仿生Al_(2)O_(3)/SiCnw/环氧复合材料的制备及性能研究  

Preparation and mechanical characterization of bioinspired Al_(2)O_(3)/SiCnw/Epoxy composites

作　　者：张宇贝 孙晓毅 李逢时 张蔷 卢洪来 岳永海 ZHANG Yubei;SUN Xiaoyi;LI Fengshi;ZHANG Qiang;LU Honglai;YUE Yonghai(School of Chemistry,Beihang University,Beijing 102206;International Institute for Interdisciplinary and Frontiers,Beihang University,Beijing 100191,China)

机构地区：[1]北京航空航天大学化学学院,北京102206 [2]北京航空航天大学国际前沿交叉科学研究院,北京100191

出　　处：《电子显微学报》2024年第5期571-579,共9页Journal of Chinese Electron Microscopy Society

基　　金：国家自然科学基金资助项目(Nos.U23A20542,52102086);北京市科技新星计划资助;北京航空航天大学前沿交叉基金.

摘　　要：生物结构为设计和制造具有优异性能的先进材料提供了灵感,本文受螳螂虾中抗冲击区域结构启发,发展了一种基于3D打印制备氧化铝正弦波纹结构与冰模板法构筑碳化硅纳米线层状结构相结合的多组装策略,并通过浸渗环氧树脂,最终成功构建了仿生陶瓷-聚合物复合材料。实验表明,波纹结构和与之垂直排列的层状结构通过多尺度耦合强化作用,同时利用聚合物阻止了裂纹扩展,使得该复合结构的力学性能较于单一结构得到了提升。这种通过双组装高效制备仿生多级次结构的策略,在航空航天、装甲防护以及电磁屏蔽等领域具有较大应用潜力。Biomaterials with hierarchical structures provide inspiration for designing and manufacturing biomimetic materials with excellent mechanical properties.This article is inspired by the impact region in the mantis shrimp in nature.A high⁃efficiency biomimetic multi⁃level assembly strategy based on the combination of 3D printing technology to construct Al_(2)O_(3)sinusoidal structure and ice⁃template method to construct SiCnw laminar structure is developed.Finally,the bioinspired Al_(2)O_(3)/SiCnw/Epoxy composites is successfully constructed by impregnating epoxy resin.The results demonstrate that the mechanical properties of the composite structure are enhanced compared to a single sinusoidal structure,owing to the reinforcing effect of multiscale coupling between the sinusoidal structure and the laminar structure.Furthermore,the polymer hinders crack propagation.This strategy of efficiently preparing biomimetic multiscale structures through double assembly has great potential for applications in aerospace,armor protection,and electromagnetic shielding.

关 键 词：3D打印 冰模板法 仿生多层级结构 结构表征 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TB321[化学工程—陶瓷工业] TB324[化学工程—硅酸盐工业] TQ174.6