Controlling mass loss from RTM6 epoxy resin under simulated vacuum infusion conditions

Parsons, Andrew J.; Gonciaruk, Aleksandra; Zeng, Xuesen; Thomann, Fernando Sarce; Schubel, Peter; Lorrillard, Julien; Johnson, M. S.

doi:10.1016/j.polymertesting.2022.107473

Cited by 3 publications

(1 citation statement)

References 28 publications

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“…This resin was selected because it is already qualified for aerospace applications. In addition, it has a low viscosity (0.05 Pa•s) at the injection temperature (about 80 • C) so that it can be used in liquid composite molding to manufacture components with complex geometries and large dimensions [46]. Several studies can be found in the literature on the use of the RTM6 resin for the fabrication of epoxy/MWCNT and epoxy/SWCNT nanocomposites [47][48][49]; yet, to the best of our knowledge, its use in combination with hybrid carbon fillers has not been investigated.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Carbon Nanocomposites Made of Aerospace-Grade Epoxy Showing Synergistic Effects in Electrical Properties and High Processability

et al. 2023

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In this work, we investigate the processability and the volumetric electrical properties of nanocomposites made of aerospace-grade RTM6, loaded with different carbon nanoparticles. Nanocomposites with graphene nanoplatelets (GNP), single-walled carbon nanotubes (SWCNT) and hybrid GNP/SWCNT in the ratio 2:8 (GNP2SWCNT8), 5:5 (GNP5SWCNT5) and 8:2 (GNP8SWCNT2) were manufactured and analyzed. The hybrid nanofillers are observed to have synergistic properties as epoxy/hybrid mixtures showed better processability than epoxy/SWCNT, while maintaining high values of electrical conductivity. On the other hand, epoxy/SWCNT nanocomposites present the highest electrical conductivities with the formation of a percolating conductive network at lower filler content, but very large viscosity values and filler dispersion issues, which significantly affect the final quality of the samples. Hybrid nanofiller allows us to overcome the manufacturing issues typically associated with the use of SWCNTs. The combination of low viscosity and high electrical conductivity makes the hybrid nanofiller a good candidate for the fabrication of aerospace-grade nanocomposites with multifunctional properties.

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Section: Introductionmentioning

confidence: 99%

Hybrid Carbon Nanocomposites Made of Aerospace-Grade Epoxy Showing Synergistic Effects in Electrical Properties and High Processability

et al. 2023

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The effect of semi-curing on neat resin mode I fracture properties

O’Leary,

Hartley,

McMahon

et al. 2024

Plastics, Rubber and Composites: Macromolecular Engineering

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The sensitivity of fracture toughness to the cure path of a high-performance hot infusion epoxy resin (EP2410) is assessed in this study through single-edge notch bend testing of neat resin specimens. The specimens were prepared using a two-stage semi-curing process. In the initial stage, the partial degree of cure and the semi-cure temperature were varied. In the second stage, samples were heated to 180 °C for a secondary post-cure. These samples were compared to two baseline samples produced using the manufacturer's recommended cure cycle of 180 °C, and a modified isothermal cure at a lower cure temperature of 140 °C. The results show that the semi-curing path has no statistically significant influence on the mode I fracture toughness of the material studied here. Sample similarity was confirmed through SEM examination of the fracture surface, which showed minimal variation in surface topography. These findings open new possibilities to use this type of material for novel manufacturing processes involving semi-curing steps.

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Resin Flow Analysis for the Foam Core Sandwich Spoiler by Vacuum-Assisted Resin Injection Process

Yan

Xia

et al. 2022

Materials

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This article presents the numerical analysis and experimental investigation for the manufacturing of a foam core sandwich spoiler by vacuum-assisted resin injection (VARI) process. To find an injection scheme that guarantees both a good impregnation of the preform and a filling time compatible with the process window, the finite element model (FEM) was applied to analyze the effect of different injection schemes on the resin flow front patterns. Based on the obtained results, two optimal injection schemes are selected to form the spoiler structure. The experimental results show that the best molding quality can be achieved from the thick-end injection with a thin-end exit scheme. The comparison between simulation and experimental results shows that the overall deviation of the numerical analysis on resin flow time is 15.9%.

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Controlling mass loss from RTM6 epoxy resin under simulated vacuum infusion conditions

Cited by 3 publications

References 28 publications

Hybrid Carbon Nanocomposites Made of Aerospace-Grade Epoxy Showing Synergistic Effects in Electrical Properties and High Processability

Hybrid Carbon Nanocomposites Made of Aerospace-Grade Epoxy Showing Synergistic Effects in Electrical Properties and High Processability

The effect of semi-curing on neat resin mode I fracture properties

Resin Flow Analysis for the Foam Core Sandwich Spoiler by Vacuum-Assisted Resin Injection Process

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