Accelerated ageing due to moisture absorption of thermally cured epoxy resin/polyethersulphone blends. Thermal, mechanical and morphological behaviour

Alessi, Sabina; Conduruta, D.; Pitarresi, Giuseppe; Dispenza, Clelia; Spadaro, Giuseppe

doi:10.1016/j.polymdegradstab.2010.12.027

Cited by 76 publications

(46 citation statements)

References 18 publications

(12 reference statements)

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“…Water diffusion can influence structural properties of the material such as its T g , which generally decreases with water uptake, and fracture toughness [7,8]. These changes are primarily associated to a plasticization of the material as extensively reported in the literature [1,8e12].…”

Section: Introductionmentioning

confidence: 97%

Water diffusion and swelling stresses in highly crosslinked epoxy matrices

Toscano

Pitarresi

Scafidi

et al. 2016

Polymer Degradation and Stability

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Section: Introductionmentioning

confidence: 97%

Water diffusion and swelling stresses in highly crosslinked epoxy matrices

Toscano

Pitarresi

Scafidi

et al. 2016

Polymer Degradation and Stability

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“…3a, b, Tg decreases from 76.2 to 68.5°C for neat epoxy composite. Decreasing of the glass transition temperature and modulus, and increasing of damping could be related to plasticization by water and wider distributions of molecular weights of composite during environmental exposure especially at the elevated temperature [3,9,26]. As the temperature increases, water penetrated into the cross-linked domain (less plasticized phase) where water hardly penetrated at room temperature aging.…”

Section: The Influence Of Hydrothermal Ageing On Dynamic Mechanical Amentioning

confidence: 99%

“…Moreover, they are the most extensively used advanced composite materials in aerospace and advanced automotive applications because of their excellent combination of mechanical properties and corrosion resistance, good adhesion, wetting properties, and dimensional stability with respect to their cost [3,4].…”

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confidence: 99%

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The effects of water absorption and surface treatment on mechanical properties of epoxy nanocomposite using response surface methodology

et al. 2013

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In this study, the dynamic-mechanical properties of fumed silica and silane-treated reinforced epoxy nano-composites were examined; silane-treated specimens demonstrated greater glass transition temperature, modulus, and less moisture absorption. An epoxy composite has been studied under hydrothermal ageing in order to investigate the effect of treatment on dynamical mechanical thermal analysis. The nanocomposites were kept in seawater up to 600 h. The process was then modeled using response surface methodology based on central composite design (CCD). Three models were developed to predict the influence of wet aging parameters on the Tg, modulus, and damping. Accuracy of predicted results was analyzed by the analysis of variance method. The optimum values predicted by the RSM and CCD were 1 % wt treated fumed silica followed by aging at 60°C. Multiple correlation coefficients (R 2 ) of 0.96 were obtained from the regression models for Tg, confirming the good accuracy of developed models.

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“…In recent years, high-performance thermoplastics have been used to modify thermosetting resins such as PES, PEI, PEEK, ABS, etc., because of their high modulus and glass transition temperatures [8,9,11,20]. The incorporation of thermoplastics, initially miscible in epoxy resin and creating second phase during the epoxy-hardener curing reaction, leads to toughness improved polymer networks.…”

Section: Introductionmentioning

confidence: 99%

Viscoelastic properties and morphology of dicyanate ester/epoxy co-polymers modified with polysiloxane and butadiene–acrylonitrile rubbers

Szeluga

Moryc

2013

J Therm Anal Calorim

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Dynamic mechanical analysis was conducted on specimens prepared from cyanate ester (CE) and epoxy (EP) resins cured together at various mass compositions. Increase of amount of epoxy resin in composition was shown to have a disadvantageous effect on glass transition temperature (T g ). It was shown that post-curing procedure was needed to produce a polymer matrix with a single glass transition relaxation, but increase in post-cure temperature up to 250°C resulted in slight reduction in T g for epoxy/ cyanate copolymers. TG results proved that the presence of epoxy resin reduces thermal stability of the cyanate/epoxy materials. The neat CE and EP/CE systems containing 30 wt% of epoxy resin were modified using epoxy-terminated butadiene-acrylonitrile rubber (ETBN) and polysiloxane core-shell elastomer (PS). The scanning electron microscopy (SEM) results showed the existence of second phase of ETBN and PS modifiers. Only in the case of EP/ CE composition modified with ETBN, well-dispersed second phase domains were observed. Analysis of SEM images for other CE-and EP/CE-modified systems revealed the formation of spherical aggregates.

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Accelerated ageing due to moisture absorption of thermally cured epoxy resin/polyethersulphone blends. Thermal, mechanical and morphological behaviour

Cited by 76 publications

References 18 publications

Water diffusion and swelling stresses in highly crosslinked epoxy matrices

Water diffusion and swelling stresses in highly crosslinked epoxy matrices

The effects of water absorption and surface treatment on mechanical properties of epoxy nanocomposite using response surface methodology

Viscoelastic properties and morphology of dicyanate ester/epoxy co-polymers modified with polysiloxane and butadiene–acrylonitrile rubbers

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