Preparation Of Polyaniline Conductive Paint And Its Application In The Prevention And Treatment Of Induction

The fast development of power system construction contributes to theincreased number of power construction engineering. It is inevitable to cross orclose to residential buildings in the process of building the power lines, thus,disputes were generated between the residents and state grid which woulddisturb the development of power systems and stability in the local. Because ofthe above reasons, it is very essential to develop a kind of conductive paint toprevent the induced electricity of buildings. For the high chemical stability,special doping mechanism and conductive mechanism, polyaniline haspromising applications in the future of conductive paints.In this paper, emeraldine base polyaniline (EB), Hydrochloric acid dopedpolyaniline (HCl-PANI), p-toluenesulfonic acid doped polyaniline (PTSA-PANI), sodium dodecylbenzene sulfonic acid doped polyaniline (DBSA-PANI)were prepared by using chemical oxidation method, infrared spectrophotometer(IR), X-ray diffraction (XRD), Differential thermal-thermogravimetric analyzer(DTA-TG), Scanning electron microscopy (SEM), Four-probe test platform wereused to study the structure of polyaniline particles, morphology, conductivityand its environmental stability. The results show that DBSA-PANI gives betterperformance in terms of yield, electrical conductivity, structural stability andthe regularity than EB, HCl-PANI and PTSA-PANI. The yield of DBSA-PANIcan reach61%, its conductivity can reach1.003S cm-1. DBSA-PANI is fairlystable at room temperature to350℃.In this thesis, DBSA-PANI/epoxy conductive paint was prepared by usingblending method and DBSA-PANI was used as conductive filler, epoxy resin E-44was used as the film-forming material. The influence of the amount ofDBSA-PANI, the choice of coupling agent and the content of solvent on theproperties of the paint were studied. The conductivity, adhesion force, hardnessand impact properties of paint were investigated under different conditions. Theresults show that dosage of10%DBSA-PANI, solvent content of40%, and thesilane coupling agent was added, makes optimum paint properties, conductivityof the paint is25.1mS cm-1, the adhesion is1level, the hardness is4H, theimpact properties is50Kg·cm. DBSA-PANI/acrylic conductive paint was prepared by using blendingmethod and DBSA-PANI was used as conductive filler, acrylic was used as themembrane material. The influence of the amount of DBSA-PANI, the choice ofcoupling agent and the content of water on the properties of the paint werestudied. The conductivity, adhesion force, Hardness and impact properties ofpaint were investigated under different conditions. The results show that dosageof15%DBSA-PANI, a solvent content of50%, and the titanate coupling agentwas added, makes optimum paint properties, conductivity of the paint is20.1mS cm-1, the adhesion is1level, the Hardness is4H, the impact properties is50Kg·cm.Four conductive paints (number1: polyacrylic acid and microcrystallinecarbon, number2: polyacrylic acid, microcrystalline carbon and metal particle a,number3: polyacrylic acid, microcrystalline carbon and metal particle b,number4: DBSA-PANI/acrylic conductive paint) were used in the fieldexperiments as prevention of induced electricity paints. The results showed thatwith grounding technique, the functional paints can effectively restrain theelectric field intensity and significantly reduced its internal induced voltage.And module D (coated with DBSA-PANI/acrylic conductive paint) showed thebiggest drop. Compared to the only conductive coatings, cover with ordinarywall paint had a little influence on the internal control effect of induction, butthe box on the induced voltage amplitude decrease remarkably reduced. Thesimulation results showed that the effect of using DBSA-PANI/acrylicconductive paints was the best. After using it, power frequency electric field ofintensity decline trend in building has declined and electric field distributionhas been improved.