Tensile behaviour of MWCNT and CNP filled polypropylene thermoplastic composites

Katti, Shrinatha R.; Achutha, M.V.; Sridhara, B.K.

doi:10.1016/j.matpr.2020.10.034

Cited by 4 publications

(4 citation statements)

References 13 publications

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“…Moreover, no migration or aggregate of the CNT in the PBE or at the interface between the two polymers are detected with the TEM image ( Figure 2 c). This kind of morphology and this CNT localization can be confirmed in other studies [ 46 , 48 , 49 ].…”

Section: Resultssupporting

confidence: 87%

“…Therefore, it is found that the CNT increases the viscosity of the blend contrary to the PBE, which increases the fluidity of the polymers blend. The addition of CNT creates more links between the fillers and, thus, reduces the mobility of the macromolecular chains of the PA6.6 [ 43 , 48 ]. The PBE is, thus, adding to overcome to this high viscosity and to improve the blend implementation by melt spun [ 27 ].…”

Section: Resultsmentioning

confidence: 99%

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Melt Spinning of Flexible and Conductive Immiscible Thermoplastic/Elastomer Monofilament for Water Detection

et al. 2021

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In many textile fields, such as industrial structures or clothes, one way to detect a specific liquid leak is the electrical conductivity variation of a yarn. This yarn can be developed using melt spun of Conductive Polymer Composites (CPCs), which blend insulating polymer and electrically conductive fillers. This study examines the influence of the proportions of an immiscible thermoplastic/elastomer blend for its implementation and its water detection. The thermoplastic polymer used for the detection property is the polyamide 6.6 (PA6.6) filled with enough carbon nanotubes (CNT) to exceed the percolation threshold. However, the addition of fillers decreases the polymer fluidity, resulting in the difficulty to implement the CPC. Using an immiscible polymers blend with an elastomer, which is a propylene-based elastomer (PBE) permits to increase this fluidity and to create a flexible conductive monofilament. After characterizations (morphology, rheological and mechanical) of this blend (PA6.6CNT/PBE) in different proportions, two principles of water detection are established and carried out with the monofilaments: the principle of absorption and the short circuit. It is found that the morphology of the immiscible polymer blend had a significant role in the water detection.

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Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Melt Spinning of Flexible and Conductive Immiscible Thermoplastic/Elastomer Monofilament for Water Detection

et al. 2021

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“…However, literature regarding the usage of PBS or PBSA as a polymer matrix is somewhat scarce. Biodegradable polyesters such as PLLA [ 41 , 42 , 43 , 44 ] as well as regular synthetic polymers such as polyolefins [ 45 , 46 , 47 ], polyamides [ 48 ] and polyurethanes [ 49 ] are more widely researched as polymer matrices in carbon-filled composite applications. In a study by Alruwail et al, a PBS/PLA blend composite filled with MWCNT was developed for gas-separation-membrane applications [ 50 ].…”

Section: Resultsmentioning

confidence: 99%

Comparison of Carbon-Nanoparticle-Filled Poly(Butylene Succinate-co-Adipate) Nanocomposites for Electromagnetic Applications

Bleija

Platnieks²,

Macutkevič³

et al. 2022

Nanomaterials

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Electrostatic dissipative (ESD), anti-static (AS), and electromagnetic interference (EMI) shielding materials are commonly based on commodity fossil-fuel-based plastics. This, in turn, contributes to ever-growing non-biodegradable plastic pollution. Graphene nanoplatelets (GN), multi-walled carbon nanotubes (MWCNT), nanostructured carbon black (NCB), and amorphous carbon black (CB) were utilized as nanofillers to prepare bio-based and biodegradable poly(butylene succinate-co-adipate) (PBSA) nanocomposites. Solvent-cast composites were prepared with 1.1 to 30.0 vol.% nanoparticle loading. The literature mainly focuses on relatively low loadings; therefore, for this research, filler loadings were increased up to 30 vol.% but the maximum loading for NCB and CB loadings only reached 17.4 vol.% due to a lack of dimensional stability at higher loadings. The composites were characterized using tensile testing, volumetric and surface conductivity measurements, thermal conductivity measurements, dielectric spectroscopy in the microwave region, and transmittance in the terahertz range. Tensile tests showed excellent carbon filler compatibility and enhanced tensile strength for loadings up to 5 vol.% (up to 20 vol.% for MWCNT). The highest thermal conductivity values were reached for the MWCNT filler, with the 30.0 vol.% filled composite reaching 0.756 W/mK (262% increase over PBSA). All fillers were able to produce composites that yielded volume conductivities above 10−10 S/m. Composites with MWCNT, GN, and NCB inclusions above the percolation threshold are suitable for EMI applications in the microwave and THz frequency range.

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“…The results indicate that the tensile strength of SCF/PEI composites increases with decreasing the temperature due to the higher interfacial clamping stress at low temperature. Katti et al [5] blended the multiwalled carbon nanotube (MWCNT) and carbon nano powder (CNP) were melt into polypropylene (PP) in the ratio of 2.5, 5 and 10 wt% using twin screw extrusion process. The extruded pellets were then injection molded using a 50 Ton injection molding machine to produce PP+CNP and PP+MWCNT composite flat test specimens according to ASTM standards and were used to carry out the tensile tests.…”

Section: Introductionmentioning

confidence: 99%

Effect of fiber type and thickness on mechanical behavior of thermoplastic composite plates reinforced with fabric plies

Öztekin¹,

Gür²,

Kaman³

et al. 2022

JSEAM

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Studies on weight reduction in aviation and space vehicles have gained momentum recently. Thermoplastic matrix composite materials are important alternative materials, especially due to their high specific strength, formability and recyclability. In this study, it is aimed to investigate the mechanical behavior of fiber reinforced thermoplastic composites for different fiber and layer configurations. Thermoplastic composite materials used in the study were produced by lamination technique. In composite production; Glass fiber and carbon-aramid hybrid fabrics were used as fiber, and polyethylene granules were used as matrix. Thermoplastic sheets were obtained by keeping polyethylene granules and woven fibers in the hot press for a certain period of time. The damage behavior of the composite test specimens under tensile load was tested for the number of layers and fiber type. As the number of layers increased, stiffness, damage load and deformations increased in thermoplastic composites. Using hybrid fabric instead of glass as fiber material increased the maximum damage load by 100%.

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Tensile behaviour of MWCNT and CNP filled polypropylene thermoplastic composites

Cited by 4 publications

References 13 publications

Melt Spinning of Flexible and Conductive Immiscible Thermoplastic/Elastomer Monofilament for Water Detection

Melt Spinning of Flexible and Conductive Immiscible Thermoplastic/Elastomer Monofilament for Water Detection

Comparison of Carbon-Nanoparticle-Filled Poly(Butylene Succinate-co-Adipate) Nanocomposites for Electromagnetic Applications

Effect of fiber type and thickness on mechanical behavior of thermoplastic composite plates reinforced with fabric plies

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