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Polyaniline (PANI) as a new type of functional polymer materials, the synthesis process is simple, unique doping mechanism has good redox and environmental stability, the higher doping conductivity and specific optical, electrical magnetic properties received extensive attention. But the rigidity of the the polyaniline molecule chain skeleton strong intermolecular forces, almost insoluble and infusible the late processing difficulty severely limits its practical promotion and application in various fields. The composite modification technology can effectively improve its processing performance, to obtain a composite material having a variety of functional, and broaden the application areas for the conductive polyaniline. Inorganic composite particles of polyaniline modified to improve the anti-corrosion properties of polyaniline coating. Polyaniline / inorganic composite material, the dopants, oxidant, the concentration of the inorganic particles, and the reaction time and the content of the inorganic particles in the composite doping ratio of the composite will, conductivity, particle size, structure and composition and its antiseptic properties of the composite coating impact. This paper mainly discusses the influence of the of aniline polymerization conditions on the coating properties of polyaniline, polyaniline / dysprosium oxide (PANI/Dy2O3) composite epoxy (EP). The thesis is divided into two parts: (1) aniline polymerization process conditions PANI and PANI / EP (P / EP), PANI/Dy2O3-mix/EP (PD-M / EP) coating performance. The four-probe conductivity meter, laser particle size analyzer, electrochemical workstation of sodium dodecyl benzene sulfonate (SDBS) dosage, Dy2O3 consumption, the amount of ammonium persulfate (APS), reaction time and PANI amount of PANI and P / EP, PD-M/EP coating performance. The study showed that: wt PANT% = 25%, nSDBS / NAn = 0.8% 9% wt Dy 2O3 = NaPS / NAn = 0.8, reaction time = 4h, PD-M/EP coatings antiseptic properties. The PD-M/EP coating corrosion potential than P / EP coated rising to 878mV, anti-corrosion properties of the coating has been greatly improved. The the ② aniline emulsion polymerization process conditions PANI/Dy2O3- (in-situ) (PANI/Dy2O3-I) PANI/Dy2O3 -I/EP (PD-I/EP) coating performance. Four-probe method, laser particle size analysis, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), Tafel curve analysis investigate the PANI/Dy2O3- of the dosage I, SDBS dosage, Dy2O3 dosage APS dosage and reaction time of PANI/Dy2O3-I its PD-I/EP coating performance. The findings: nSDBS / NAn = Note 0.8 NDY O/nAn23 = 1/50, NaPS / NAn = 0.8, reaction time = 4H the PANI / Dy 2O3I?% Wt? = PANI/Dy2O3-I and PD-I / EP properties of the coatings is preferred, the corrosion potential of the the PD-I/EP coatings Max (0.122V), the corrosion potential than PD-M/EP coating increase of 51mV and its desired polyaniline large In order to reduce. XPS, XRD, FTIR analysis showed: PANI/Dy2O3-I in Dy2O3 PANI inter-chain interactions, and with Dy2O3 content increases, the molecular regularity lower blue shift of the infrared spectrum increases. Compared with PANI the optimum conditions PANI/Dy2O3-I better thermal stability.
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