The adsorption of an UV-curable resin on hot-dip galvanized steel: a ToF-SIMS study

作者：Marino P; Lowe C; Abel M L; Watts J F^*

来源：Surface and Interface Analysis, 2011, 43(1-2): 420-422.

DOI：10.1002/sia.3476

• adsorption
• hot-dip galvanized steel (HDGS)
• coil-coating
• ToF-SIMS
• ion imaging

The adsorption of an acrylated resin, the main component in a commercial UV-cured coating, on hot-dip galvanized steel (HDGS) has been studied. The aim of the work was to understand how the resin is adsorbed onto the different regions (aluminium-rich and zinc-rich) that are representative of the HDGS surface, in order to elucidate the mechanism of the HDGS/coating adhesion.
Time-of-flight secondary ion mass spectrometry (ToF-SIMS) was employed to study the adsorption of the resin. Mass spectra and mass-selected images were recorded in the high-current bunched mode, using Bi-3(+) as the primary ion. Scatter ratio plots and relative mass selected images, were used to select the areas of interest for spectral reconstruction.
The adsorptions curves were best described by the Langmuir model, indicating that all the adsorption sites are equivalent. The adsorption of the resin leads to the formation of a monolayer on the surface of HDGS.
ToF-SIMS ion selected images showed the presence of two well defined regions, aluminium-rich regions and zinc-rich regions. This distinction is not modified by the resin adsorption.
The adsorption of the resin was studied independently on aluminium-rich regions and zinc-rich regions. The adsorption curves indicate that the amount of adsorbed resin is almost identical in these two regions, with the formation of a resin monolayer in both cases. These results suggest that the resin/HDGS interaction is comparable in the aluminium-rich and zinc-rich regions.

• 出版日期2011-2