Zhenyu Wang , Xingle Zhang , Changli Cheng , Yanjun Liu , Daopeng Qu , Pengpeng Shao , Jing Jiang , Yu Liu
{"title":"3D printing of architectured epoxy-based composite lattices with exceptional strength and toughness","authors":"Zhenyu Wang , Xingle Zhang , Changli Cheng , Yanjun Liu , Daopeng Qu , Pengpeng Shao , Jing Jiang , Yu Liu","doi":"10.1016/j.compositesb.2023.110653","DOIUrl":null,"url":null,"abstract":"<div><p>Due to the exceptional mechanical properties<span><span><span>, epoxy-based composites have been widely applied as critical aerospace components, semiconductor packaging materials, and multifunctional coatings and adhesives. However, the brittle nature of epoxy resin leads to poor resistance to crack initiation and propagation, significantly hindering their applications as high-performance composites. Herein, we develop an architectured composite lattice with simultaneous high toughness and </span>strength<span> through a 3D printing technique. Strengthening and toughening zones possessing solid and highly ordered lattice structures, respectively, are rationally assembled into a layered structure. The resultant composite lattices deliver significantly improved flexural properties and crack resistance properties, exhibiting 400%, 83% and 36% higher toughness, specific strength, and </span></span>fracture toughness than their solid counterpart, respectively. The exceptional strength and toughness of the composite lattices come from the synergetic effect of the strengthening and toughening zones, as confirmed by both experimental and theoretical analysis. The current findings provide an effective strategy for the fabrication epoxy-based composites with precisely controlled structures and mechanical performances.</span></p></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":null,"pages":null},"PeriodicalIF":12.7000,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites Part B: Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359836823001567","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 4
Abstract
Due to the exceptional mechanical properties, epoxy-based composites have been widely applied as critical aerospace components, semiconductor packaging materials, and multifunctional coatings and adhesives. However, the brittle nature of epoxy resin leads to poor resistance to crack initiation and propagation, significantly hindering their applications as high-performance composites. Herein, we develop an architectured composite lattice with simultaneous high toughness and strength through a 3D printing technique. Strengthening and toughening zones possessing solid and highly ordered lattice structures, respectively, are rationally assembled into a layered structure. The resultant composite lattices deliver significantly improved flexural properties and crack resistance properties, exhibiting 400%, 83% and 36% higher toughness, specific strength, and fracture toughness than their solid counterpart, respectively. The exceptional strength and toughness of the composite lattices come from the synergetic effect of the strengthening and toughening zones, as confirmed by both experimental and theoretical analysis. The current findings provide an effective strategy for the fabrication epoxy-based composites with precisely controlled structures and mechanical performances.
期刊介绍:
Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development.
The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.