Influence of colloidal nano-silica on alkyd autoxidation

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

Nanoparticles are often added to coatings in order to improve their mechanical properties. However, nanoparticles can also influence the cross-linking reaction of polymers and overall curing kinetics, and from this follows that properties of interest are further impacted. In research studies on alkyd-based coatings, only the physical drying stage during the first 24 h has been studied in this respect until now. In this study, it was shown with the use of Raman spectroscopy that colloidal nano-silica can change the rate of alkyd autoxidation and how this effect is reflected on the tensile properties of the coating. One of the consequences of the influence of nano-silica on curing kinetics is that, contrary to implicit assumptions of common testing methods, the real effect of nanoparticles on mechanical properties can emerge much later in the coating lifetime.

OriginalsprogEngelsk
TidsskriftJournal of Materials Science
Vol/bind52
Udgave nummer12
Sider (fra-til)7158-7165
Antal sider8
ISSN0022-2461
DOI
StatusUdgivet - 2017

ID: 177417197