The Influence of Matrix Resin Toughening on the Compressive Properties of Carbon Fiber Composites

The study investigated the effects of a toughening agent and micron-sized toughening particles (TP) on the resin and carbon fiber-reinforced polymer (CFRP) composites, with a particular focus on compressive strength. The results showed that the addition of the toughening agent improved the overall m...

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Veröffentlicht in:Polymers 2024-11, Vol.16 (23), p.3328
Hauptverfasser: Ouyang, Xinfeng, Wang, Xiao, Chen, Qiufei, Ge, Guojie, Liu, Dong, Lin, Kang, Liu, Yunpeng, Zong, Yangyang, Duan, Shuo, Niu, Kangmin
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container_end_page
container_issue 23
container_start_page 3328
container_title Polymers
container_volume 16
creator Ouyang, Xinfeng
Wang, Xiao
Chen, Qiufei
Ge, Guojie
Liu, Dong
Lin, Kang
Liu, Yunpeng
Zong, Yangyang
Duan, Shuo
Niu, Kangmin
description The study investigated the effects of a toughening agent and micron-sized toughening particles (TP) on the resin and carbon fiber-reinforced polymer (CFRP) composites, with a particular focus on compressive strength. The results showed that the addition of the toughening agent improved the overall mechanical properties of both the resin and CFRP but had a minor effect on the residual compressive strength (CAI) of CFRP after impact. Compared to the pure toughening agent, the addition of TP increased the CAI, GIC, and GIIC of CFRP by 74%, 35%, and 68%, respectively. The SEM, ultrasonic C-scan, and metallographic microscopy were used to analyze the failure morphology and TP distribution. Compared to pure toughening agent modification, the introduction of TP led to the formation of continuous toughening particle layers, which reduced the compression damage area by 61%, significantly balancing and absorbing the load. This modification also resulted in typical kink band damage. This study found that resin toughening significantly improved the compressive strength of CFRP, while micron-sized toughening particles, in the form of toughening layers, notably improved the CAI. These findings provide valuable insights for enhancing the compression and impact resistance of CFRP.
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source MDPI - Multidisciplinary Digital Publishing Institute; PubMed Central; EZB Electronic Journals Library; PubMed Central Open Access
subjects Analysis
Carbon fiber reinforced plastics
Carbon fibers
Composite materials
Compressive properties
Compressive strength
Damage
Energy consumption
Epoxy resins
Fiber composites
Fiber reinforced polymers
Graphene
Impact resistance
Impact strength
Mechanical properties
Nanomaterials
Polymers
Resins
Tensile strength
title The Influence of Matrix Resin Toughening on the Compressive Properties of Carbon Fiber Composites
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