HA-Al2O3复相陶瓷浆料的调制及其高精度光固化性能

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (10): 3787-3797.

HA-Al₂O₃复相陶瓷浆料的调制及其高精度光固化性能

刘秋玉^1,2, 黎志伟^1,2, 王澳², 王志浩³, 王宇蓝⁴, 陈斐^1,2

1.武汉理工大学襄阳示范区-湖北隆中实验室,襄阳 441000;
2.武汉理工大学材料复合新技术国家重点实验室,武汉 430070;
3.齐鲁工业大学(山东省科学院)材料科学与工程学部,济南 250353;
4.武汉大学口腔医院,武汉 430079

收稿日期:2024-03-19 修订日期:2024-04-27 出版日期:2024-10-15 发布日期:2024-10-16
通信作者: 陈斐,博士,教授。E-mail:chenfei027@whut.edu.cn
作者简介:刘秋玉(1999—),女,硕士研究生。主要从事光固化陶瓷打印的研究。E-mail:qiuyuliu326@whut.edu.cn
基金资助:
国家自然科学基金(51972246,51521001);湖北省国际合作项目(2022EHB037);济南市“新高校20条”资助项目(202333030)

Modulation of HA-Al₂O₃ Composite Ceramic Paste and Its High Precision Curing Performance

LIU Qiuyu^1,2, LI Zhiwei^1,2, WANG Ao², WANG Zhihao³, WANG Yulan⁴, CHEN Fei^1,2

1. Xiangyang Demonstration Zone-Hubei Longzhong Laboratory, Wuhan University of Technology, Xiangyang 441000, China;
2. State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China;
3. Department of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China;
4. School of Stomatology, Wuhan University, Wuhan 430079, China

Received:2024-03-19 Revised:2024-04-27 Published:2024-10-15 Online:2024-10-16

摘要/Abstract

摘要： 利用高强度氧化铝(Al₂O₃)作为增强相,可以改善生物活性材料羟基磷灰石(HA)的强度,但传统水热法制备的HA-Al₂O₃陶瓷无法实现孔隙大小和孔隙率的精确控制,而光固化增材制造技术可以利用高性能光固化浆料实现HA-Al₂O₃陶瓷的高精度成型。通过加入分散剂、光引发剂及光吸收剂,调节HA-Al₂O₃浆料状态,缓解HA粉末、Al₂O₃粉末和光敏树脂之间折射率不匹配而产生的严重散射效应。本研究探索了光引发剂和分散剂的种类和含量对浆料的影响,流变性和固化性能随着两者含量增加先改善后削弱,光引发剂和分散剂最佳用量分别为0.5%和4%(质量分数)。比较了石墨和甲基黄两种光吸收剂对提高打印精度的影响,虽然石墨对浆料的打印精度和流变性均有改善,但是降低了打印质量,因此确定甲基黄的用量为5.0×10^-5,最终获得了适用于高精度打印的HA-Al₂O₃光固化浆料。

关键词: 陶瓷, HA-Al₂O₃, 精度调控, 固化深度, 流变性, 浆料调控

Abstract: High-strength alumina (Al₂O₃) was utilized as a reinforcing phase to improve the strength of hydroxyapatite (HA), a bioactive material, but the HA-Al₂O₃ ceramics prepared by traditional hydrothermal method could not achieve the precise control of pore size and porosity, whereas the light curing additive manufacturing technology could achieve the high precision molding of HA-Al₂O₃ ceramics through the high-performance photocurable slurry. The state of HA-Al₂O₃ slurry is adjusted by the addition of dispersant, photoinitiator, and photoabsorbent to alleviate the severe scattering effect caused by the refractive index mismatch between HA powder, Al₂O₃ powder, and photosensitive resin. In this study, the effects of the type and content of photoinitiator and dispersant on the slurry were explored. The rheological and curing properties of the slurry are first improved and then weakened with the addition of both, and the optimal dosages of photoinitiator and dispersant are 0.5% and 4% (mass fraction), respectively. The effects of two light absorbers, graphite and methyl yellow, on improving the printing accuracy were compared. Although graphite improves the printing accuracy and rheology of the slurry, it reduces the printing quality, so the dosage of 5.0×10^-5 methyl yellow is determined, and finally HA-Al₂O₃ slurries suitable for high precision printing are obtained.

Key words: ceramics, HA-Al₂O₃, precision control, curing depth, rheology, slurry control

中图分类号:

TQ174

刘秋玉, 黎志伟, 王澳, 王志浩, 王宇蓝, 陈斐. HA-Al₂O₃复相陶瓷浆料的调制及其高精度光固化性能[J]. 硅酸盐通报, 2024, 43(10): 3787-3797.

LIU Qiuyu, LI Zhiwei, WANG Ao, WANG Zhihao, WANG Yulan, CHEN Fei. Modulation of HA-Al₂O₃ Composite Ceramic Paste and Its High Precision Curing Performance[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(10): 3787-3797.

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HA-Al₂O₃复相陶瓷浆料的调制及其高精度光固化性能

Modulation of HA-Al₂O₃ Composite Ceramic Paste and Its High Precision Curing Performance

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