혼합물을 20˚C에서 60분간 초음파 분산시키고, 경화제를 첨가하여 상온에서 30분간 막대자석으로 교반하였다.
The mixture was ultrasonically dispersed at 20°C for 60 minutes, a curing agent was added, and the mixture was stirred with a bar magnet for 30 minutes at room temperature.