에폭시와 아크릴 전착도료의 혼용성에 따른 물성 변화 연구

Abstract

The biggest weakness of epoxy electro-deposition coatings is the yellowing phenomena caused by benzene structure of bisphenol A. So the weather resistance is very weak. To compensate for this yellowing discoloration, acryl electro-deposition coatings have been developed. Compared with the epoxy electro-deposition coatings, however, acryl electro-deposition ones are relatively weak in corrosion resistance and mechanical properties. That is why continuous improvement is required. The purpose of this study is intended to find the optimal formulation of epoxy and acryl electro-deposition coatings to compensate for their drawbacks. To investigate the effect on corrosion resistance and weather resistance, mechanical properties which the mix of epoxy and acryl electro-deposition coatings has, i conducted experiments of salt spray, QUV and mechanical (cupping, bending, impact) properties test. When the resin ratio of acryl is 75%, the corrosion and the weather resistances are appropriately improved. The higher the ratio of acryl resin is, the more yellowing phenomena is decreased.