Halloysites and mesoporous silica as inhibitor nanocontainers for feedback 
active powder coatings

Shchukina, Elena; Shchukin, Dmitry; Grigoriev, Dmitry

doi:10.1016/j.porgcoat.2015.12.013

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Halloysites and mesoporous silica as inhibitor nanocontainers for feedback active powder coatings

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Grigoriev, Dmitry
Grenzflächen, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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引用

Shchukina, E., Shchukin, D., & Grigoriev, D. (2016). Halloysites and mesoporous silica as inhibitor nanocontainers for feedback active powder coatings. Progress in Organic Coatings. doi:10.1016/j.porgcoat.2015.12.013.

引用: https://hdl.handle.net/11858/00-001M-0000-0029-6752-9

要旨

We carried out comparative study of the effect of inhibitor-loaded nanocontainers on corrosion protection performance of polyepoxy powder coatings employing neutral salt-spray test (5% NaCl, 35 °C, different time). We demonstrated that halloysites and mesoporous silica particles loaded with corrosion inhibitor 8-hydroxyquinoline can be homogeneously distributed in powder coating effectively reducing corrosion of the metal substrate over 1000 h of salt-spray test. Addition of only 2 wt.% of inhibitor encapsulated in both nanocontainers to the powder coating is sufficient to decrease the delamination effect by 2–3 times and suppress the formation of the pitting corrosion.