Dissertation > Excellent graduate degree dissertation topics show

Research and Development of Micro-nano Conductive Polyaniline Composite Particles and Waterborne Anti-corrosion Coatings

Author: XuXiaoZuo
Tutor: ShiYuanChang
School: Shandong University
Course: Materials Physical Chemistry,
Keywords: nanometer/micrometer polyaniline core-shell/hollow waterborne anticorrosion
CLC: TQ637
Type: Master's thesis
Year: 2010
Downloads: 375
Quote: 1
Read: Download Dissertation

Abstract


It is urgent to solve corrosion problems, as metals are easy to be corrupted in acid circumstance and sea water. Metal corrosion causes great economic loss and damage to industry and society. And coating is the most important and economical method of all anticorrosive methods. However the anticorrosion of the traditional coating is not very ideal due to the limit of material properties and technology. And a lot of the coatings contain heavy metals that induce the environment polluted. So research and development of a green corrosion inhibitor becomes a focal point of the corrosion protection field.Conductive polyaniline as new material of functional polymer makes itself a focus because of its simple synthesis methods, excellent environmental stability and wide application. Polyaniline as a corrosion inhibitor has no any environmental side-effect compare with other conventional corrosion inhibitors, such as chromate, and it is a green corrosion inhibitor accord with times and science development. But it has poor processability because of its rigid structure. In this paper, core-shell structure is applied to overcome the defects confining the application of polyaniline.First, Poly(methyl methacrylate-butyl acrylate-acrylic acid) [P(MMA-BA-AA)] /polyaniline (PANI) core-shell complex particles were synthesized with a two-step miniemulsion polymerization method with P(MMA-BA-AA) as the core and PANI as the shell. The first step was to prepare P(MMA-BA-AA) latex particles as the core via miniemulsion polymerization. The second step was to prepare P(MMA-BA-AA) /PANI core-shell particles. The aniline monomer was added into the mixture of water and core particles. The aniline monomer could be attracted near the outer surface of the core particles. The polymerization of aniline was started under the action of APS. The final product was the desired core-shell nano-particles. At the same time, using 4-styrenesulfonic acid sodium salt (NaSS) as sulfonation monomers, sulfonated polystyrene microspheres were successfully prepared by dispersion polymerization. Using this kind of sulfonated PS spheres as core templates, PS-polyaniline(PANI) core-shell microspheres were produced. After removing the cores, uniform hollow conductive polymer microspheres were obtained. TEM, SEM and FTIR are used to character the resulting products. The optimized conditions for core-shell or hollow particles preparation were decided preliminary.Then waterborne bisphenol A epoxy resin emulsion was prepared by phase inversion. At last, a series of polyaniline/epoxy anticorrosive coatings were prepared, and theirs anticorrosive performance in 3.5% NaCl solution was studied. The outcome shows that the anticorrosive coatings contain PANI core-shell particles have good anticorrosion property.

Related Dissertations

  1. The Preparation of Polyaniline-Metal Complex and the Study on Its Catalytical Property,O634
  2. Preparation and Anticorrosion Properties of Doped Polyaniline/Epoxy Coating,TQ637
  3. Preparation and Property Study of Polyaniline/Polyester Composite Conductive Fabric,TS195.6
  4. Research on Electrochemical Synthesis and Application of Conductive Polyaniline,O633.21
  5. Polyaniline / short fiber reinforced natural rubber properties,TQ330.1
  6. SnO 2 / CNTs composite Controllable Preparation and Gas Sensitivity Study,TB383.1
  7. Preparation of polyaniline nanostructures , characterization and biomedical applications,TB383.1
  8. Synthesis and Characterization of Polyaniline Micro/nano Structure and Its Composites,TB383.1
  9. Tuning Fluorescence and Catalytic Characterization of Polyaniline,O643.32
  10. Research of the Influence of La2O3 on the Formation and Performance of PANI Nanofiber Materials,TB383.1
  11. The Study of Waterborne Materials Painting,J205
  12. Modifed Research of UV Coatings,TQ637
  13. Pre Paration of Water-based Epoxy Anti-corrosion Coating,TQ637
  14. Preparation of the Composite Coatings on the Carbon Steel Surface and Their Anticorrosion Properties in Seawater,TG174.4
  15. Preparation and Supershydrophobic Modification of TiO2 Nanotube Arrays and Research on Its Anticorrosion Propeties,TB383.1
  16. Preparation and properties of silicone modified waterborne polyurethane coating agent,TS195.2
  17. In-situ Composition of Polyaniline and Titanium Oxides,O634
  18. Study on Modification of Waterborne Polyurethane,TQ323.8
  19. Template-free Synthesis and Properties of Polyaniline Nanostructures,TB383.1
  20. Multigenerational Hyperbranched Waterborne Polyurethane Synthesis and Characterization of Structure and Properties,O631.3
  21. Study on Synthesis and Properties of Conductive Polyaniline and PANI/GO Composite Material,TB383.1

CLC: > Industrial Technology > Chemical Industry > Paint Industry > Special paints
© 2012 www.DissertationTopic.Net  Mobile