鳖甲的显微结构与成分分析  

Analysis on the Microstructure and Chemical Composition of Trionychid Turtle Shell

作　　者：周后恩[1] 王家俊[1,2] 刘亚平[1] 沈洁[2] 

机构地区：[1]浙江理工大学材料与纺织学院,杭州310018 [2]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2012年第2期277-282,共6页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：教育部"长江学者和创新团队发展计划"创新团队项目(IRT0654)

摘　　要：为了设计开发出高强轻量型仿生复合材料,对鳖甲的微结构和化学成分进行观察和分析,发现鳖甲是一种坚硬又富有韧性的多尺度层状超混杂复合材料。外密质层外层中4小层按不同方向定向排列的细小棒状羟基磷灰石晶体和4小层片层状羟基磷灰石晶体相互交替存在。中间松质层为封闭的孔隙结构,孔隙周围缠绕着胶原纤维。内密质层含平行肋骨长轴方向定向排列的丝状胶原纤维。测试了鳖甲的弯曲性能,发现其不含横凹缝时的弯曲性能较好。In order to design and develop high-intensity and light-weight biomimetic composite materi- al, trionychid turtle shell microstructure is observed, and its chemical composition is analyzed. Results re- veal that trionychid turtle shell is a kind of multi-scale layer super-hybrid composite material which is hard and tough. The outer part of the outer dense layer contained overlappes alternately 4 pieces of different o- rientation-arranged slim and clubbes hydroxyapatite crystal and 4 pieces of thin platelike hydroxyapatite crystal separately. The intermediate spongy layer has a closed-cell structure with collagen fibers enwinding round the holes. In the inner dense layer there are filamentous collagen fibers arrayed in a alignment parallel with costal prolate axis. The bending property of trionychid turtle shell without horizontal concave crack is better by laboratory tested.

关 键 词：仿生复合材料 鳖甲 微结构 结构特征 

分 类 号：TB303[一般工业技术—材料科学与工程]