Accelerated Corrosion tests of epoxy-based coatings containing zinc tannates

Antonella Hadzich, Manuel Gonzales, Santiago Flores

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Accelerated corrosion tests were performed to evaluate the efficiency of epoxy paints (primers) prepared with different anticorrosive pigments to protect structural steel. Nowadays, sustainable technology goals in the paint industry seek to replace the widely used conventional anticorrosive pigments, such as lead or chromate, because of their harmful toxicity to the environment and human health. Previous studies on alkyd coatings have shown that zinc tannates prepared with Tara tannins have the necessary requirements to be considered an efficiently, green and low-cost alternative for prevention of corrosion. Results showed that epoxy primers formulated with zinc tannates exhibited an equivalent anticorrosive behavior to phosphate base coatings and an equivalent or superior performance to those prepared with zinc chromate after salt spray (3500 h) and sulfur dioxide (2500 h) accelerated tests.

Original languageEnglish
Title of host publication21st International Corrosion Congress, ICC INTERCORR WCO 2021
PublisherAssociacao Brasileira De Corrosao (ABRACO) and the International Corrosion Council (ICC)
Pages612-615
Number of pages4
ISBN (Electronic)9781713844303
StatePublished - 2021
Externally publishedYes
Event21st International Corrosion Congress and 8th International Corrosion Meeting, ICC INTERCORR WCO 2021 - Sao Paulo, Brazil
Duration: 20 Jul 202123 Jul 2021

Publication series

Name21st International Corrosion Congress, ICC INTERCORR WCO 2021

Conference

Conference21st International Corrosion Congress and 8th International Corrosion Meeting, ICC INTERCORR WCO 2021
Country/TerritoryBrazil
CitySao Paulo
Period20/07/2123/07/21

Keywords

  • Accelerated corrosion test
  • Coating
  • Epoxy
  • Steel
  • Tannate

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