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Title:: Preparation and properties of conductive anticorrosive coatings using Eucommia Ulmoides gum/carbon nanotube modified epoxy

Author(s):: ZHANG Yan; KANG Hai-lan; FANG Qing-hong; College of Materials Science and Engineering/Key Laboratory of Rubber Elastomers of Liaoning Province, Shenyang University of Chemical Technology, Shenyang 110142, China

Keywords:: Eucommia Ulmoides gum; epoxy resin; conductive anticorrosive coating; carbon na-notube; corrosion resistance; conductivity

摘要:: 以杜仲胶（EUG）和环氧树脂（E-51）为涂层基质、碳纳米管为导电填料制备了导电防腐涂料，考察了EUG用量对复合涂层导电性和耐腐蚀性的影响。采用差示扫描量热仪和动态热机械分析仪研究了复合涂层的热性能，用四探针测试仪研究了导电性能，分别通过电化学阻抗谱及盐雾测试和附着力测试研究了耐腐蚀性和附着力。结果表明，当EUG用量为8份（质量）时，所制备导电防腐涂料涂膜的电导率达到0.083 s/cm，电化学阻抗约为9×107 Ω·cm2； EUG与E-51的相容性良好，EUG的加入改善了复合涂层的导电性和耐腐蚀性。

Abstract:: Conductive anticorrosive coatings were prepared by using Eucommia Ulmoides gum（EUG）and epoxy resin （E-51） as matrix and carbon nanotubes （CNT） as conductive filler. The effects of EUG amount on corrosion resistance and electrical conductivity of the coating were investigated. The thermal properties of the composite coating were analyzed by differential scanning calorimetry and dynamic thermomechanical, and the conductivity of the composite coating was tested by a four-probe tester, electrochemical impedance spectroscopy, salt spray test and adhesion were used to characterize the corrosion resistance and mechanical properties of the composite coating. The results showed that when the EUG amount was 8 phr, the conductivity of the coating film of the conductive anticorrosive coating prepared by this method reached 0.083 s/cm, and the electrochemical impedance was about 9×107 Ω·cm2. EUG had good compatibility with E-51, and the addition of EUG could improve the corrosion resistance and conductivity of the coating.