Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4999340 | Progress in Organic Coatings | 2017 | 6 Pages |
Abstract
The comparative study was carried out to show the effect of the halloysite nanotubes loaded with three inhibitors with different properties (Korantin SMK, Halox 520 and (NH4)2TiF6) as an additive for autonomic corrosion protection of polyepoxy coating on steel substrate. The comparison was carried out employing neutral salt-spray test (5% NaCl, 35 °C, different time). Commercial polyepoxy coating containing 20 wt% of zinc phosphate was used as a benchmark during testing. We demonstrated that inhibitor-loaded halloysites at 5 wt% concentration are able to successfully substitute 20 wt% zinc phosphate in the commercial polyepoxy coating even improving its corrosion protection performance, which depends in a large extend on the release profiles of the inhibitors loaded into halloysite nanotubes. On the contrary, addition of the free inhibitors into the coating showed complete deterioration of the corrosion protection properties for all inhibitors.
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Authors
Elena Shchukina, Dmitry Grigoriev, Tatyana Sviridova, Dmitry Shchukin,