Liquid composite moulding of fibre nanocomposites

Lekakou, Constantina; Hearn, Allison; Murugesh, A. K.; Page, B. Le

doi:10.1179/174328407x157371

Cited by 10 publications

(6 citation statements)

References 23 publications

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“…Furthermore, the area of the exotherm in the silica-epoxy system (see Figure 6(b)) is larger than the corresponding area in the pure epoxy, indicating that the silica-epoxy system has reached more advanced curing. It has been reported [22,23] that the hydroxyl group acts as a catalyst in the curing reaction between the epoxy and amine groups which might lead to promotion of the curing reaction at the surface of silica nanoparticles that contain hydroxyl groups as part of the silanol groups. Table 1 (% cure = 100 -% non-cure) and…”

Section: Dsc and Dmta Studies Of Curingmentioning

confidence: 99%

Processability studies of silica‐thermoset polymer matrix nanocomposites

Lekakou

Kontodimopoulos

Murugesh

et al. 2007

Polymer Engineering & Sci

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The aim of this study is to investigate the processability of silica-thermoset polymer matrix nanocomposites in terms of dispersion of silica nanoparticles and their effect on curing. Two thermosetting resins were considered, an epoxy and a polyester resin, with 5 % silica, although 1% silica was also used in preliminary studies in the polyester system. Various combinations of mechanical mixing and sonication were investigated for the dispersion of silica nanoparticles under different processing conditions and times in solvent-free and solvent-containing systems. It was found that the best dispersion route involved a solvent-aided dispersion technique. Consequently, different procedures for the solvent removal were investigated. Optical microscopy and SEM were used to characterize the resulting nanocomposites. DSC and rheological DMTA tests demonstrated that the silica nanoparticles shorten the gel time and promote curing in these thermosetting systems.3

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Section: Dsc and Dmta Studies Of Curingmentioning

confidence: 99%

Processability studies of silica‐thermoset polymer matrix nanocomposites

Lekakou

Kontodimopoulos

Murugesh

et al. 2007

Polymer Engineering & Sci

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“…After the pre-wetting of the GF-fabric with the GNP-filled sizing agent, the plies were stacked in order to form a laminate, having a thickness of ∼1.1 mm, depending on the amount of GNP sprayed over the fabric surface. At this point, it was possible to produce the composite applying the infusion system 31 , 33 . Therefore, the 4-ply stack was inserted in a vacuum bag.…”

Section: Methodsmentioning

confidence: 99%

Electromagnetic wave absorption and structural properties of wide-band absorber made of graphene-printed glass-fibre composite

Marra

Lecini

Pisu³

et al. 2018

Sci Rep

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Lightweight composites combining electromagnetic wave absorption and excellent mechanical properties are required in spacecraft and aircraft. A one- dimensional metamaterial absorber consisting of a stack of glass fibre/epoxy layers and graphene nanoplatelets/epoxy films was proposed and fabricated through a facile air-spraying based printing technology and a liquid resin infusion method. The production process allows an optimum dispersion of graphene nanoplatelets, promoting adhesion and mechanical integration of the glass fibre/epoxy layers with the graphene nanoplatelets/epoxy films. According to experimental results, the proposed wide-band absorber provides a reflection coefficient lower than −10 dB in the range 8.5–16.7 GHz and an improvement of flexural modulus of more than 15%, with a total thickness of ∼1 mm. Outstanding electromagnetic wave absorption and mechanical performance make the proposed absorber more competitive in aeronautical and aerospace applications.

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“…As explained above, adding nanoclay to the neat epoxy has, in general, helped reduce its moisture uptake as well as enhance some of its physical, thermal and mechanical properties. The combination of the nanoclay together with glass fibres as reinforcements in a hybrid nanocomposite was the next step that researchers took during the past decade [41,43,53,[102][103][104][105][106][107][108][109]. Avila et al [103] investigated S2-glass/nanoclay/epoxy laminated composite where 1.0 wt% to 10.0 wt% nanoclay were mixed with epoxy by stepwise direct mixing and the hybrid composite is fabricated using the conventional stacking sequence and vacuum assisted wet lay-up lamination.…”

Section: Hybrid Glass Fibre Reinforced Epoxy Nanoclay Compositesmentioning

confidence: 99%

Mechanical and Moisture Barrier Properties of Epoxy–Nanoclay and Hybrid Epoxy–Nanoclay Glass Fibre Composites: A Review

2022

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Epoxy clay nanocomposites have been proven to have improved mechanical, thermal and physical properties over pristine matrix. Thus, the fields of application of epoxy–clay nanocomposites along with their hybrid glass/carbon fibre reinforced composites have grown tremendously during the last few decades. The present review paper covers the research work performed on epoxy clay nanocomposites. It includes the influence of the processing techniques and parameters on the morphology of the nanocomposite, the methods of characterization and the effects of adding nanoclay on the mechanical and physical properties of composite. The improvements in the liquid barrier properties brought about by the addition of nanoclay platelets to epoxy resin are discussed. The variation of physical and mechanical properties with nanoclay type and content are reviewed along with the effects of moisture uptake on these properties. The advances in the development, characterization and applications of hybrid glass fibre reinforced epoxy–clay nanocomposites are discussed. Findings of the research work on the influence of nanoclay addition and exposure to water laden atmospheres on the behaviour of the hybrid glass fibre epoxy–nanoclay composites are presented. Finally, the potential health and environmental issues related to nanomaterials and their hybrid composites are reviewed.

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Liquid composite moulding of fibre nanocomposites

Cited by 10 publications

References 23 publications

Processability studies of silica‐thermoset polymer matrix nanocomposites

Processability studies of silica‐thermoset polymer matrix nanocomposites

Electromagnetic wave absorption and structural properties of wide-band absorber made of graphene-printed glass-fibre composite

Mechanical and Moisture Barrier Properties of Epoxy–Nanoclay and Hybrid Epoxy–Nanoclay Glass Fibre Composites: A Review

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