期刊
PROGRESS IN ORGANIC COATINGS
卷 69, 期 1, 页码 26-30出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2010.04.023
关键词
Epoxy; Corrosion; Polyaniline; Zinc dust; Marine coating; Anticorrosive additive
资金
- MCYT
- FEDER [MAT2006-04029, MAT2009-09138]
- Generalitat de Catalunya [2009 SGR 925, CIDEM/ACC1O VALTEC08-2-0019]
The aim of this work is to show that the high concentration of metallic zinc dust typically used in marine epoxy primers may be reduced by introducing a small concentration of conducting polymer as auxiliary anticorrosive additive. Specifically, in this work we compare the protection imparted by an epoxy coating with 79 wt.% of anticorrosive pigment with that obtained using the same formulation but reducing such concentration to 60 wt.% and adding 0.3 wt.% of polyaniline emeraldine salt. Initially, the influence of this modification in the structural, thermal and mechanical properties of the coating has been examined. After this, accelerated corrosion assays in an aggressive solution medium have been developed. The protection imparted by the unmodified and modified paint formulations has been determined using the standard method ASTM D 1654-79. (C) 2010 Elsevier B.V. All rights reserved.
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