Thermomechanical Behavior of High Performance Epoxy/Organoclay Nanocomposites

Leal, Artur S. C.; Araújo, Carlos José de; Lima, Antonio Gilson de; Silva, Suédina Maria Lima

doi:10.1155/2014/102695

Cited by 5 publications

(3 citation statements)

References 15 publications

(19 reference statements)

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“…Active composites or smart composites can be prepared with the incorporation of shape memory alloys into a composite with or without fiber reinforcement. Works like Castilho [13] and Leal et al [14] present the manufacture of these materials without fiber reinforcement and information about mechanical characterization. Other authors like Lei et al [15] and Lacasse et al [4] works with composite reinforced by SMA and fibers.…”

Section: Introductionmentioning

confidence: 99%

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Thermal Behaviour of Polymer Composite Reinforced with NiTi Shape Memory Alloys

Mota

Leal²,

Araújo

et al. 2017

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Shape memory alloys (SMA) are materials with metallic characteristic able to recover a geometric shape previously established under heat effect. This differentiated property, combined with the mechanical characteristic allows its use in many industrial situations. Active composites are produced with the polymeric matrix and wire of shape memory alloy, combining the elastic properties of the composite and characteristics of the phase transformation, martensite and austenite of SMA with memory alloy effect. The phase transformations that occur in the alloy are thermal processes, characterized by an increase in temperature during processing. The heat is transmitted for matrix, resulting in loss of mechanical properties of the composite. In this context, this paper aims to numerically analyze heat transfer in an epoxy resin polymer matrix incorporating Ni-Ti alloy wire with shape memory effect using ANSYS CFX software.

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Section: Introductionmentioning

confidence: 99%

“…Leal et al [14] evaluated the effect of the temperature in the epoxy matrix and the binary epoxy and organophilic clay composite. According to the authors, the increase of temperature affected the mechanical properties of these materials.…”

Section: Introductionmentioning

confidence: 99%

Thermal Behaviour of Polymer Composite Reinforced with NiTi Shape Memory Alloys

Mota

Leal²,

Araújo

et al. 2017

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“…Polymer nanocomposites are generally defined as the combination of polymer matrix and filler that have two phase systems in order for the continuous phase in an organic polymeric matrix and dispersed inorganic particles of nanometer scale [1,2]. The final properties of polymer nanocomposites depend strongly on the properties of the filler [3].…”

Section: Introductionmentioning

confidence: 99%

<strong>Using GO and clay to improve properties of PVA polymeric film </strong>

nasab

Sharif

Mazinani

2016

Proceedings of the 20th International Electronic Conference on Synthetic Organic Chemistry

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Abstract:In this study, we have used a combination of MMT and graphene oxide in poly vinyl alcohol polymer matrix preparation. Graphene oxide was synthesized using modified Hummers method and then aqueous suspension of graphene oxide and montmorillonite were added to polymer matrix. According to characterization of polymeric film, we observed excellent results. Our study shows addition of small amount of graphene oxide with nanoclay significantly enhances properties of poly vinyl alcohol hybrid nanocomposite, too.

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Deeper insights into the thermal properties of epoxy thermoset resins using torsion measurements

Smith

Lazzara

Fernando

2021

J of Applied Polymer Sci

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The glass transition temperature (T g ) of epoxy thermosets is a critical material property that depends on the component chemistry, the final cross-link density, and processing conditions. This study incorporates dynamic mechanical analysis (DMA) testing with a torsion clamp geometry on a TA Instruments DHR-2 and differential scanning calorimetry (DSC) to characterize five different two-component epoxy-amine systems. Investigation of the T g dependence on DMA frequency and heating shows that lowering the frequency from 1 to 0.01 Hz results in a T g very similar to that measured using DSC, while a heating rate of 0.3 C/min using DMA gives a T g comparable to the DSC measured value at 30 C/min. The DMA technique reveals secondary relaxation transitions and peak broadening in the tan(δ) plots of poorly mixed epoxy blends, quantified using full width at half maximum (FWHM) of tan(δ) peaks, and are indicative of a non-homogeneous cross-linked network and off-ratio blending, respectively. The increase in the FWHM due to poor mixing ranges from 8% to 96%. These parameters are easily measurable and quantifiable in DMA, but are not observed in DSC. The additional DMA insights are valuable for process development and failure analysis, and can improve the understanding of epoxies.

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Thermomechanical Behavior of High Performance Epoxy/Organoclay Nanocomposites

Cited by 5 publications

References 15 publications

Thermal Behaviour of Polymer Composite Reinforced with NiTi Shape Memory Alloys

Thermal Behaviour of Polymer Composite Reinforced with NiTi Shape Memory Alloys

<strong>Using GO and clay to improve properties of PVA polymeric film </strong>

Deeper insights into the thermal properties of epoxy thermoset resins using torsion measurements

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