Water-based rust converter and its polymer composites for surface anticorrosion

Jianfeng Li, Shengsong Ge, Junxiang Wang, Huayun Du, Kenan Song, Zhiying Fei, Qian Shao, Zhanhu Guo

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

A novel water-based rust converter 2-hydroxypropyl 3, 4, 5-trihydroxybenzoate (named as RC-GAE) was prepared by using an esterification reaction between 1, 2-propylene glycol (PG) and gallic acid (GA). The effects of PG and GA mass ratio in the RC-GAEs on the anticorrosion were investigated by the Tafel polarization with the rusty plate samples coated with RC-GAEs in a 3.5 wt% NaCl solution. The rust was converted to a compact black protective rust-conversion film with this rust converter. The metallographic microstructure, morphology, and crystalline phase of the rust-conversion films were conducted systematically by optical microscopy, X-ray diffraction, and scanning electron microscopy with energy-dispersive spectrometry. The corroded plate with uneven and rough brown surface became smoother and darker after treated with converter. X-ray photoelectron spectroscopy indicated that the RC-GAE reacted with Fe2+/Fe3+ and formed a compact Fe2+/Fe3+ chelate film that played the role of anticorrosion. Additionally, new water-based anticorrosion coating was prepared by applying a mixture of RC-GAE and other additives to form polymer composites on the rusty steel plates. Both adhesion test and neutral salt spray test indicated that the anticorrosion coating presented a good corrosion resistance and a remarkably strong film adhesion of the new water-based anticorrosion polymer composites coating.

Original languageEnglish (US)
Pages (from-to)334-342
Number of pages9
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume537
DOIs
StatePublished - Jan 20 2018
Externally publishedYes

Fingerprint

rust fungi
converters
Polymers
Propylene Glycol
Gallic Acid
composite materials
Water
Composite materials
polymers
Glycols
water
Propylene
Metallographic microstructure
propylene
Adhesion
coatings
glycols
Coatings
Acids
salt spray tests

Keywords

  • Adhesion
  • Anticorrosion
  • Coatings
  • Gallic acid
  • Water-based rust converter

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Water-based rust converter and its polymer composites for surface anticorrosion. / Li, Jianfeng; Ge, Shengsong; Wang, Junxiang; Du, Huayun; Song, Kenan; Fei, Zhiying; Shao, Qian; Guo, Zhanhu.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 537, 20.01.2018, p. 334-342.

Research output: Contribution to journalArticle

Li, Jianfeng ; Ge, Shengsong ; Wang, Junxiang ; Du, Huayun ; Song, Kenan ; Fei, Zhiying ; Shao, Qian ; Guo, Zhanhu. / Water-based rust converter and its polymer composites for surface anticorrosion. In: Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2018 ; Vol. 537. pp. 334-342.
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