In this study, a spray dryer is used to make granules of Y2O3 and YF3, and then Y5O4F7 is synthesized following heat treatment of them under Ar gas atmosphere at 600 oC. Single and binary monomer mixtures are compared and analyzed to optimize photocurable monomer system for DLP 3D printing. The mixture of HEA and TMPTA at 8:2 ratio exhibits the highest photocuring properties and low viscosity with shear thinning behavior. The optimized photocurable monomer and synthesized Y5O4F7 are therefore mixed and applied to printing process at variable solid contents (60, 70, 80, & 85 wt.%) and light exposure times. Under optimal light exposure conditions (initial exposure time: 1.2 s, basic exposure time: 5 s), YOF composites at 60, 70 & 80 wt.% solid contents are successfully printed. As a result of measuring the size of the printed samples compared to the dimensions of the designed bar type specimen, the deviation is found to increase as the YOF solid content increases. This shows that it is necessary to maximize the photocuring activity of the monomer system and to optimize the exposure time when printing using a high-solids ceramic slurry.

Abstract
1.서 론
2. 실험방법
3. 결과 및 고찰
    3.1. 합성 Y5O4F7 분말의 결정상 및 형상
    3.2. 모노머의 유변학적 특성 및 광경화성
    3.3. 광경화성 YOF 슬러리의 특성 변화와 DLP 3D프린팅
4.결 론
References

• 김은성(한국세라믹기술원 이천분원) | Eunsung Kim (Korea Institute of Ceramic Engineering & Technology)
• 한규성(한국세라믹기술원 이천분원) | Kyusung Han (Korea Institute of Ceramic Engineering & Technology)
• 최정훈(한국세라믹기술원 이천분원) | Junghoon Choi (Korea Institute of Ceramic Engineering & Technology)
• 김진호(한국세라믹기술원 이천분원) | Jinho Kim (Korea Institute of Ceramic Engineering & Technology)
• 김응수(한국세라믹기술원 이천분원) | Ungsoo Kim (Korea Institute of Ceramic Engineering & Technology) Corresponding author