In:
Scientific Reports, Springer Science and Business Media LLC, Vol. 6, No. 1 ( 2016-12-12)
Kurzfassung:
The potential of inorganic nanomaterials as reservoirs for healing agents is presented here. Mesoporous silica (SBA-15) and TiO 2 nanotubes (TNTs) were synthesized. Both epoxy-encapsulated TiO 2 nanotubes and amine-immobilized mesoporous silica were incorporated into epoxy and subsequently coated on a carbon steel substrate. The encapsulated TiO 2 nanotubes was quantitatively estimated using a ‘dead pore ratio’ calculation. The morphology of the composite coating was studied in detail using transmission electron microscopic (TEM) analysis. The self-healing ability of the coating was monitored using electrochemical impedance spectroscopy (EIS); the coating recovered 57% of its anticorrosive property in 5 days. The self-healing of the scratch on the coating was monitored using Scanning Electron Microscopy (SEM). The results confirmed that the epoxy pre-polymer was slowly released into the crack. The released epoxy pre-polymer came into contact with the amine immobilized in mesoporous silica and cross-linked to heal the scratch.
Materialart:
Online-Ressource
ISSN:
2045-2322
Sprache:
Englisch
Verlag:
Springer Science and Business Media LLC
Publikationsdatum:
2016
ZDB Id:
2615211-3
