| 초록 |
Self-stratifying coatings which form a complex multi-layer after one-step deposition offer economic benefits by reducing process time and energy consumption. Moreover, it is more eco-friendly than typical multi-layer coating methods through reducing VOC emissions contributing to the fine dust problem. This study developed a self-stratified coating system generated by the difference in interfacial energy. We have selected a mixture of acrylic copolymer and epoxy since acrylic copolymer can provide better flexibility and sunlight-resistance, while epoxy can provide excellent adhesion to the polar substrate. We synthesized various acrylate copolymers to regulate the self-stratifying behavior based on the surface tension differences. In conclusion, we characterized the correlation between the interfacial energy difference and the layer separation behavior. The results present potential commercialization in multi-layered coatings for future automobiles and electronic devices. |
