifier and waste acid, which brings great difficulties to wastewater treatment; the grinding method is usually manual grinding in a mortar, although it has the advantages of easy operation and Environmentally friendly, etc., but its grinding speed and strength are not easy to control, and the properties of the obtained products vary greatly, making it difficult to achieve large-scale production

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 0.02mol of aniline to 26.5ml of 2.9mol / L HCl solution, stir to mix evenly to form aniline hydrochloride solution; add 0.014mol of sodium dodecylbenzenesulfonate to the reactor, and slowly add the above-mentioned aniline salt salt solution, add 6.5g of glass beads with a diameter of 2mm and 6.5g of glass beads with a diameter of 3mm at the same time, and then sand-grind for 30min at a sand-milling speed of 200r / min to make it evenly mixed; add 0.016mol of ammonium persulfate to the above In the reactor, sand mill at a sand mill speed of 200r / min for 5 hours; filter with suction, and wash the filter cake with 0.1 mol / L HCl solution until the filtrate is colorless. After vacuum drying the filter cake at 60°C for 12 hours, take it out and grind it to obtain a conductive state polyaniline. The conductivity was measured with a four-probe conductivity meter to be 3.8 S / cm.

Embodiment 2

[0016] Add 0.02mol of aniline to 26.5ml of 2.9mol / L HCl solution, stir to mix evenly to form aniline hydrochloride solution; add 0.020mol of sodium dodecylbenzenesulfonate to the reactor, and slowly add the above-mentioned aniline salt salt solution, add 6.5g of glass beads with a diameter of 2mm and 6.5g of glass beads with a diameter of 3mm at the same time, and then sand at a sanding speed of 400r / min for 30min to make it evenly mixed; add 0.020mol of sodium persulfate to the above In the reactor, sand mill at 400r / min sand mill speed for 5h; filter with suction, wash the filter cake with 0.1 mol / L HCl solution until the filtrate is colorless, vacuum dry the filter cake at 60°C for 12 hours, take it out and grind it, and then get the conductive state polyaniline. The conductivity measured by a four-probe conductivity meter was 5.3 S / cm.

Embodiment 3

[0018] Add 0.02mol of aniline to 26.5ml of 2.9 mol / L HCl solution, stir to mix evenly to form aniline hydrochloride solution; add 0.022mol of sodium dodecylbenzenesulfonate to the reactor, and slowly add the above-mentioned aniline hydrochloride Salt solution, add 6.5g of glass beads with a diameter of 2mm and 6.5g of glass beads with a diameter of 3mm at the same time, then sand mill for 30min at a sand milling speed of 800r / min to make it evenly mixed; add 0.016mol of sodium persulfate to the above reaction Sand mill for 3 hours at 800r / min sand milling speed; filter with suction, wash the filter cake with 0.1 mol / L HCl solution until the filtrate is colorless, vacuum dry the filter cake at 60°C for 12 hours, take it out and grind it, and obtain the conductive state polyaniline. The conductivity was measured with a four-probe conductivity meter to be 4.1S / cm.

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
electrical conductivityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing conducting-state polyaniline by sanding, which comprises the following steps: dissolving aniline in an HCl solution, slowly adding the solution into a reactor filled with sodium dodecyl benzene sulfonate and glass beads, and evenly mixing by sanding at 200-1000 r / min; adding an oxidant, and sanding at room temperature to react for 1-5 hours; and after the reaction finishes, carrying out vacuum filtration, washing, drying and grinding to obtain the conducting-state polyaniline. The method obviously shortens the reaction time and reduces the water consumption, thereby effectively lowering the production cost and relieving the pressure of sewage treatment. The electric conductivity of the conducting-state polyaniline prepared according to the invention is up to 5.3 S / cm.

Description

technical field [0001] The invention belongs to a method for preparing conductive polyaniline, in particular to a method for preparing conductive polyaniline by a sand milling method. Background technique [0002] In recent years, as a new functional polymer material, polyaniline has high electrical conductivity, good redox performance, good environmental stability, special doping mechanism, simple synthesis method and special The optical and magnetic properties have received extensive attention. [0003] Among the existing methods for preparing polyaniline, the solution method is famous for its fast polymerization rate and simple process, but the content of waste acid after the reaction is large, which brings great pressure to water treatment; the emulsion method is easy because of its reaction rate. Control, product particle size is small and evenly distributed, high molecular weight, good thermal stability, etc., is one of the most common process methods for preparing ...

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): C08G73/02
Inventor 马利甘孟瑜谷静连严俊
Owner CHONGQING UNIV
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