Simulation of the Oxygen Permeability of a Composite Container

Defauchy, Virginie; Corre, Hélène Le; Colin, Xavier

doi:10.3390/jcs2020021

Cited by 7 publications

(3 citation statements)

References 14 publications

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“…Considering its storage and transportation applications, gas permeability of the CFRP composite has also been investigated. For the well-cured composite, gases could pass through the free volume of the epoxy matrix under diffusion-controlled mechanism, driven by the concentration gradient [39][40][41][42][43]. In order to improve the barrier properties, thin-ply [44], Al 2 O 3 nanoparticles [45], clay-based film [46,47], aluminium foil [48] and surface coatings [49] have been applied to the CFRP composites.…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

Effect of graphene nanoplatelets on the mechanical and gas barrier properties of woven carbon fibre/epoxy composites

et al. 2021

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Carbon-fibre-reinforced polymer (CFRP) composites are promising materials for non-metallic pipe applications in the oil and gas industry owing to their high corrosion resistance, specific strength and stiffness. However, CFRP has poor gas barrier performance meaning that a liner has to be inserted. Graphene-based nanomaterials have been demonstrated to improve gas barrier properties in thermoplastic polymers, and thus, a CFRP–graphene hybrid composite could provide an alternative to lined pipes. In this work, a method combining spray coating with vacuum-assisted resin infusion was developed to fabricate CFRP hybrid composites with preferred in-plane aligned graphene nanoplatelets. Tensile and flexural properties, as well as CO2 gas permeability, were evaluated. It was illustrated that both tensile and flexural properties performed better under relatively low GNP loadings (< 0.2 vol%), while gas barrier property was significantly improved with the increasing GNP loadings which fits the Nielsen model with an effective GNP aspect ratio of 350. Graphical abstract

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Section: Graphical Abstract Introductionmentioning

confidence: 99%

Effect of graphene nanoplatelets on the mechanical and gas barrier properties of woven carbon fibre/epoxy composites

et al. 2021

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“…However, TOL // values reported in Table 3 are twice thicker at 210 • C and four times thicker at 180 • C than expected. This discrepancy can be only explained by the existence of a fiber/matrix interphase highly permeable to oxygen [12].…”

Section: C)mentioning

confidence: 99%

Thermal Ageing of a Hybrid Composite Rod for Next Generation Overhead Power Lines

Minard

Colin

2019

J. Compos. Sci.

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The thermal stability of a hybrid composite rod, made of epoxy-anhydride matrix reinforced with both unidirectional carbon and glass fibers, has been evaluated between 180 and 210 °C in different nitrogen/oxygen gas mixtures with several conventional but complementary laboratory techniques such as Fourier transform infrared spectrometry, thermogravimetry, differential calorimetry, optical microscopy, and three-point bending. Thermolysis predominates in the carbon-fiber core, where it induces an efficient chain scission process, leading to a decrease in the glass transition temperature and the formation of small macromolecular fragments, presumably diacids. These very polar fragments remain trapped in the carbon core, where they initiate micro-cavities when their concentration exceeds the solubility threshold. These micro-cavities accumulate in rich-matrix regions, where they coalesce to form apparent large cracks. They are thus responsible for the catastrophic decrease in elastic and fracture properties of the composite rod. In contrast, thermal oxidation affects a too thin superficial layer (typically 60 µm) of the glass-fiber shell to change significantly the global mechanical behavior of the composite rod. Based on these experimental observations, a kinetic model has been proposed to predict the initiation and development of damage in the composite rod. Its validity is successfully checked by comparing its predictions with the experimental results.

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“…in this application meaning the difference in ambient partial pressure

{pp}_{i_{italicamb}}

and upstream/inner partial pressure pp i of the gas i ), was used during these early experiments and is still applicable 5 . Investigations on gas permeability on composite containers without inner‐liner have also been performed using the same basic principles 6 …”

Section: Introductionmentioning

confidence: 99%

Permeability properties of a pressure induced compacted polymer liner in gas cylinder

Silvanius

Frånberg

2020

J of Applied Polymer Sci

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The permeability properties of composite gas cylinders for breathing gas with polymer inner‐liner are investigated. The cylinder wall can be described as a composite membrane consisting of two layers. The permeability properties of the cylinder are presented as permeability coefficient and permselectivity. Deviation from the expected gas components might lead to incidents and potentially harmful situations when breathing gas from a compressed gas cylinder. Hence, gas permeability and potential changes in gas composition, must be considered when choosing cylinder materials. Cases of decompression sickness initiated this study. Experimental data show that pressure and oxygen fraction in the gas cylinder drops and that the permeability coefficient varies depending on the inner pressure. Permeability coefficients of 0.62–0.90 Barrer for oxygen and 0.44–0.56 Barrer for nitrogen are measured. Cracks in the inner‐liner have caused an accentuated drop in of oxygen fraction and pressure.

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Simulation of the Oxygen Permeability of a Composite Container

Cited by 7 publications

References 14 publications

Effect of graphene nanoplatelets on the mechanical and gas barrier properties of woven carbon fibre/epoxy composites

Effect of graphene nanoplatelets on the mechanical and gas barrier properties of woven carbon fibre/epoxy composites

Thermal Ageing of a Hybrid Composite Rod for Next Generation Overhead Power Lines

Permeability properties of a pressure induced compacted polymer liner in gas cylinder

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