The influence of processing techniques on the matrix distribution and filtration of clay in a fibre reinforced nanocomposite

Nuhiji, Betime; Attard, Darren; Deveth, August; Bungur, Jenny; Fox, Bronwyn

doi:10.1016/j.compositesb.2015.08.067

Cited by 14 publications

(13 citation statements)

References 30 publications

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“…The enthalpy of reaction of as-received Cycom 5320-1 prepreg was 181 J/g. The panels cured using each tool were tested at a number of locations across the part to evaluate their DOC (Figure 7a for regions [1][2][3][4][5][6]). These locations refe FOT thermocouples were placed so that representative data could be attained.…”

Section: Differential Scanning Calorimetrymentioning

confidence: 99%

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Tooling materials compatible with carbon fibre composites in a microwave environment

Nuhiji

Swait

Bower

et al. 2019

Composites Part B: Engineering

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Although metals are the most commonly used tooling materials to cure composites, they do not provide optimal results in a microwave environment. Following a selection process based on the properties of the materials, an alternative tooling material in carbon fibre reinforced plastic (CFRP) was successfully utilised to cure CFRP panels in laboratory and industrial microwaves. The conductive carbon fibres in the tool facilitated the fast heat transfer across the part. Other tooling materials including a glass fibre cyanate ester prepreg and tooling board were trialled, although the latter exhibited damage during cure. These advantages demonstrate that the CFRP tool is a compatible material that can be used when microwave curing composites.

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Section: Differential Scanning Calorimetrymentioning

confidence: 99%

“…The long processing times and low efficiency of autoclaves can in turn lead to bottlenecks in production. As the demand for composite structures increases, there is a requirement to develop reliable high-rate manufacturing technologies [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

Tooling materials compatible with carbon fibre composites in a microwave environment

Nuhiji

Swait

Bower

et al. 2019

Composites Part B: Engineering

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“…High temperature during premixing of clay reduces the viscosity of epoxy resin and facilitates the diffusion of monomer molecules in interlayer spaces of clay minerals and promotes better dispersion of clay minerals in matrix. 11,13,17,23 The representative tensile stress versus percent elongation curves of all nanocomposites are shown in the online Appendix The increase in percent elongation at break and tensile strength can be attributed to a fine dispersion of clay minerals and adequate bonding between clay mineral layers and matrix of fiber reinforced composite. It would be pertinent to mention that the use of high temperature during premixing would limit the applicability of this method for mass production of large fiber reinforced parts due to difficulty in uniform heating and long times required to heat and cool large quantities of resin.…”

Section: Effect Of Speed and Temperature During Mixing And Ultrasonicmentioning

confidence: 99%

“…Nuhiji et al 11 concluded that a rapid heating rate during curing lowered the viscosity of nanofillerepoxy resin mixture and facilitated the penetration of polymer chains in clay interlayer space as well as promote adhesion between epoxy and fibers. The use of Quickstep TM process during curing of laminates significantly reduced the agglomeration of clay minerals in fiber preforms and imparted better mechanical properties to fiber reinforced composites.…”

Section: Introductionmentioning

confidence: 99%

Effect of mixing parameters, postcuring, and stoichiometry on mechanical properties of fiber reinforced epoxy–clay nanocomposites

Sharma

Chhibber

Mehta

2018

Proceedings of the Institution of Mechanical Engineers, Part L:

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The influence of processing variables was experimentally studied for glass fiber reinforced epoxy–clay nanocomposites manufactured using vacuum-assisted wet layup method. The tensile strength, flexural strength, and interlaminar shear strength of these nanocomposites were significantly influenced by the processing variables including the temperature of resin–clay mixture, speed of homogenization, and ultrasonic probe amplitude during premixing of clay minerals in epoxy. The glass transition temperature of glass fiber reinforced composites increased with incorporation of clay minerals in epoxy. Also, the postcuring of the laminates was carried out at three different temperatures, e.g. 100, 130, and 150 ℃ for 3 h. A decrease in tensile modulus, tensile strength, and flexural strength of nanocomposites postcured at 130 and 150 ℃ was observed. Also, the use of non-stoichiometric epoxy resin and hardener ratios had an adverse effect on mechanical properties of fiber reinforced epoxy–clay nanocomposites. In fiber reinforced composites incorporating clay minerals, a uniform dispersion of clay minerals besides a strong interfacial adhesion between clay minerals and polymer and optimum conditions of curing of matrix is a crucial aspect for improved performance over conventional fiber reinforced composites.

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“…Due to cross-linking reaction, change in mechanical parameters with respect to temperature yields valuable information about the cure state [20][21][22][23]. Several researchers have reported the efficacy of DMTA for the detection of glass transition temperature and the cure state [24][25][26][27].…”

Section: Dmta Analysismentioning

confidence: 99%

Aerospace composite cured by quickstep and autoclave processing techniques: Evaluation and comparison of reaction progress

Day

Khan

Kausar

2017

Aerospace Science and Technology

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. curing path for 977-2A resin was different than the autoclave curing; however the final cross-linked structure was similar to that of autoclave cured samples. Aerospace Composite Cured by Quickstep and Autoclave Processing Techniques: Evaluation and Comparison of Reaction Progress

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The influence of processing techniques on the matrix distribution and filtration of clay in a fibre reinforced nanocomposite

Cited by 14 publications

References 30 publications

Tooling materials compatible with carbon fibre composites in a microwave environment

Tooling materials compatible with carbon fibre composites in a microwave environment

Effect of mixing parameters, postcuring, and stoichiometry on mechanical properties of fiber reinforced epoxy–clay nanocomposites

Aerospace composite cured by quickstep and autoclave processing techniques: Evaluation and comparison of reaction progress

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