The Research On The Flaky Aluminum Pigment Coated By Polystyrene Film Using Polymerization

This paper mainly focused on the flaky aluminum pigment coated by polystyrene film using polymerization. The amount of monomer and initiator, the reaction time, the reaction temperature, the material-feed way and other factors were considered to affect the coating quality. The corrosion inhibition efficiency, the gloss, the brightness, the percentage of coating(PC%) and the coating efficiency(CE%) of composite particles, and the conversion of monomer(C%) and degree of polymerization of polymerization reactions were carried out to evaluate the effects.. The composite particles were analyzed and characterized by Fourier transform infrared (FTIR), TG-DTA, EDX, SEM and TEM. The results show that the feasible reaction condition is as follows: the weight ratio of monomer and initiator is 50%andl0% respectively, time is 3h, temperature is 70℃and the material-feed way is dropping initiator AIBN to the reactor. The corrosion inhibition efficiency of the composite particles is 60.80%, scraper and jetting gloss are 77.63 and 71.90, scraper and jetting brightness are 9.13 and 3.18, while PC% is 3.28% and CE% is 8.64% respectively. Besides, the C% of polystyrene is 67.06%, molecular weight is 16500 and degree of polymerization is 158.The crylic acid(AA), cis-butenedioic acid(MA) and silicane coupling agents(MPS) considered as functionality materials were also studied in the paper. According to the results, all of the three can improve the corrosion inhibition efficiency of the polystyrene coated flaky aluminum pigment from 60.80% to 78.35%,96.05%,85.72% seperately.Finally, the formation mechanism of the coating was studied preliminarily.