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  • Hindawi Limited  (3)
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  • Hindawi Limited  (3)
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  • 1
    Online Resource
    Online Resource
    Hindawi Limited ; 2013
    In:  Journal of Nanoparticles Vol. 2013 ( 2013-01-08), p. 1-5
    In: Journal of Nanoparticles, Hindawi Limited, Vol. 2013 ( 2013-01-08), p. 1-5
    Abstract: The research about the preparation of submicron inorganic particles, once conducted in the past decade, is now leading to prepare polymer matrix composite (PMC) reinforced with nanofillers. The objective of present research is to study the modified effects of reinforcement dispersion of nanoparticle silica in epoxy resin on the physical properties, mechanical and thermal behaviour, and the microstructure of resultant composites. Stirrer mixing associated with manual mixing of silica sand nanoparticles (developed in our earlier research) (Ahmad and Mamat, 2012) into epoxy was followed by curing being the adopted technique to develop the subject nanocomposites. Experimental values showed that 15 wt.% addition of silica sand nanoparticles improves Young’s modulus of the composites; however, a reduction in tensile strength was also observed. Number of holes and cavities produced due to improper mixing turn out to be the main cause of effected mechanical properties. Addition of silica sand nanoparticles causes a reduction in degree of crystallinity of the nanocomposites as being observed in differential scanning calorimetry (DSC) analysis.
    Type of Medium: Online Resource
    ISSN: 2314-484X , 2314-4858
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2013
    detail.hit.zdb_id: 2779373-4
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  • 2
    Online Resource
    Online Resource
    Hindawi Limited ; 2014
    In:  Chinese Journal of Engineering Vol. 2014 ( 2014-02-26), p. 1-4
    In: Chinese Journal of Engineering, Hindawi Limited, Vol. 2014 ( 2014-02-26), p. 1-4
    Abstract: Experiments are designed using Taguchi method to find the optimum parameters for silica sand nanoparticles production using low speed ball milling. Orthogonal array and signal-to-noise ratio are applied to study performance characteristics of machining parameters which are the ball to powder weight ratio, volume of milling jar, and rotation speed. Results obtained from signal-to-noise ratio analysis showed that ball to powder weight ratio is the most influential parameter.
    Type of Medium: Online Resource
    ISSN: 2314-8063
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2014
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  • 3
    Online Resource
    Online Resource
    Hindawi Limited ; 2015
    In:  Journal of Nanomaterials Vol. 2015 ( 2015), p. 1-8
    In: Journal of Nanomaterials, Hindawi Limited, Vol. 2015 ( 2015), p. 1-8
    Abstract: The single-walled zirconia nanotube is structurally modeled and its Young’s modulus is valued by using the finite element approach. The nanotube was assumed to be a frame-like structure with bonds between atoms regarded as beam elements. The properties of the beam required for input into the finite element analysis were computed by connecting energy equivalence between molecular and continuum mechanics. Simulation was conducted by applying axial tensile strain on one end of the nanotube while the other end was fixed and the corresponding reaction force recorded to compute Young’s modulus. It was found out that Young’s modulus of zirconia nanotubes is significantly affected by some geometrical parameters such as chirality, diameter, thickness, and length. The obtained values of Young’s modulus for a certain range of diameters are in agreement with what was obtained in the few experiments that have been conducted so far. This study was conducted on the cubic phase of zirconia having armchair and zigzag configuration. The optimal diameter and thickness were obtained, which will assist in designing and fabricating bulk nanostructured components containing zirconia nanotubes for various applications.
    Type of Medium: Online Resource
    ISSN: 1687-4110 , 1687-4129
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2015
    detail.hit.zdb_id: 2229480-6
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