无机材料学报2026，Vol.41Issue(5)：573-582,10.DOI:10.15541/jim20250341
多尺度类贝壳珍珠质层状与梯度结构仿生陶瓷-树脂复合材料
Bioinspired Nacre-like Ceramic-polymer Composites with Multiscale Layered and Gradient Structures
摘要
Abstract
Due to their intrinsic brittleness and high sensitivity to structural flaws,ceramics face a fundamental limitation in applications that require mechanical load-bearing capacity,impact resistance,and reliable performance under complex service conditions.Natural ceramic-based materials,such as nacre,have evolved intricate multiscale structures through long-term evolutionary processes,effectively integrating high strength and fracture toughness,offering valuable inspiration for the design of synthetic ceramics.This study utilized an accumulative rolling technique combined with a layer-by-layer assembly process to fabricate bioinspired ceramic-polymer composites featuring nacre-like layered and gradient structures at the multiscale.The composites exhibit a characteristic nacre-like"brick-and-mortar"architecture at the microscale,as well as periodic or gradient variations in ceramic content at the mesoscale,collectively forming bioinspired multiscale layered and gradient structures.The mechanical properties of the bioinspired composites were systematically investigated and compared with uniform composites with equivalent ceramic content.The relationships between the bioinspired structures,mechanical properties,and damage characteristics were elucidated.The results demonstrate that the bioinspired composites exhibit variations of up to several times in local hardness and elastic modulus along the thickness direction.In particular,the gradient composite with a"soft-hard-soft"configuration achieves superior strength-toughness synergy,demonstrating significantly higher strength,work of fracture,and fracture and impact toughness compared to the uniform materials with the same ceramic content.This enhancement is primarily attributed to the ability of this architecture to broaden stress distribution,reduce local stress concentrations,and facilitate extensive dissipation of mechanical energy.This study provides a useful reference and guidance for the structural design of strong and tough bioinspired ceramic-polymer composites.关键词
陶瓷-树脂复合材料/仿生设计/多尺度结构/梯度/力学性能Key words
ceramic-polymer composite/bioinspired design/multiscale structure/gradient/mechanical property分类
通用工业技术引用本文复制引用
高科丰,何昕昕,刘增乾,张哲峰..多尺度类贝壳珍珠质层状与梯度结构仿生陶瓷-树脂复合材料[J].无机材料学报,2026,41(5):573-582,10.基金项目
国家重点研发计划(2020YFA0710404) （2020YFA0710404）
国家自然科学基金(52173269,52471152)National Key R&D Program of China(2020YFA0710404) （52173269,52471152）
National Natural Science Foundation of China(52173269,52471152) （52173269,52471152）
