Scholarlink

<p>Graphene oxide (GO)-modified waterborne epoxy resin (WEP) coatings have gained significant attention as a promising candidate for marine anti-corrosion applications, owing to their exceptional corrosion resistance, tunable rheological behavior, and environmental benefits. However, during preparation, GO/WEP coatings often develop defects such as micropores and cracks due to improper GO loading and curing-induced stress concentration, which considerably compromise their protective performance and limit their large-scale implementation. In this study, a "rheology-curing synergistic regulation" strategy is proposed, focusing on the optimization of GO content and curing procedures. Using steady-state rheological measurements and electrochemical corrosion assessments, the optimal GO formulation was identified. Subsequently, differential scanning calorimetry (DSC) and dynamic rheological analysis were employed to design a stepwise curing protocol that effectively mitigates interfacial stress concentration, enabling the controlled fabrication of high-performance anti-corrosion coatings. The optimized coating demonstrated an order-of-magnitude increase in impedance modulus and a corrosion current density (<i>I</i><sub>corr</sub>) as low as 9.68 × 10<sup>−10</sup> A/cm<sup>2</sup>. This work provides valuable insights into the coordinated regulation of processing and performance.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Synergistic optimization of waterborne epoxy coatings via rheology and curing tuning with graphene oxide modification

  • 期刊论文

  • 发表日期：

    2026年5月26日

查看全文
  • Meng Wang,
  • Yue Wu,
  • Guo-jun Ji

摘要

Graphene oxide (GO)-modified waterborne epoxy resin (WEP) coatings have gained significant attention as a promising candidate for marine anti-corrosion applications, owing to their exceptional corrosion resistance, tunable rheological behavior, and environmental benefits. However, during preparation, GO/WEP coatings often develop defects such as micropores and cracks due to improper GO loading and curing-induced stress concentration, which considerably compromise their protective performance and limit their large-scale implementation. In this study, a "rheology-curing synergistic regulation" strategy is proposed, focusing on the optimization of GO content and curing procedures. Using steady-state rheological measurements and electrochemical corrosion assessments, the optimal GO formulation was identified. Subsequently, differential scanning calorimetry (DSC) and dynamic rheological analysis were employed to design a stepwise curing protocol that effectively mitigates interfacial stress concentration, enabling the controlled fabrication of high-performance anti-corrosion coatings. The optimized coating demonstrated an order-of-magnitude increase in impedance modulus and a corrosion current density (Icorr) as low as 9.68 × 10−10 A/cm2. This work provides valuable insights into the coordinated regulation of processing and performance.