Tensile Properties of Nanosilica/Epoxy Nanocomposites

Jumahat, Aidah; Soutis, C.; Abdullah, Sukarnur Che; Kasolang, Salmiah

doi:10.1016/j.proeng.2012.07.361

Cited by 63 publications

(43 citation statements)

References 6 publications

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“…8 and 9, respectively. Figure 8 shows the XRD patterns of uncalcined nanoclay and those calcined at 7508C for 2 h. XRD patterns of nanoclay show wide diffraction peaks which refer to Montmorillonite[(Ca, Na)0.3Al 2 (Si, Al) 4 Results of XRD clearly show the transformation of crystalline phases of nanoclay to amorphous phases because of calcination [47]. Figure 9a and b show XRD patterns of irradiated samples at 30 and 50 kGy, respectively.…”

Section: Dsc Analysismentioning

confidence: 99%

Physico‐mechanical properties of gamma‐irradiated clay/polyester nanocomposites

2017

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In this study both uncalcined and calcined nanoclays (NC) were used as reinforcements for unsaturated polyester resin (UP).The nanoclay/unsaturated polyester composites (NC‐UP) were produced at various nanoclay contents (0, 3, 5, and 10 wt%) under the effect of two different doses of gamma rays 30 and 50 kGy. The mechanical and thermal properties of NC‐UP composites were studied. The compressive strength values of (NC‐UP) composites were found to increase with increasing the nanoclay content up to 5 wt%. Above 5 wt% of nanoclay, the compressive strength was decreased for the two different irradiation doses. Thermogravimetric analysis was carried out to determine the thermal stability and activation energy of the unsaturated polyester resin and its composites. The results also showed an enhancement in the thermal behavior of the composites with increasing nanoclay content. At a dose of 50 kGy, the addition of 5% nanoclay to unsaturated polyester increases the activation energy from 77 to 110 and 91 kJ/mol for uncalcined and calcined clay, respectively. The dispersion of nanoclay particles in polyester matrix was observed by scanning electron microscopy. The results clearly showed that, the calcination of the nanoclay content caused a desired effect on the final properties of NC‐UP composites as compared to the uncalcined nanocaly. The utilization of a higher gammairradiation dose (50 kGy) showed a good improvement in the thermal and mechanical properties as compared to the specimens irradiated at a dose of 30 kGy. The results are also confirmed by X‐ray diffraction analysis. POLYM. COMPOS., 39:3666–3675, 2018. © 2017 Society of Plastics Engineers

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Section: Dsc Analysismentioning

confidence: 99%

Physico‐mechanical properties of gamma‐irradiated clay/polyester nanocomposites

2017

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“…The elastic properties of resin (Epoxy resin Epikote 828) are obtained from Reference [13]. The plastic deformation and failure data of Epikote 828 are obtained from References [23,24]. In summary, the matrix properties utilized in this paper are presented in Table 2.…”

Section: Elastic-plastic Materials Model For Epoxy Resinmentioning

confidence: 99%

Estimation of Lamina Stiffness and Strength of Quadriaxial Non-Crimp Fabric Composites Based on Semi-Laminar Considerations

et al. 2016

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Quadriaxial non-crimp fabric (QNCF) composites are increasingly being used as primary structural materials in aircraft and automotive applications. Predicting the mechanical properties of QNCF lamina is more complicated compared with that of unidirectional (UD) composites, because of the knitting connection of different plies. In this study, to analyze the stiffness and strength of the QNCF composites, a novel modeling strategy for the meso-scale features is presented based on the semi-laminar assumption. Following the view of the mechanical properties of single composite lamina, the complex QNCF layer is decomposed into individual plies. Three different representative unit cells along fiber direction are selected to predict the mechanical performance of QNCF, including in-plane stiffness, damage initiation, and stiffness degradation. To validate the developed modeling strategy, the predictions are compared with existing experimental results, where a good agreement is presented on the prediction of in-plane stiffness and strength. Furthermore, the effect of in-plane fiber distortion, induced by the stitching yarn on the mechanical properties, is studied.

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“…Epoxy polymers are classified as a brittle material because these materials usually fail in tension at relatively low values of strain [8]. As mentioned before, tensile test is conducted to measure the force required to break a polymer composite specimen and the extent to which the specimen stretches or elongates to that breaking point.…”

Section: 1mentioning

confidence: 99%