发泡法制备TCP陶瓷的工艺及其结构与性能研究

Study of Preparation of Biodegradable TCP-Ceramics by Foaming and Its Structure and Properties

研究了用发泡法制备生物降解磷酸三钙（ＴＣＰ）陶瓷的工艺，并讨论了这种材料的结构及性能．有关性能测试表明：材料表面及内部均匀分布着１００～８００μｍ的气孔，气孔率为４５～５０％，抗压强度为１５ＭＰａ，材料在模拟体液中有一定的溶解性。ＳＥＭ，ＸＲＤ及ＩＲ光谱测试结果表明：材料内部有很多连通孔隙，颗粒间的连结为颈部连结；材料的主晶相是β－Ｃａ３（ＰＯ４）２（β－ＴＣＰ），此外还存在部分非晶相。动物实验结果表明：材料植入体内，经过一段时间发生一定量的降解．

The paper studies the process of preparing biodegradable TCP-ceramics by foaming,and discusses its structure and properties. Relevant performance tests show that the pores are well-distributed in the surface and insides,its porosity is 45￣ 50%, its compressive strength is 15MPa,and the material has a certain dissolubility in simulated body fluid (SBF). The results of SEM、XRD and IR spectrum show that there are many connected pores insides,the particles are neck-connected,and the main crystalline phase is β-TCP,with a little noncrystalline phase. The results of animal tests in vivo prove that after implantation the material degrades to a certain extent.