Effect of weathering on physical and mechanical properties of hybrid nanocomposite based on polyethylene, woodflour and nanoclay

Eshraghi, Amir; Khademieslam, Habibollah; Ghasemi, Ismaeil

doi:10.4067/s0718-221x2016005000054

Cited by 8 publications

(9 citation statements)

References 22 publications

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“…The composite modulus is often a property of particular interest (Punyamurthy et al 2014, AlMaadeed et al 2014b. The improvement in composite modulus is an expected outcome because the reinforcement effect caused by the wood flour addition (Eshraghi et al 2016). It is clearly seen that the composite modulus increased with the wood flour loading.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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Mechanical, dynamic mechanical and morphological properties of composites based on recycled polystyrene filled with wood flour wastes

Poletto

2017

Maderas, Cienc. tecnol.

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In this work, the potential for usage recycled polystyrene and wood flour wastes as materials for development wood plastic composites was evaluated. The effects of wood flour loading and coupling agent addition on the mechanical, dynamic mechanical and morphological properties of polystyrene wood flour composites were examined. The results showed that the mechanical properties decreased with the wood flour loading. However, an improvement in composite compatibility was observed when the coupling agent was used resulting in the increase of mechanical and dynamic mechanical properties. A morphological study demonstrates the positive effect in the interfacial adhesion between filler and matrix caused by the coupling agent addition. Based on the findings of this work, both waste materials can be used for development composites with higher performance.

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Section: Mechanical Propertiesmentioning

confidence: 99%

“…In addition, they have been widely used as automotive parts, building applications and consumer products (Hong et al 2014, Eshraghi et al 2016, Tufan et al 2016, Teuber et al 2016. However, most thermoplastics are hydrophobic while wood flour is hydrophilic.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, dynamic mechanical and morphological properties of composites based on recycled polystyrene filled with wood flour wastes

Poletto

2017

Maderas, Cienc. tecnol.

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“…The water content M(t) absorbed by each specimen was then calculated as the mass gain percent relative to its initial weight ( w 0 ) as follows:

M ((),, t) = ((),, \frac{w_{t} - w_{0}}{w_{0}}) \times 100

where w t is the sample weight after time t. Specimens were immersed up to 120 days in water.…”

Section: Experimental Workmentioning

confidence: 99%

“…Also, results showed that weathering decreased modulus of elasticity values; however, good dispersion of nanoclay layers resulted in slight drop of modulus of elasticity values. Likewise, Chang studied the effects of nano‐silica addition on water uptake of glass fiber/epoxy composites . Nano‐silica addition was found to reduce the sample water uptake when compared with that of unfilled glass fiber/epoxy composite specimens.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of water barrier properties and tribological performance of hybrid glass fiber/epoxy composites with inclusions of carbon and silica nanoparticles

Agwa

Megahed

2017

Polym. Adv. Technol.

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Water barrier properties and tribological performance (hardness and wear behavior) of new hybrid nanocomposites under dry and wet conditions were investigated. The new fabricated hybrid nanocomposite laminates consist of epoxy reinforced with woven and nonwoven tissue glass fibers and two different types of nanoparticles, silica (SiO 2 ) and carbon black nanoparticles (C). These nanoparticles were incorporated into epoxy resin as a single nanoparticle (either SiO 2 or C) or combining SiO 2 and C nanoparticles simultaneously with different weight fractions. The results showed that addition of carbon nanoparticles with 0.5 and 1 wt% resulted in maximum reduction in water uptake by 28.55% and 21.66%, respectively, as compared with neat glass fiber reinforced epoxy composites. Addition of all studied types and contents of nanoparticles improves hardness in dry and wet conditions over unfilled fiber composites. Under dry conditions, maximum reduction of 47.26% in weight loss was obtained with specimens containing 1 wt% carbon nanoparticles; however, in wet conditions, weight loss was reduced by 17.525% for specimens containing 0.5 wt% carbon nanoparticles as compared with unfilled fiber composites. Diffusion coefficients for different types of the hybrid nanocomposites were computed using Fickian and Langmuir models of diffusion.

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“…Overall, the flexural modulus reduced by about 10 % with respect to the initial values after one year of weathering. Eshraghi et al (2016) also observed about 10 % decline in flexural modulus of HDPE-wood composites after 2000 h of artificial weathering. It was observed that the loss in flexural modulus in the composites containing smaller wood particle size (Mesh size -100) was relatively lesser as compared to other two wood particle sizes.…”

Section: Effect Of Natural Weathering On Mechanical Properties Of Wpcsmentioning

confidence: 71%

Changes in colour and mechanical properties of wood polypropylene composites on natural weathering

Gunjal

Aggarwal

Chauhan

2020

Maderas, Cienc. tecnol.

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This comparative study focused on understanding the effect of coupling agent and particle size on weathering behaviour of wood polypropylene composite. Two coupling agents, namely maleic anhydride grafted polypropylene and m-TMI (m-Isopropenyl-α,α− dimethylbenzyl isocyanate) grafted polypropylene were used in preparation of the composites. The composites were exposed to outdoor conditions for one year and changes in surface colour and mechanical properties were measured after 2, 4, 8 and 12 months of natural weathering. During the initial four months of weathering considerable colour change was observed with increase in lightness. Mechanical properties were unaffected largely for the initial four months and thereafter started declining. Overall, tensile strength decreased by about 15 % and flexural strength decreased by about 8 % after one year of weathering. The flexural modulus also decreased by about 10 %. Wood particle size was found to affect the aesthetic and strength of the composites after natural weathering. Coupling agents had a positive impact on mechanical properties however their influence on weathering degradation was not noticeable.

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Effect of weathering on physical and mechanical properties of hybrid nanocomposite based on polyethylene, woodflour and nanoclay

Cited by 8 publications

References 22 publications

Mechanical, dynamic mechanical and morphological properties of composites based on recycled polystyrene filled with wood flour wastes

Mechanical, dynamic mechanical and morphological properties of composites based on recycled polystyrene filled with wood flour wastes

Enhancement of water barrier properties and tribological performance of hybrid glass fiber/epoxy composites with inclusions of carbon and silica nanoparticles

Changes in colour and mechanical properties of wood polypropylene composites on natural weathering

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