Study on corrosion resistance of copper foil by surface silylation treatment

We studied the electrolytic copper foil's corrosion protection effect after γ-APT surface silylation treatment by the electrodynamic polarization and electrochemical impedance spectroscopy (EIS) analysis. The experiment was carried out in 3.5 % NaCl solution with various dosages of silane coupling agent. We systematically investigated the corrosion resistance of self-assembled organic film on copper foil under different conditions by changing the ratio of silane to ethanol and water, pH value, curing temperature and curing time. The results reveal that the self-assembled γ-APT film has good corrosion resistance. The optimum technique is 2.0 % γ-APT silane liquid content under pH value of 5, 100 ℃ and one hour's curing time.