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Akash Mohanty

Bio: Akash Mohanty is an academic researcher from VIT University. The author has contributed to research in topics: Epoxy & Graphene. The author has an hindex of 6, co-authored 26 publications receiving 182 citations. Previous affiliations of Akash Mohanty include Indian Institutes of Technology & Indian Institute of Technology Kanpur.

Papers
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TL;DR: In this article, it was found that at low concentration alumina nanoparticles exhibit uniform dispersion in epoxy nanocomposite while at higher concentration they depict aggregation of alumina particle.

62 citations

Journal ArticleDOI
TL;DR: In this article, the tensile strength and elastic modulus of the alumina nanoparticles, glass fiber, and carbon fiber reinforced epoxy composites were investigated, and the results showed that the longitudinal modulus has significantly improved because of the filler additions.
Abstract: This research work investigates the tensile strength and elastic modulus of the alumina nanoparticles, glass fiber, and carbon fiber reinforced epoxy composites. The first type composites were made by adding 1–5 wt % (in the interval of 1%) of alumina to the epoxy matrix, whereas the second and third categories of composites were made by adding 1–5 wt % short glass, carbon fibers to the matrix. A fourth type of composite has also been synthesized by incorporating both alumina particles (2 wt %) and fibers to the epoxy. Results showed that the longitudinal modulus has significantly improved because of the filler additions. Both tensile strength and modulus are further better for hybrid composites consisting both alumina particles and glass fibers or carbon fibers. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 39749.

43 citations

Journal ArticleDOI
TL;DR: In this article, the nano-scale dispersion is achieved at an optimum concentration of alumina particles (2 wt), which results in improved thermal stability, impact strength, flexural modulus and flexural strength of composites.
Abstract: Nano scale dispersion due to the size transformation of the reinforced particles from micron size to nano size in the polymer matrix to enhance the mechanical properties of fiber-reinforced hybrid composite is an interesting research topic of the current time. In this study, the nanocomposites test coupons were prepared through the open molding route. The nano scale dispersion is achieved at an optimum concentration of alumina particles (2 wt%), which results in improved thermal stability, impact strength, flexural modulus and flexural strength of composites. The maximum enhancement in impact energy was observed to be 84 % correspond to the addition of 2 wt%, 20 % for the flexural strength correspond to the addition of 3 wt% and 35 % for the flexural modulus correspond to the addition of 5 wt% alumina particles to the epoxy matrix. For the addition of 5 wt% of short glass/carbon fibers to the epoxy, an improvement of 130 % and 170 % for the flexural strength and 55 % and 95 % for the flexural modulus was observed. Furthermore, addition of optimum concentration (i.e. 2 wt%) of alumina nano particle to the 5 wt% glass/carbon fiber reinforced hybrid composites resulted in the improvement of impact properties, flexural strength and flexural modulus of 175 %, 195 %; 18 %, 26 % and 65 %, 85 % as compared to the neat epoxy, and 7 %, 8 %; 82 %, 105 % and 17 %, 5 % as compared to the short fiber reinforced composites. These enhancements in the mechanical properties are mainly due to the better stress transfer properties from fiber and nanoparticle to the matrix, due to the existence of strong interfacial interactions between both epoxy/alumina nanoparticles, which depict the higher resistance to fiber pull out as compare to fiber reinforced composites without alumina nanoparticles.

38 citations

Journal ArticleDOI
TL;DR: In this article, the microhardness properties of the neat epoxy, alumina nanoparticles, and alumina-embedded glass/carbon fiber-reinforced hybrid composites were determined.
Abstract: This article discusses the mechanical performance of alumina nanoparticles and randomly distributed short glass/carbon fiber-reinforced hybrid composites through microhardness and wear test. The open mold casting method was adapted to prepare the test coupons. The wear and friction behavior of composites sliding against hardened ground EN 32 steel in a pin-on-disc configuration is evaluated on a wear and friction tester. The microhardness properties of the neat epoxy, alumina nanoparticles, and alumina nanoparticle–embedded glass/carbon fiber–reinforced hybrid composites were determined. The morphology of the worn composites was analyzed with a scanning electron microscope. It was found that the particles as fillers contributed significantly to improve the mechanical properties and wear resistance of the polymer composites. This is because the fillers contributed to enhance the bonding strength between the fiber and the epoxy resin. Moreover, the wear and friction resistance of the glass/carbon fiber comp...

23 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of carbon nanotubes on the curing behavior of epoxy polymer in the presence of multi-wall carbon-nanotubes was investigated. But the authors focused on the modification of the curing behaviour of the epoxy polyurethane polymer and only three weight ratio configurations were considered (0.1, 0.5, and 1.0 wt%) to investigate the nano-enrichment effect.
Abstract: The processing of carbon nanotube based nanocomposites is one of the fastest growing areas in materials research due to the potential of significantly changing material properties even at low carbon nanotube concentrations. The aim of our work is to study the curing and thermomechanical behavior of carbon nanotubeepoxy nanocomposites that are critical from an application standpoint. Multiwall carbon nanotubes–epoxy composites are prepared by solvent evaporation based on a commercially available epoxy system and functionalized multiwalled carbon nanotubes. Three weight ratio configurations are considered (0.1, 0.5, and 1.0 wt%) and compared to both the neat epoxy to investigate the nano-enrichment effect. We focus here on the modification of the curing behavior of the epoxy polymer in the presence of carbon nanotubes. It has been observed that introducing the multiwall carbon nanotubes delays the polymerization process as revealed by the modification of the activation energy obtained by differential scanning calorimetry. The viscoelastic response of the nanocomposites was studied from the measurements of storage modulus and the loss factor using dynamic mechanical analysis to evaluate the effect of the interface in each matrix=carbon nanotube system with changing matrix mobility. These measurements provide indications about the increase in the storage modulus of the composites, shift in the glass transition temperature due to the restriction of polymer chain movement by carbon nanotubes. POLYM. COMPOS., 00:000–000, 2013. V C 2013 Society of Plastics Engineers

15 citations


Cited by
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TL;DR: The state-of-the-art multifunctional epoxy nanocomposites with magnetic, electrically conductive, thermally conductive and flame retardant properties of the past few years are reviewed in this article.
Abstract: Epoxy is a crucial engineered thermosetting polymer with wide industrial applications in adhesive, electronics, aerospace and marine systems In this review, basic knowledge of epoxy resins and the challenge for the preparation of epoxy nanocomposites are summarized The state-of-art multifunctional epoxy nanocomposites with magnetic, electrically conductive, thermally conductive, and flame retardant properties of the past few years are critically reviewed with detailed examples The applications of epoxy nanocomposites in aerospace, automotives, anti-corrosive coatings, and high voltage fields are briefly summarized This knowledge will have great impact on the field and will facilitate researchers in seeking new functions and applications of epoxy resins in the future

344 citations

Journal ArticleDOI
TL;DR: In this article, two halogen-free flame retardants (DP-DDE and DP-DDS) were synthesized via a one-pot procedure based on the Pudovik reactions between 9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO) and imines directly resulting from the condensation reactions of 3-methoxy-4-hydroxybenzaldehyde with two typical curing agents, 4,4′-oxydianiline (DDE) and 4

104 citations

Journal ArticleDOI
TL;DR: In this paper, the influence of basalt powder addition on thermomechanical properties of reinforced epoxy composites was investigated by means of static tensile test and Charpy impact strength method.
Abstract: The influence of basalt powder addition on thermomechanical properties of basalt fiber reinforced epoxy composites was investigated in this study. The dynamic mechanical thermal analysis was carried out in a torsion mode. The mechanical properties were evaluated by means of static tensile test and Charpy impact strength method. The thermal stability was investigated by thermogravimetric analyses in inert and oxidizing atmospheres. Results showed that combining basalt fibers with basalt powder improves stiffness and thermal resistance of the epoxy composites. The new hybrid composites are more resistant to temperature changes than the reference sample as proven by dynamic mechanical thermal analysis.

84 citations

Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper proposed a sand-based cemented paste backfill material (SCPB) with widely distributed and low-cost Yellow River sand as the filling aggregate with cement and fly ash as the binders based on the mining conditions of the Zhaoguan Coal Mine located in the Shandong province of China.

71 citations

Journal ArticleDOI
TL;DR: In this article, the effects of using nanometer and micrometer-sized aluminum particles in glass fiber reinforcement epoxy composites have been studied, and the study evaluates the mechanical proper tie...
Abstract: In this article, the effects of using nanometer and micrometer-sized aluminum particles in glass fiber reinforcement epoxy composites have been studied. The study evaluates the mechanical propertie...

61 citations