Article
  • Analysis of the Mechanical Properties of Epoxy Resin Matrix Composites upon Multi-scale Synergistic Strengthening and Toughening

  • Keshan Liang, Xin Li*, **,† , Zhuo Wang***, Li Tang****, and Yujun Cao****

  • College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, HuNan, P.R. China
    *State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute,
    National University of Defense Technology, Hefei, 230037, AnHui, P.R. China
    **Advanced Laser Technology Laboratory of Anhui Province, Hefei, 230037, AnHui, P.R. China
    ***HRG International Institute (He Fei) of Research and Innovation, Hefei, 230601, AnHui, P.R. China
    ****Academy of Hi-Tech Research, Hunan Institute of Traffic Engineering, Changsha 410003, HuNan, P.R. China

  • Multi-scale Synergistic Strengthening and Toughening에 따른 에폭시 수지 매트릭스 복합체의 기계적 특성 분석

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.

Abstract

A multi-scale synergistic modification technology is proposed to strengthen and toughen epoxy resin matrix composites, which can be used in the direct extrusion fabrication process. The toughness performance of epoxy resin matrix composites can be improved without compromising other advantages by adding micrometer- and nanometer-scale fillers to the matrix and optimizing the content of fillers, surface treatment process, dispersion method, and other parameters. We analyzed and discussed the mechanical properties of epoxy-based composites with micrometer-scale fillers, nanometer-scale fillers, and mixed multi-scale fillers. When 15 phr carbon fibers (15CFs), 6 phr rubber nanoparticles (6RNPs), and 1 phr carbon nanotubes (1CNTs) are added to epoxy resins (EPs), the tensile strength reached 91.6 MPa, 28.8% higher than that of the pure EPs; the achieved elastic modulus 4.72 GPa, 77.4% higher than the pure EPs; the fracture toughness was 2.97 MPa m1/2, 241.4% of the pure EPs, while the impact strength reached 63.4 kJ/m2, 369.6% higher than the pure EPs. The results show that the multi-scale reinforcements exhibit a synergistic effect on the strength and toughness of the composites.


Keywords: direct extrusion fabrication, carbon fibers, carbon nanotubes, rubber nanoparticles, mechanical properties.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2023; 47(2): 143-150

    Published online Mar 25, 2023

  • 10.7317/pk.2023.47.2.143
  • Received on Oct 19, 2022
  • Revised on Nov 13, 2022
  • Accepted on Dec 13, 2022

Correspondence to

  • Xin Li

  • *State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute,
    National University of Defense Technology, Hefei, 230037, AnHui, P.R. China
    **Advanced Laser Technology Laboratory of Anhui Province, Hefei, 230037, AnHui, P.R. China

  • E-mail: lixinkiller@nudt.edu.cn