【摘要】：為了提高達(dá)克羅膜層的防腐蝕性能,采用共混法將氧化石墨烯(GO)分散液與達(dá)克羅處理液(dacromet)共混,在Q235鋼表面制備含GO的達(dá)克羅涂層,通過高溫?zé)徇�原法得到還原氧化石墨烯(rGO)改性的達(dá)克羅膜層。采用熱重分析和差熱分析對氧化石墨烯的熱性能進(jìn)行了表征,使用掃描電鏡(SEM)和交流阻抗技術(shù)(EIS)對改性達(dá)克羅膜層的表面形貌和電化學(xué)行為進(jìn)行表征。結(jié)果表明:GO含氧官能團初期熱裂解溫度為162~260℃,含GO達(dá)克羅膜層經(jīng)200℃高溫固化后,膜層更致密;在質(zhì)量分?jǐn)?shù)為3.5%NaCl溶液中浸泡相同時間,含0.9%GO達(dá)克羅膜層經(jīng)熱處理后的阻抗值最大;260℃處理得到的rGO達(dá)克羅膜層的防護(hù)效果最佳;rGO可提高達(dá)克羅膜層的致密性及防腐蝕性能。
[Abstract]:In order to improve the anticorrosion performance of the Dacromet film, a Dacromet coating containing GO was prepared on the surface of Q235 steel by blending the graphene oxide (GO) dispersions with the Dacrol treatment solution (dacromet). A Dacromet film modified by reduced graphene (rGO) was prepared by high temperature thermal reduction. The thermal properties of graphene oxide were characterized by thermogravimetric analysis and differential thermal analysis. The surface morphology and electrochemical behavior of modified Dacromet film were characterized by scanning electron microscopy (SEM) and AC impedance technique (EIS). The results showed that the initial pyrolysis temperature of the oxygen functional group of GO was 162 鈩，

本文編號：2308093