Direct ink writing of epoxy-based composite lattice and its strengthening and toughening mechanisms

被引：0
|
作者：
Zhang X. [1 ]
Yang J. [1 ]
Cheng C. [3 ]
Liu Y. [1 ,2 ]
Wang Z. [1 ,2 ]
机构：
[1] School of Mechanical Engineering, Jiangnan University, Wuxi
[2] Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi
[3] Jiangda Vibration Isolator CO., LTD., Wuxi
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2023年 / 40卷 / 10期
基金：
中国国家自然科学基金;
关键词：
3D printing; direct ink writing; epoxy-based composite; lattice structure; strengthening and toughening;
D O I：
10.13801/j.cnki.fhclxb.20230104.002
中图分类号：
学科分类号：
摘要：
Due to the high strength and lightweight, epoxy-based composites have high application value in the fields of aerospace and automotive. However, the brittle nature of epoxy resins significantly hinder their application in real engineering, and it is still a great challenge to improve the strength and toughness of the epoxy-based composites. Herein, we develop an epoxy-based composite lattice composing of strengthening zones and toughening zones, which are rationally assembled into a layered structure through direct ink writing technique. The physical and chemical properties of the epoxy-based composite inks and printed filaments were characterized by rotational rheometer and optical microscope, and a universal testing machine was used to evaluate the mechanical properties of the epoxy-based composite lattice with various structural parameters. It is found that the specific strength, toughness and fracture toughness of the epoxy-based composite lattice increase by 95%, 630% and 19.1% compared to the solid composite, respectively. Based on the fracture surfaces and finite element analysis, it can be concluded that the strengthening zones ensure the structural strength, while the toughening zones are capable of effectively sharing the external deformation and preventing the crack propagation. The current research provides new ideas and theoretical basis for the design, manufacturing, and applications of structural nanocomposites with high strength and toughness. © 2023 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
引用
收藏
页码：5621 / 5629
页数：8
相关论文
共 30 条
  • [1] MI X Q, LIANG N, XU H F, Et al., Toughness and its mechanisms in epoxy resins[J], Progress in Materials Science, 130, (2022)
  • [2] SRINIVASAN D V, RAVICHANDRAN V, IDAPALAPATI S., Failure analysis of GFRP single lap joints tailored with a combination of tough epoxy and hyperelastic adhesives[J], Composites Part B: Engineering, 200, (2020)
  • [3] HUNT C J, MORABITO F, GRACE C, Et al., A review of composite lattice structures[J], Composite Structures, 284, (2022)
  • [4] NGO T D, KASHANI A, IMBALZANO G, Et al., Additive manufacturing (3D printing): A review of materials, methods, applications and challenges[J], Composites Part B: Engineering, 143, pp. 172-196, (2018)
  • [5] KADHIM N, ZAMAN A, JIANG M, Et al., A cast-in-place fabrication of high performance epoxy composites cured in an in-situ synthesized 3D foam of nanofibers[J], Composites Part B: Engineering, 205, (2021)
  • [6] JIA J, SUN X, LIN X, Et al., Exceptional electrical conductivity and fracture resistance of 3D interconnected graphene foam/epoxy composites[J], ACS Nano, 8, 6, pp. 5774-5783, (2014)
  • [7] CHIANG Y, TUNG C C, LIN X D, Et al., Geometrically toughening mechanism of cellular composites inspired by Fibonacci lattice in Liquidambar formosana[J], Composite Structures, 262, (2021)
  • [8] SONG W, KONSTANTELLOS G, LI D, Et al., Short carbon fibre-reinforced epoxy foams with isotropic cellular structure and anisotropic mechanical response produced from liquid foam templates[J], Composites Science and Technology, 184, (2019)
  • [9] GARCIA C D, SHAHAPURKAR K, DODDAMANI M, Et al., Effect of arctic environment on flexural behavior of fly ash cenosphere reinforced epoxy syntactic foams[J], Composites Part B: Engineering, 151, pp. 265-273, (2018)
  • [10] HANKS B, BERTHEL J, FRECKER M, Et al., Mechanical properties of additively manufactured metal lattice structures: Data review and design interface[J], Additive Manufacturing, 35, (2020)
123