| 초록 |
In this work, biobased epoxy materials were prepared from functionalized vegetable oils, i.e., epoxidized soybean oil (ESO) and epoxidized castor oil (ECO), cured with N-benzylquinoxalinium hexafluoroantimonate (BQH) as a thermally latent initiator. The cure behaviors, thermal, and rheological properties of ESO/BQH and ECO/BQH systems were investigated. As a result, the peak maximum temperature and cure activation energy of ESO/BQH system were higher than those of ECO/BQH system. And the ESO/BQH system showed a higher thermal stability and lower glass transition temperature than those of ECO/BQH system. It is also found that the cross-linking activation energy of ESO/BQH system was higher than that of ECO/BQH system, which was due to the steric hindrance induced by intermolecular interactions between the ESO and BQH in the polymerization. |
