泡沫浸渍法制备的多孔铌基生物材料及性能

Fabrication of Porous Niobium-Based Biological Materials via Impregnation and Their Properties

摘要:

采用新型的泡沫浸渍法，以聚氨酯泡沫为载体制备出具有较高强度和良好生物相容性的多孔铌基材料。并借助分析天平、XRD、CS600碳硫测试仪和SEM对多孔铌的孔隙度、性能和微观结构进行了测试及观察。结果表明：制成的多孔铌，具有三维、连通孔隙结构且无任何杂质相，孔隙率为71.4%，孔径尺寸为500 μm，平均密度为2.45 g/cm3。三维连通多孔铌的平均弹性模量为815 MPa，抗压强度为36.62 MPa，与人体松质骨的力学性能相匹配。

Abstract:

The porous niobium-based materials with high strength and excellent biocompatibility were prepared by a novel foam impregnating process using polyurethane foam as the support. The porosity, microstructure and mechanical properties were characterized by XRD, SEM and so on. Results show that there are three-dimensional connected pore structure and pure phase in the prepared porous niobium-based materials. The porosity, pore size and average density is 71.4%, 500 μm and 2.45 g/cm3, respectively. The average elastic modulus of three-dimensional connected porous Nb is 815 MPa and the average compressive strength is 36.62 MPa, which coincide with cancellous bone in mechanical properties.