| 초록 |
The goal of our research has been to realize dual-curing reactions at low temperature which is accompanied with radical reaction and urethane reaction using a single compound called as metal acetylacetonate and to understand the differences in crosslinking results from the radical-urethane reaction relationship, depending on what kind of metals is connected to. The effect on each reaction is mechanistically studied according to the type of metals and how they lead to a result in dual-curing behaviors, especially about physical properties, by exploiting a series of Mn(acac)3, Mn(acac)2, Co(acac)3, Co(acac)2, Fe(acac)3, Zn(acac)2·H2O. The role of Mt(acac)x as a radical initiator is defined by DSC analysis and ESR spectroscopy. To simplify the formulation of reaction, Polyurethanes of hexamethylene diisocyante trimer and 1,8-octanediol in the presence of Mt(acac)x were conducted to get further understanding. It verifies the effect of Mt(acac)x as a catalyst for urethane reaction clearly. |
