The acid resistance and corrosion stability of polyester coatings on phosphatized steel
Abstract
Protective polyester coatings on phosphatized steel were obtained with different combinations of diols (2-butyl-2-ethyl-1,3-propanediol or 2,2-dimethyl-1,3-propanediol), organic acids (1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, hexahydrophthalic acid anhydride or adipic acid) and hexamethoxymethylmelamine as a crosslinking agent. The acid resistance and corrosion stability of these coatings were investigated during exposure to different corrosive agents (30% H2SO4, 3% NaCl) using the acid resistance test, electrochemical impedance spectroscopy (EIS) and measurement of the film thickness, gloss and hardness. It was shown that coatings based on polyesters with more branched structures of the diol (2-butyl-2-ethyl-1,3-propanediol) and of the organic acid (hexahydrophthalic acid anhydride), which enable better crosslinking, exhibit better acid resistance and corrosion stability. Coatings with the optimal polyester/melamine ratio, which is close to the theoretical r...atio for complete crosslinking, also show better protective properties.
Keywords:
polyester coatings / corrosion / electrochemical impedance spectroscopySource:
Journal of the Serbian Chemical Society, 1998, 63, 1, 53-62Publisher:
- Serbian Chemical Society, Belgrade
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Mišković-Stanković, Vesna AU - Đorđević, Nataša PY - 1998 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/165 AB - Protective polyester coatings on phosphatized steel were obtained with different combinations of diols (2-butyl-2-ethyl-1,3-propanediol or 2,2-dimethyl-1,3-propanediol), organic acids (1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, hexahydrophthalic acid anhydride or adipic acid) and hexamethoxymethylmelamine as a crosslinking agent. The acid resistance and corrosion stability of these coatings were investigated during exposure to different corrosive agents (30% H2SO4, 3% NaCl) using the acid resistance test, electrochemical impedance spectroscopy (EIS) and measurement of the film thickness, gloss and hardness. It was shown that coatings based on polyesters with more branched structures of the diol (2-butyl-2-ethyl-1,3-propanediol) and of the organic acid (hexahydrophthalic acid anhydride), which enable better crosslinking, exhibit better acid resistance and corrosion stability. Coatings with the optimal polyester/melamine ratio, which is close to the theoretical ratio for complete crosslinking, also show better protective properties. PB - Serbian Chemical Society, Belgrade T2 - Journal of the Serbian Chemical Society T1 - The acid resistance and corrosion stability of polyester coatings on phosphatized steel EP - 62 IS - 1 SP - 53 VL - 63 UR - https://hdl.handle.net/21.15107/rcub_technorep_165 ER -
@article{ author = "Mišković-Stanković, Vesna and Đorđević, Nataša", year = "1998", abstract = "Protective polyester coatings on phosphatized steel were obtained with different combinations of diols (2-butyl-2-ethyl-1,3-propanediol or 2,2-dimethyl-1,3-propanediol), organic acids (1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, hexahydrophthalic acid anhydride or adipic acid) and hexamethoxymethylmelamine as a crosslinking agent. The acid resistance and corrosion stability of these coatings were investigated during exposure to different corrosive agents (30% H2SO4, 3% NaCl) using the acid resistance test, electrochemical impedance spectroscopy (EIS) and measurement of the film thickness, gloss and hardness. It was shown that coatings based on polyesters with more branched structures of the diol (2-butyl-2-ethyl-1,3-propanediol) and of the organic acid (hexahydrophthalic acid anhydride), which enable better crosslinking, exhibit better acid resistance and corrosion stability. Coatings with the optimal polyester/melamine ratio, which is close to the theoretical ratio for complete crosslinking, also show better protective properties.", publisher = "Serbian Chemical Society, Belgrade", journal = "Journal of the Serbian Chemical Society", title = "The acid resistance and corrosion stability of polyester coatings on phosphatized steel", pages = "62-53", number = "1", volume = "63", url = "https://hdl.handle.net/21.15107/rcub_technorep_165" }
Mišković-Stanković, V.,& Đorđević, N.. (1998). The acid resistance and corrosion stability of polyester coatings on phosphatized steel. in Journal of the Serbian Chemical Society Serbian Chemical Society, Belgrade., 63(1), 53-62. https://hdl.handle.net/21.15107/rcub_technorep_165
Mišković-Stanković V, Đorđević N. The acid resistance and corrosion stability of polyester coatings on phosphatized steel. in Journal of the Serbian Chemical Society. 1998;63(1):53-62. https://hdl.handle.net/21.15107/rcub_technorep_165 .
Mišković-Stanković, Vesna, Đorđević, Nataša, "The acid resistance and corrosion stability of polyester coatings on phosphatized steel" in Journal of the Serbian Chemical Society, 63, no. 1 (1998):53-62, https://hdl.handle.net/21.15107/rcub_technorep_165 .