| 초록 |
A series of waterborne polyurethane (WBPU)/clay nanocomposite coating materials were prepared by prepolymer process with different clay contents (0-2 wt%). The glass transition temperature of composite materials was higher than pristine WBPU and also increased with increasing clay contents. Thermal stability, and water resistance of the nanocomposite films also increased, as compared to pristine WBPU and these properties increased with an increase of clay content. The WVP of coated nylon fabrics depend on clay content and temperature. The rate (%) of WVP of coated nylon fabrics decreased with increasing clay content at a fixed temperature. However, at a fixed clay content the WVP increased with increasing temperatures. |
