Thermal and Mechanical Behavior of Wood Plastic Composites by Addition of Graphene Nanoplatelets

Zhang, Xingli; Zhang, Jinglan; Wang, Ruihong

doi:10.3390/polym11081365

Cited by 18 publications

(12 citation statements)

References 26 publications

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“…Referring to Rajan et al [59], samples with 15 wt.% graphene increased the thermal conductivity by 135%, although, as emphasised by the authors, the absolute values were still well below 1 W/mK, which is not sufficient for many applications. Analogous results were obtained by Zhang et al [60], who manufactured composite samples from polyethylene, graphene nanoplatelets (0, 3, 6, 9, or 12 wt.%), and poplar wood fibres (40 wt.%), with maleic anhydride-grafted polyethylene (MAPE) as a compatibility agent (3 wt.%). The components were dried, mixed, and extruded using a co-rotating twin-screw extruder.…”

Section: Electrical and Thermal Conductivitysupporting

confidence: 76%

“…The existing literature indicates that enriching WPCs and NFPCs with carbon nanomaterials may be highly beneficial to the performance of the WPCs/NFPCs. Expanding on this, in general, it has been shown that the addition of graphene or carbon nanotubes may result in an improvement of mechanical properties [53][54][55][56], an increase in electrical and thermal conductivity [57][58][59][60], a decrease in water absorption, and an improvement of thermal stability [61,62] and/or fire retardancy [60]. All of these tested properties are listed in Table 1.…”

Section: Improvement Of Wpc/nfpc Performance By the Addition Of Carbo...mentioning

confidence: 94%

“…Ge et al [64]-who compared samples with graphene, carbon nanotubes, bamboo charcoal, and activated carbon-emphasised the fact that the addition of any of these carbon materials slightly decreases the decomposition temperature of the WPCs due to the fact that the carbon allotropes have a higher decomposition temperature than the raw WPC. Zhang et al found only a slightly better thermal stability of GNP- [60] and MWCNT [68]-enriched samples, which again could be related to the agglomeration issue found for high CNM content. The same authors also found that GNP-enriched samples showed increased fire retardancy, measured by the limiting oxygen index test.…”

Section: Thermal Stability and Flammabilitymentioning

confidence: 96%

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Enriching WPCs and NFPCs with Carbon Nanotubes and Graphene

et al. 2022

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Carbon nanotubes (CNTs) and graphene, with their unique mechanical, electrical, thermal, optical, and wettability properties, are very effective fillers for many types of composites. Recently, a number of studies have shown that CNTs and graphene may be integrated into wood–plastic composites (WPCs) and natural-fibre-reinforced polymer composites (NFPCs) to improve the existing performance of the WPCs/NFPCs as well as enabling their use in completely new areas of engineering. The following review analyses the results of the studies presented to date, from which it can be seen that that inclusion of CNTs/graphene may indeed improve the mechanical properties of the WPCs/NFPCs, while increasing their thermal conductivity, making them electroconductive, more photostable, less sensitive to water absorption, less flammable, and more thermally stable. This study indicates that the composition and methods of manufacturing of hybrid WPCs/NFPCs vary significantly between the samples, with a consequent impact on the level of improvement of specific properties. This review also shows that the incorporation of CNTs/graphene may enable new applications of WPCs/NFPCs, such as solar thermal energy storage devices, electromagnetic shielding, antistatic packaging, sensors, and heaters. Finally, this paper recognises key challenges in the study area, and proposes future work.

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Section: Electrical and Thermal Conductivitysupporting

confidence: 76%

Section: Improvement Of Wpc/nfpc Performance By the Addition Of Carbo...mentioning

confidence: 94%

Section: Thermal Stability and Flammabilitymentioning

confidence: 96%

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Enriching WPCs and NFPCs with Carbon Nanotubes and Graphene

et al. 2022

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“…Modification with graphene and graphene derivatives has been realized recently as a way to increase the mechanical properties of polymers as well as wood polymer composites and/or to impart functionality, such as thermal/electrical conductivity or electromagnetic shielding interference [1][2][3]. The application of graphene nanoplatelet (GNPs) in composites is foreseen to grow between 2018 and 2025 by about 40% as it is being increasingly researched for composite-utilizing industries, such as construction, aerospace, and automotive sectors [4,5].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Wood and Graphene Nanoplatelets (GNPs) Reinforced Polymer Composites

Al-Maqdasi

Gong²,

Nyström³

et al. 2020

Materials

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This paper investigates the utilization of commercial masterbatches of graphene nanoplatelets to improve the properties of neat polymer and wood fiber composites manufactured by conventional processing methods. The effect of aspect ratio of the graphene platelets (represented by the different number of layers in the nanoplatelet) on the properties of high-density polyethylene (HDPE) is discussed. The composites were characterized for their mechanical properties (tensile, flexural, impact) and physical characteristics (morphology, crystallization, and thermal stability). The effect of the addition of nanoplatelets on the thermal conductivity and diffusivity of the reinforced polymer with different contents of reinforcement was also investigated. In general, the mechanical performance of the polymer was enhanced at the presence of either of the reinforcements (graphene or wood fiber). The improvement in mechanical properties of the nanocomposite was notable considering that no compatibilizer was used in the manufacturing. The use of a masterbatch can promote utilization of nano-modified polymer composites on an industrial scale without modification of the currently employed processing methods and facilities.

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“…The field combines wood processing techniques for fiber or filler preparation with polymer science and engineering, and a range of polymer processing techniques including extrusion, injection molding, compression molding, and pultrusion. Wood plastic composites (WPCs) incorporating graphene nano-platelets (GNPs) were fabricated using hot-pressed technology to enhance thermal and mechanical behavior [32]. The influences of thermal filler content and temperature on the thermal performance of the modified WPCs were investigated.…”

mentioning

confidence: 99%