| 학회 | 한국공업화학회 |
| 학술대회 | 2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 | 19권 1호 |
| 발표분야 | 고분자_포스터 |
| 제목 | Dispersion Stability of Waterborne Polyurethane Dispersion |
| 초록 | Recently, in automobile coating industry, eco-friendly waterborne coating technology became an important issue to reduce emission of hazardous volatile organic compounds (VOCs) during coating process. Among many waterborne coating materials, waterborne polyurethane dispersions (WPUDs) have widely been investigated for automobile rubber protection coating materials because of their outstanding mechanical and chemical properties. Despite of many advantages over solvent-borne system, WPUDs have one major problem, which is how to secure long-term storage stability under various environments because dispersion instability such as aggregation, creaming, and sedimentation often results in poor quality coating. In this study, we synthesized waterborne poly(carbonate urethane)s with high molecular weight and investigated their dispersion stability. Real-time monitoring up to 90 days was achieved by using Turbican technique. It is revealed that many factors such as solid content, ionic content, temperature, molecular weight of polymer, pH, and viscosity greatly affects dispersion stability of WPUDs. |
| 저자 | 김태희, 김혁진, 강성희, 김진철, 서봉국 |
| 소속 | 한국화학(연) |
| 키워드 | Dispersion Stability; Waterborne Polyurethane; Turbiscan |
