| 학회 | 한국재료학회 |
| 학술대회 | 2018년 봄 (05/16 ~ 05/18, 삼척 쏠비치 호텔&리조트) |
| 권호 | 24권 1호 |
| 발표분야 | B. 나노화학/바이오 분과 |
| 제목 | Fabrication of Multi-material based functionally graded structure using 3D printing technique |
| 초록 | Recently, 3D printing technique with improved capability of precisely realizing three-dimensional designed shapes using a computer has been utilized in various industrial fields. SLA(Stereo-lithography) and DLP(Digital Light Processing) technologies use a platform(stage) to create a thin layer of photo-curable materials such as photo-curable resin, ceramic/resin composites, by ultra violet light, selectively cure it according to a pre-programmed design, a technique of forming a three-dimensional structures in such a manner as to continuously laminate on an z-axis. Typical SLA and DLP technologies are used for forming a single-composition structure because 3D printing is performed in a container containing a single material with uniform composition. Recently developed multi-material based 3D printing technique can produce a composite material having a stacked structure of a plurality of materials, but there is a clear interface between different materials, which may result in a drastic decrease in physical properties. Accordingly, this study relates to the development of a new concept of 3D printing technique capable of printing a shaped article having a unique graded functional structure in which the composition capable of overcoming the limit of the discontinuous interface yet continuously changes. In this study, homogeneously dispersed high-content ceramic slurry(ceramic loading 50 vol.%) is prepared by using Hydroxyapatite(HA) and β-tricalcium phosphate(β-TCP), which are biocompatible ceramic powders, and photo-curable monomers such as 1,6-Hexanediol diacrylate(HDDA), Acryloyl morpholine(ACMO) and dispersant. The prepared ceramic/polymer structure is densified by removing monomer binders and heat treatment is performed at a high temperature of 1150℃ to prepare and evaluate the final sintered body. |
| 저자 | 이윤희, 고영학 |
| 소속 | 고려대 |
| 키워드 | <P>gradient; multi-material; bioceramic </P> |
