中文摘要：

采用高温固相烧结法,在1250℃烧结并保温2h后迅速冷却得到斜方相磷酸钙骨水泥（calcium phosphate cement,CPC）粉体。向CPC粉体中加入不同含量、粒径不等的明胶颗粒得到多孔材料。考察了多孔材料的微观结构、力学性能和气孔率的变化,并分析明胶的成孔机制。结果表明：在CPC粉体中添加明胶后,随着明胶含量的增加,CPC水化体的气孔率逐渐增大,力学性能逐渐降低且粒径较大明胶颗粒的影响更为明显。CPC水化产物中孔隙周围结晶形态有明显变化,加入明胶之前为针状晶体;加入明胶之后为片状晶体。明胶大分子在羟基磷灰石生成过程中起固定作用,水化后溶于水,明胶微球原本占据的空间将被保留从而形成大孔。

英文摘要：

Monoclinic calcium phosphate cement （CPC） powder was obtained by sintering at 1 250 ℃ for 2 h via the high-temperature solid sintering method. Gelatin of different mass contents and particle sizes was mixed with the CPC powder in order to obtain porous materials. The variations of microstructure, mechanical strength and porosity were investigated, and the porosity mechanism of gelatin was analyzed. The results indicate that when gelatin content is increased, the porosity increased and the mechanical strength decline. This is obvious for large particle-size powder. The setting products in the holes filled with gelatin are lamellar crystal. For samples without gelatin, the setting products are acicular crystal. The gelatin macromolecules fix the hydroxyapatite grains, and then the gelatin dissolves in water, which allows the spaces to remain and pores to be formed.