Scholarlink

<p>This study demonstrates a practical route to integrate commercially available graphene into corrosion-protective coatings. Emphasis is placed on processing conditions that govern dispersion quality, and a ready-to-use, letdown graphene intermediate is formulated for solvent- and waterborne systems to minimize in-plant dispersion. Processing windows for graphene loading, dispersant level, and dispersion energy are established. Deagglomeration and dispersion stability are quantified by laser diffraction particle size analysis and supported by SEM and Raman spectroscopy. Corrosion performance is evaluated by salt spray testing and electrochemical impedance spectroscopy. Clear processing–structure–performance relationships are identified. Well-dispersed graphene at an optimized dispersant level enhances barrier performance and corrosion resistance, whereas insufficient deagglomeration or nonoptimal dispersant dosage can negate benefits and even diminish protection. Excessive dispersant contents reduce film integrity, effectively offsetting graphene’s advantage. High-surface-area grades can be challenging due to elevated dispersant demand. Overall, achieving a narrow particle size distribution and maintaining dispersion stability are critical for effective use of graphene in coatings.</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

Graphene as a high-performance additive: the importance of fine dispersion for corrosion protection in coatings

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年6月26日

查看全文
  • Jan Willem van der Koelen,
  • Frank Kother,
  • Michael Dornbusch,
  • Jochen Stefan Gutmann,
  • Eui-young Shin

摘要

This study demonstrates a practical route to integrate commercially available graphene into corrosion-protective coatings. Emphasis is placed on processing conditions that govern dispersion quality, and a ready-to-use, letdown graphene intermediate is formulated for solvent- and waterborne systems to minimize in-plant dispersion. Processing windows for graphene loading, dispersant level, and dispersion energy are established. Deagglomeration and dispersion stability are quantified by laser diffraction particle size analysis and supported by SEM and Raman spectroscopy. Corrosion performance is evaluated by salt spray testing and electrochemical impedance spectroscopy. Clear processing–structure–performance relationships are identified. Well-dispersed graphene at an optimized dispersant level enhances barrier performance and corrosion resistance, whereas insufficient deagglomeration or nonoptimal dispersant dosage can negate benefits and even diminish protection. Excessive dispersant contents reduce film integrity, effectively offsetting graphene’s advantage. High-surface-area grades can be challenging due to elevated dispersant demand. Overall, achieving a narrow particle size distribution and maintaining dispersion stability are critical for effective use of graphene in coatings.