水基高固相含量HAP悬浮体的制备  

Preparing of High Concentrated Aqueous HAP suspension

作　　者：卢志华[1] 孙康宁[1] 李爱民[1] 

机构地区：[1]山东大学材料液态结构及其遗传性教育部重点实验室/工程陶瓷山东省重点实验室,济南250061

出　　处：《生物骨科材料与临床研究》2004年第3期42-45,共4页Orthopaedic Biomechanics Materials and Clinical Study

基　　金：本文得到国家自然科学基金资助(基金号:30170269)

摘　　要：目的 制备形状复杂、成份均匀和可靠性高的陶瓷材料。方法系统的研究了粉料二次处理、固含量、分散剂加入量及使用条件(悬浮体pH值)等因素在羟基磷灰石陶瓷凝胶注模成型过程中对于浆料粘度的影响。结果配制出高陶瓷粉体含量又具有良好流动性的浆料,并制备出固相含量65wt％,粘度为0.85Pa.s的HAP浆料。结论 凝胶注模成型是一种是的理想成型工艺。Objective Investigate gelcasting as a new ceramic forming technique, which is suitable for the fabrication of complex parts with no density differences. Methods For this technique, the most important is preparing suspension with high solid content and low viscosity. Results In this work, the influence of presinter , solid content and the concentration of additive on apparent viscosity during HAP gelcasting process is studied by the numbers. Conclusion At last, suspension with 65wt% solid was successfully made which viscosity is only 0.85 Pa.s.

关 键 词：凝胶注模工艺 原位成型 羟基磷灰石 

分 类 号：R318.08[医药卫生—生物医学工程]