Epoxy-silicate nanocomposites: Cure monitoring and characterization

Hussain, Farzana; Chen, Jihua; Hojjati, Mehdi

doi:10.1016/j.msea.2006.09.071

Cited by 76 publications

(74 citation statements)

References 37 publications

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“…The increase in ε could be attributed to the existence of metal oxides in the clay. 15,16 These oxides ELECTRICAL PROPERTIES OF IRRADIATED RUBBER-CLAY COMPOSITES are exhibited as dipoles inside the rubber matrix, which increase the dielectric constant. Comparing ε values of NBR samples with those of SBR samples, one can find that the polar rubber (NBR) has greater ε than that of the nonpolar rubber (SBR).…”

Section: Electrical Measurementsmentioning

confidence: 99%

“…It has been suggested that the electrical conductivity in the nanocomposites is due to the high ion transfer through inter-and intraregions of the silicate galleries. 15,16 Thus, the received electrical signal can be used for the investigation of the change in the clay dispersion in the host polymer during the mixing process, as reported by Ali et al 18 The dispersion of an electrically conductive particulate within an insulating host medium affects the overall performance of the heterogeneous system. 19 Furthermore, if the dispersed filler is in sufficient quantity, a conductive or semiconductive composite may be formed.…”

mentioning

confidence: 97%

“…Some authors have reported the appearance of a conductance signal in polymer-clay composites. [15][16][17] The conductivity in polymer-clay composites is ionic in nature. It has been suggested that the electrical conductivity in the nanocomposites is due to the high ion transfer through inter-and intraregions of the silicate galleries.…”

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confidence: 99%

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Electrical Properties of Irradiated Rubber‐Clay Composites Based on NBR and SBR

2012

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ABSTRACT:The electrical and thermal properties of gamma-irradiated rubber-clay composites based on acrylonitrile-butadiene rubber (NBR) and styrene-butadiene rubber (SBR) have been performed. The rubber-clay composites were prepared with different ratios of clay up to 50 phr using melt-mixing and hot-pressing methods. The produced sheets were exposed to gamma rays at dose levels in the range from 25 to 250 kGy. The chemical structure was studied by using FTIR technique, whereas thermal stability was tested using thermogravimetric analysis. Variations in the direct current (DC) conductivity (σ DC ) with both the clay ratio and irradiation dose were studied. The effect of the clay ratio and gamma irradiation on the dielectric constant (ε ) and loss (ε ) has also been investigated. The obtained results show that the thermal stability has been improved as a result of clay loading and gamma irradiation of the rubber samples. Moreover, a significant increase in the values of ε and ε with increasingCorrespondence to: Rasha M. Mohamed;

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Section: Electrical Measurementsmentioning

confidence: 99%

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confidence: 97%

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Electrical Properties of Irradiated Rubber‐Clay Composites Based on NBR and SBR

2012

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“…Depending on the matrix, NCs may be metallic (MNC), ceramic (CNC) or polymeric (PNC) materials. Since many important chemical and physical interactions are governed by surface properties, a nanostructured material could have substantially different properties from large dimensional material of the same composition (Hussain et al, 2007).…”

Section: Nano-compositesmentioning

confidence: 99%

Poly(Lactic Acid) as a Biopolymer-Based Nano-Composite

Al-Mulla¹,

Ibrahim²

2012

Products and Applications of Biopolymers

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“…The curing characteristics are studied by using differential scanning calorimetry (DSC) [15], dynamic mechanical analysis (DMA) [16], Rheology [17], and electrical measurements [18]. Chen and He [19] studied the curing behaviour of epoxy-clay nanocomposites using cure meter which measures torque during gelling with respect to time.…”

Section: Introductionmentioning

confidence: 99%

Study of Catalytic Effect of Nanolayered Montmorillonite Organoclays in Epoxy Polymer

Mohan

Kanny

2011

ISRN Nanotechnology

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This paper is about the study of catalytic effect of nanolayered montmorillonite-(MMT-) based organoclays (OCs) in epoxy polymer by directly monitoring their exothermic temperature versus time during curing. Untreated clays (UCs) of MMT were also filled in the epoxy polymer for comparative study. OCs and UCs were individually filled in epoxy polymer from 0 wt.% to 5 wt.%, and the curing characteristics were examined. The cure behavior of epoxy-OC composites changes as a function of OC concentration. Among the epoxy-OC systems, improved curing reaction was observed at 3 wt.% OC-filled epoxy composites. Addition of OC above 3 wt.% in epoxy reduces its catalytic effect due to presence of two types of cross-linking, namely, intergallery and extragallery cross-linking reactions. The curing behaviours of epoxy-UC composites were almost similar to those of pure epoxy polymer, and hence the results suggest that UC does not act as catalyst in epoxy polymer. The cured composite series was examined by studying their structure and morphology using X-ray diffraction (XRD), transmission electron microscopy (TEM) analysis, and the Fourier transform infrared (FTIR) spectroscopy.

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Epoxy-silicate nanocomposites: Cure monitoring and characterization

Cited by 76 publications

References 37 publications

Electrical Properties of Irradiated Rubber‐Clay Composites Based on NBR and SBR

Electrical Properties of Irradiated Rubber‐Clay Composites Based on NBR and SBR

Poly(Lactic Acid) as a Biopolymer-Based Nano-Composite

Study of Catalytic Effect of Nanolayered Montmorillonite Organoclays in Epoxy Polymer

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