Innovative application of ultrasonic mixing to produce homogeneously mixed nanoparticulate-epoxy composite of improved physical properties

Goyat, M.S.; Ray, Suprakas Sinha; Ghosh, Pallabi

doi:10.1016/j.compositesa.2011.06.006

Cited by 103 publications

(63 citation statements)

References 33 publications

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“…The measured T i of the nanocomposite prepared by the USM was the highest as 328. 8 C, whereas the one by the CM had the lowest value of 321.8 C. Almost similar trend was also identified for the PbO/epoxy system: namely, the T i value was the highest as 341. 3 C for the nanocomposite by the USM, but the nanocomposite by the CM showed the lowest T i of 334.…”

Section: Structure and Mechanical Strengthsupporting

confidence: 71%

Effects of ultrasonic irradiation on colloidal stability of B₄C and PbO particles and preparations of epoxy composites

Lee

et al. 2015

Polymer Composites

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The effects of the ultrasonic irradiation on the colloidal stability of B 4 C and PbO fillers suspended in lowviscosity hardener and the subsequent preparations of the epoxy composites were studied. The ultrasonic dispersion ensured a long-period colloidal stability of the filler particles with their initial particle size levels in liquid hardener. For less hard PbO microparticles, the particle size decreased with an increase in ultrasonication time by fragmentation. The effectiveness of ultrasonication was remarkable for the nanoparticles owing to the presence of greater surface area. FT-IR measurements revealed that a particle-to-hardener interaction became stronger. Virtually, this interaction was critical to yield both the homogeneous distribution and strong interface of the B 4 C and PbO particles in the epoxy matrices, resulting in the improved mechanical and thermal performances of the B 4 C/epoxy and PbO/ epoxy composites.

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Section: Structure and Mechanical Strengthsupporting

confidence: 71%

Effects of ultrasonic irradiation on colloidal stability of B₄C and PbO particles and preparations of epoxy composites

Lee

et al. 2015

Polymer Composites

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“…Average size of HCM and ECM was determined using well known image processing software image J [18] by randomly choosing at least 5 FESEM images. Fourier-transform infrared (FTIR) spectra of samples were recorded with PerkinElmer Spectrum 100 series equipment to identify the presence of functional groups and molecular architecture.…”

Section: Physical Characterizationmentioning

confidence: 99%

Influence of dual-component microcapsules on self-healing efficiency and performance of metal-epoxy composite-lap joints

Khan

Halder

Goyat

2016

The Journal of Adhesion

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Dual-component microcapsules were synthesized by solvent evaporation technique using epoxy resin and hardener as core materials and Polymethyl methacrylate (PMMA) as shell wall materials. Morphology, core content and size distribution of microcapsules were monitored by controlling the various processing parameters such as agitation speed, core-shell weight ratio and concentration of emulsifiers. The molecular structure, morphologies and thermal characteristics of the microcapsules were examined under Fourier Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscopy (FESEM) and Thermogravimetric Analysis (TGA) respectively. Synthesized dual-component microcapsules were entrenched into the epoxy polymer to introduce the healing features in single lap shear epoxy adhesive joints. Healing efficiency as high as 89% was achieved when 10 wt% dual-component microcapsules was introduced in adhesives. Investigation of the fractured surfaces of the healing enabled adhesives reveals presence of crack pinning and crack blunting sites represented by Downloaded by [Brown University Library] at 02:33 11 June 2016A c c e p t e d M a n u s c r i p t 2 characteristic tails at the wake of microcapsules in cohesive zone. Such failure mechanisms responsibly influence the healing efficiency.

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“…The IDT steadily increases with the increase of CNB content in epoxy. The increase of IDT is an indicative of homogeneous dispersion of CNB in epoxy matrix, which may act as obstacles to heat flow through the matrix [11]. The presence of CNB in the epoxy matrix may delay the predominant random chain scission of the epoxy matrix [28] and also results in the delay of the initial step of thermal degradation.…”

Section: Thermal Propertiesmentioning

confidence: 99%

“…After the UDMM process for 1 h, the MEK was removed under high vacuum of 1.33 Â 10 À4 to 1.33 Â 10 À5 bars for 2 h, and the well dispersed blend was cooled to room temperature (23 C). The removal of MEK was confirmed by following a method described in our earlier work [11]. Hardener was mixed in a stoichiometric ratio to the well dispersed blend.…”

Section: Solution-blended Cnb/epoxy Nanocompositesmentioning

confidence: 99%

Thermomechanical response and toughening mechanisms of a carbon nano bead reinforced epoxy composite

Goyat

Suresh

Bahl

et al. 2015

Materials Chemistry and Physics

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Innovative application of ultrasonic mixing to produce homogeneously mixed nanoparticulate-epoxy composite of improved physical properties

Cited by 103 publications

References 33 publications

Effects of ultrasonic irradiation on colloidal stability of B₄C and PbO particles and preparations of epoxy composites

Effects of ultrasonic irradiation on colloidal stability of B₄C and PbO particles and preparations of epoxy composites

Influence of dual-component microcapsules on self-healing efficiency and performance of metal-epoxy composite-lap joints

Thermomechanical response and toughening mechanisms of a carbon nano bead reinforced epoxy composite

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Innovative application of ultrasonic mixing to produce homogeneously mixed nanoparticulate-epoxy composite of improved physical properties

Cited by 103 publications

References 33 publications

Effects of ultrasonic irradiation on colloidal stability of B4C and PbO particles and preparations of epoxy composites

Effects of ultrasonic irradiation on colloidal stability of B4C and PbO particles and preparations of epoxy composites

Influence of dual-component microcapsules on self-healing efficiency and performance of metal-epoxy composite-lap joints

Thermomechanical response and toughening mechanisms of a carbon nano bead reinforced epoxy composite

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Effects of ultrasonic irradiation on colloidal stability of B₄C and PbO particles and preparations of epoxy composites

Effects of ultrasonic irradiation on colloidal stability of B₄C and PbO particles and preparations of epoxy composites