Effect of the addition of modified mica on mechanical and durability properties of FRP composite materials for civil engineering

Robert, Mathieu; Cousin, Patrice; Fam, Amir; Benmokrane, Brahim

doi:10.1002/pc.21139

Cited by 11 publications

(8 citation statements)

References 27 publications

(24 reference statements)

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“…In these studies, functionalized NC decreases D by significantly increasing the water uptake since NC is highly hydrophilic, even with high NC and/or modified NC loading (up to 5 wt%). 48 Absorbed water leads to swelling, plasticization, and hydrolysis of the polymer matrix, affecting the durability of the polymer whereas GO prevents these phenomena without affecting the initial rate of diffusion or D at long time. 49…”

Section: Resultsmentioning

confidence: 99%

Effect of modified graphene oxide on the mechanical, thermal, and barrier properties of vinylester

Gauvin

Cousin

Robert

2018

Journal of Composite Materials

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Graphene, which is a one atom thick layer of graphite, has been considerably studied in the past decade due to its extraordinary physical properties. The development of new routes of synthesis facilitates the use of graphene in polymer nanocomposite. The addition of very small amounts (<1%) of graphene in a polymer matrix does not only increase its thermal and mechanical properties, but it would also enhance permeability, by limiting the diffusion of water through the material. Graphene-polymer nanocomposite would be an interesting alternative to conventional polymer nanocomposite such as nanoclay-polymer nanocomposite. In this study, graphene oxide is synthesized from graphite flakes, following the Tour method, and modified with silane to improve its compatibility with the polymer. Polymer nanocomposite made from vinylester resin and 0.5 wt% graphene oxide is prepared as well as other types of typically used polymer nanocomposite such as graphite flake, silica fume or nanoclay based composite. Samples are soaked in a water bath to study the water absorption of these nanocomposites. Mechanical property measurements and thermal analyses are performed to evaluate the benefit of using graphene oxide. Results show a significant enhancement of the mechanical and thermal properties with a graphene oxide content ten times lower than the one needed with conventional nanoparticles. Moreover, unlike nanoclay-based polymer nanocomposite, graphene oxide does not increase water absorption at saturation.

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Section: Resultsmentioning

confidence: 99%

Effect of modified graphene oxide on the mechanical, thermal, and barrier properties of vinylester

Gauvin

Cousin

Robert

2018

Journal of Composite Materials

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“…Over the years, GFRP based marine and civil structures have proven to be a suitable alternative to the conventional steel based structures, owing to their economic and environmental benefits. [1,2] Despite being increasingly used for both naval constructions and offshore and oceanographic purposes, the durability of such composites when exposed to different marine conditions is still a subject of research. GFRP composites when exposed to water, moisture, heat, and other hostile seawater environments have demonstrated physicochemical changes, which hamper their structural integrity, ultimately resulting in the deterioration of in-service performance and shortening of service-life.…”

Section: Introductionmentioning

confidence: 99%

Effects of seawater absorption and desorption on the long‐term creep performance of graphene oxide embedded glass fiber/epoxy composites

2020

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This study is primarily focused on analyzing the consequences of sea water absorption and desorption on the long-term durability of glass fiber/epoxy (GE) and 0.5 wt% graphene oxide (GO) dispersed glass fiber/epoxy (GO-GE) composites. Both GE and GO-GE composite specimens were initially exposed to natural seawater for a duration of 9 months. Desorption was also carried out for some of the seawater saturated samples. Before ageing, flexural test and dynamic mechanical analysis were carried out to understand the impact of GO incorporation on the characteristics of GE composite. Using gravimetric analysis, the seawater uptake kinetic curves were determined for both the composites. Long-term durability was assessed by performing stepwise isothermal creep and recovery tests in 30 C to 120 C temperature range and analysis of the results involved the use of time-temperature superposition principle for constructing the creep master isotherms in different conditions (before ageing or dry state, saturated state, and desorbed state).

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“…The enhancement of the mechanical properties was attributed to enhanced durability and chemical stability of the nanoparticles, and blocking of the alkaline solution penetration by the nanoparticles. Robert et al [24] investigated the effect of the addition of modified mica on FRP properties. They found that the addition of 3% of 3-aminopropyltriethoxysilane (APS)or octyldecylamine (ODA)-mica leaded to an increase of ∼25% of the ultimate tensile strength, and an increase of 27% and 29% of the tensile modulus of elasticity for APS-and ODA-mica, respectively.…”

Section: Introductionmentioning

confidence: 99%

Improving durability of glass fiber reinforced polymer composites by incorporation of ZnO/OMMT nanoparticles subjected to UV radiation and hygrothermal aging

Fang

Wang

et al. 2020

Mater. Res. Express

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Glass fiber reinforced polymer (GFRP) composites have high sensitivity to UV radiation, temperature, and moisture, and these factors lead to the decrease of mechanical properties. This study attempts to modify unsaturated polyester (UP) and vinylester (VE) resins with nano zinc oxide (ZnO) and organomontmorillonite (OMMT), in order to improve UV radiation resistance and hygrothermal resistance. The nano ZnO/OMMT modified UP and VE based GFRP composites were subjected to UV radiation and hygrothermal aging at 30°C, 50°C and 60°C (95% RH) for 90 days. Mass loss, moisture uptake, color change, flexural properties and short-beam-shear test were investigated. In comparison to unmodified GFRP specimens, ZnO/OMMT modifying decreased the mass loss, the color change, saturation moisture uptake, and the coefficient of diffusion. After exposure in UV radiation for 90 days, the flexural strength and interlaminar shear strength of nano modified GFRP composites increased by 23.5% and 27.8% compared with those of the unmodified GFRP composites. Nano ZnO/OMMT modifying also increased the flexural strength and interlaminar shear strength by 26.5% and 27.2% in hygrothermal condition at 60°C. Furthermore, based on the change of mechanical properties and Arrhenius rate model, a prediction model was proposed to predict the life of nano modified FRP composites.

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Effect of the addition of modified mica on mechanical and durability properties of FRP composite materials for civil engineering

Cited by 11 publications

References 27 publications

Effect of modified graphene oxide on the mechanical, thermal, and barrier properties of vinylester

Effect of modified graphene oxide on the mechanical, thermal, and barrier properties of vinylester

Effects of seawater absorption and desorption on the long‐term creep performance of graphene oxide embedded glass fiber/epoxy composites

Improving durability of glass fiber reinforced polymer composites by incorporation of ZnO/OMMT nanoparticles subjected to UV radiation and hygrothermal aging

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