Double-Layer Corrosion Protection of Aluminium Pigments Applied in Water-Based Silver Ink

摘要

In consideration of the active chemical property, rapid agglomeration in water-based silver ink application, poor compatibility with organic resin and poor adhesion to the substrate of aluminium pigment, double-layer corrosion protection of aluminium pigments were realized by combining sol/gel method in this paper. The optimum ratio was obtained via characterization of gloss, corrosion inhibition efficiency, scanning electron microscopy (SEM) and infrared spectroscopy (FTIR): 0.35 g of MMA, 0.005 g of BPO, 85 °C of polymerization temperature and 5 h of reaction time. Then water-based silver ink was formulated at the optimal mass ratio: 0.2 g of the modified aluminium pigments, 2.1 g of acrylic resin and 0.2 g of butyl acetate. The results showed that the dispersibility and compatibility with resin of aluminium pigments are significantly reinforced and can be widely applied in the actual production.