The 3D printing process provides a higher degree of freedom when designing ceramic parts than the conventional press forming process. However, the generation and growth of the microcracks induced during heat treatment is thought to be due to the occurrence of local tensile stress caused by the thermal decomposition of the binder inside the green body. In this study, an alumina columnar specimen, which is a representative ceramic material, is fabricated using the digital light process (DLP) 3D printing method. DTG analysis is performed to investigate the cause of the occurrence of microcracks by analyzing the debinding process in which microcracks are mainly generated. HDDA of epoxy acrylates, which is the main binder, rapidly debinded in the range of 200 to 500oC, and microcracks are observed because of real-time microscopic image observation. For mitigating the rapid debinding process of HDDA, other types of acrylates PETA, PUA, and MMA are added, and the effect of these additives on the debinding rate is investigated. By analyzing the DTG in the 25 to 300oC region, it is confirmed that the PETA monomer and the PUA monomer can suppress the rapid decomposition rate of HDDA in this temperature range.

Abstract
1. 서 론
2. 실험 방법
3. 결과 및 토론
4. 결 론
References

• 이현빈(한국세라믹기술원 이천분원 엔지니어링세라믹센터) | Hyun-Been Lee (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology (Icheon))
• 이혜지(한국세라믹기술원 이천분원 엔지니어링세라믹센터) | Hye-Ji Lee (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology (Icheon))
• 김경호(한국세라믹기술원 이천분원 엔지니어링세라믹센터) | Kyung-Ho Kim (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology (Icheon))
• 류성수(한국세라믹기술원 이천분원 엔지니어링세라믹센터) | Sung-Soo Ryu (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology (Icheon))
• 한윤수(한국세라믹기술원 이천분원 엔지니어링세라믹센터) | Yoonsoo Han (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology (Icheon)) Corresponding Author