| 초록 |
To improve the insulaton effiency of the rigid polyurethane foam(PUF), the PUF/clay nanocomposites, which were well-dispersed clay structure in the PUF by using coupling agent, was prepared. In the studies of the PUF/clay nanocomposites, the effects of the coupling agent on the dispersibility of the clay were investigated. To avoid the clay aggregation, the coupling agent was used for the formation of the chemical bond between the clay and MDI. In the studies of the IR spectra, the specific interactons among the MDI-coupling agent-clay were observed. Also, from the studies of the TEM and XRD analysis of the PUF/clay nanocomposites, the exfoliation of the clay was observed. Acknowledgement : This research was supported by a grant (code BC1-102) from Carbon Dioxide Reduction & Sequestration Research Center, one of the 21st Century Frontier Programs funded by the Ministry of Science and Technology of Korea government. |
