Work

A Phosphate-Modified Aqueous Acrylic–Alkyd Resin for Protective Technology to Prevent Corrosion of Iron Substrates

Year: 2025

Type: article

Abstract: Iron corrosion is very common in our daily life, and its effective protection can extend its service life. As a small molecule monomer, 2-hydroxyethyl methacrylate phosphate (HEMAP) has a phosphate group that can effectively chelate with iron ions to form a passivation layer (iron phosphate), thus slowing down the corrosion rate of iron. This study synthesized HEMAP-modified acrylic-alkyd resin copolymers with variable concentrations using free radical polymerization. The addition of HEMAP not only increases the cross-linking density of the resin, but it also further strengthens the adhesion between the resins and the iron substrate, which prevents corrosive substances from penetrating the resin. According to electrochemical studies, adding 2% mass fraction of HEMAP to the resin could greatly increase its resistance to corrosion. This study reveals HEMAP's capacity to enhance the protection of coatings on iron substrates and lengthen the metal's service life.

Source: Polymers

DOI: 10.3390/polym17070847

Authors: Chenglong Jiao, Wei He, Shixiong Sun, Wenhao Du, Benbo Zhao

Institutions: North University of China, State Key Laboratory of Polymer Materials Engineering

Language: English

Topic: Corrosion Behavior and Inhibition

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,258

Funders: Sichuan University, Shanxi Province Science Foundation for Youths