Formation and properties of spontaneously polymerized fluorocoatings on aluminum

Spontaneous polymerization (S-Poly) is a novel process to form protective p olymer coatings on aluminum and other metals. Here we discuss polymerizatio n and coating properties when two fluorinated monomers are introduced into the S-Poly system. The resulting coatings were characterized using attenuat ed total reflectance fourier transform infrared (ATR-FTIR), differential sc anning calorimetry (DSC), optical microscope and other measurements. Fluori nated coatings showed excellent dielectric properties and strong hydrophobi city. Their dry adhesion strength was a little lower than the coatings in p revious systems, but changed very little after immersion in hot water for s everal days. Some of the fluorinated coatings exhibited significantly impro ved corrosion resistance in most corrosion tests.