具有石墨烯纳米片和还原氧化石墨烯的多尺度双改性纤维/环氧树脂纳米复合材料的显著疲劳寿命增强

Significant Fatigue Life Enhancement in Multiscale Doubly-Modified Fiber/Epoxy Nanocomposites with Graphene Nanoplatelets and Reduced-Graphene Oxide.

作者信息

Rafiee Mohammad, Hosseini Rad Somayeh, Nitzsche Fred, Laliberte Jeremy, R Labrosse Michel

机构信息

Department of Mechanical Engineering, University of Ottawa, Ottawa, ON K1N 6N5, Canada.

Department of Mechanical Engineering, Polytechnique Montreal, Montreal, QC H3T 1J4, Canada.

出版信息

Polymers (Basel). 2020 Sep 18;12(9):2135. doi: 10.3390/polym12092135.

DOI:10.3390/polym12092135

PMID:32962011

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7570175/

Abstract

We report the fatigue behavior of a novel multiscale fiberglass/epoxy composite modified with reduced-graphene oxide (rGO) and graphene nanoplatelets (GNP). A novel and cost-effective fabrication method based on vacuum assisted resin transfer molding (VARTM) method was used for manufacturing the composite laminates. Morphological and mechanical analysis of composites showed a successful dispersion of nano-fillers and a remarkable improvement in fatigue life of the nanocomposites. The experimental results revealed that all rGO concentrations resulted in a significant increase in fatigue life of the nanocomposites. These enhancements can be explained by the creation of stronger links between the nanoparticles fiberglass and epoxy. The experimental results also showed that lower concentrations of GNPs lead to an increase in fatigue life of nanocomposites; however, a decrease in their fatigue life can be seen at higher loadings.

摘要

我们报告了一种用还原氧化石墨烯（rGO）和石墨烯纳米片（GNP）改性的新型多尺度玻璃纤维/环氧树脂复合材料的疲劳行为。基于真空辅助树脂传递模塑（VARTM）方法的一种新颖且具有成本效益的制造方法被用于制造复合材料层压板。复合材料的形态和力学分析表明纳米填料成功分散，并且纳米复合材料的疲劳寿命有显著提高。实验结果表明，所有rGO浓度都导致纳米复合材料的疲劳寿命显著增加。这些增强作用可以通过纳米颗粒、玻璃纤维和环氧树脂之间形成更强的连接来解释。实验结果还表明，较低浓度的GNP会导致纳米复合材料的疲劳寿命增加；然而，在较高载荷下可以看到其疲劳寿命下降。