|About this Abstract
||MS&T21: Materials Science & Technology
||Additive Manufacturing Modeling and Simulation: Microstructure, Mechanics, and Process
||Preparation of Ceramic Green Body with Uniform Density through Living Properties of Cycloaliphatic Epoxy Resins in DLP(Digital Light Processing) 3D Printing of Ceramics
||Hye-Yeong Park, SeungHwa Jeong, Haeun Kim, DongHyun Kim, Janghyeok Pyeon, SeungCheol Yang, Yeon-Gil Jung
|On-Site Speaker (Planned)
In a photo-polymerization based ceramic 3D printing, the opaque slurry reduces the penetration depth of light, resulting in a difference in crosslinking density within the layer, which causes problems such as cracking and distortion when fabricated into a firing body. In this study, the cycloaliphatic epoxide has been proposed as a monomer of photo-curable slurry to fabricate the green body with a uniform crosslinking density due to the living characteristics of photo-cationic polymerization. If there is no nucleophilic substance in the cationic polymerization, the polymerization may continue to be proceeded even after light irradiation. As a result, the ceramic slurry produced using the cycloaliphatic epoxide and silica underwent an additional polymerization by heating at 150°C after the photo-polymerization, showing a uniform the crosslinking density and improving the green strength. In addition, it was possible to produce a sound fired body without any change in a shape after firing at 1000°C.
||Planned: At-meeting proceedings