Laser 3D Printing and Properties of HAP-TCP Composite Bioceramic Materials
WANG Zhiyong1, CAI Zhixiang1, LIU Guocheng2, SUN Zhilong1, ZHANG Tie3
1 Wuhan Intelligent Laser Technology Co. LTD,Wuhan 430000, China 2 Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China 3 Hubei Lianjie Biological Materials Co. LTD,Wuhan 430000, China
Abstract: Hydroxyapatite (HAP) and tricalcium phosphate (TCP) are scaffold materials that are widely used in bone repair. The composite materials of HAP and TCP can obtain high molding accuracy, good osteogenesis and fast degradation. A SLA-system was used in this study to print green part, this system can meet the requirements of irregular artificial bone formation. The HAP-TCP composite ceramic powders were mixed with an acrylic resin and other additives, then ball-milling was performed to obtain a ceramic slurry. Through the study of printing process, the optimal curing depth is determined to be 3—4 times of the layer thickness and the optimal scanning speed is 2 000 mm/s. The sintering temperature range of the green part was obtained through the analysis of the TG-DSC curve. By testing several sintering temperatures, we confirmed that the optimal sintering temperature was 1 000 ℃. Finally, under the best process parameters, we printed the ceramic scaffold. Through the SEM observation, we could see the tightly combined crystals. Finally, animal experiments showed that after the scaffold was implanted in the skull of the mouse. And we did not see any symptoms of death and adverse reactions of the mouse, and we also saw the osteogenesis phenomenon.
王志勇, 蔡志祥, 刘国承, 孙智龙, 张铁. HAP-TCP复合生物陶瓷浆料的激光3D打印及性能研究[J]. 材料导报, 2021, 35(Z1): 104-107.
WANG Zhiyong, CAI Zhixiang, LIU Guocheng, SUN Zhilong, ZHANG Tie. Laser 3D Printing and Properties of HAP-TCP Composite Bioceramic Materials. Materials Reports, 2021, 35(Z1): 104-107.