用杜仲胶/碳纳米管改性环氧树脂制备导电防腐涂料及其性能

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...

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

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.