| 초록 |
The coating is one of the technologies which are used widely in a variety of industries. To improve the physical properties of UV-cured coatings, silica nanoparticles are frequently introduced. However, the low level of compatibility results from the poor interaction between hydrophilic silica nanoparticles and hydrophobic resins. Thus, in order to enhance the compatibility silane coupling agents such as trialkoxysilanes are added. In this study, UV-curable polyester-acrylate coating systems were prepared using two different silica nanoparticles. The modification of the silica nanoparticles was accomplished by methacryloxypropyltrimethoxysilane and confirmed by FTIR and NMR. The UV-curing behavior of the polyester-acrylate coating systems with pristine and modified silica nanoparticles was investigated by FTIR. The conversion of the coating systems decreased with increasing the amount of silane-modified silica nanoparticles. The physical properties and scratch resistance of the coatings were improved by introducing the modified silica nanoparticles. |
