Electrical conductivity of carbon black/single‐wall carbon nanotube/low‐density polyethylene ternary composite foam

Yan, Yiying; Iqbal, Asma; Wu, Chun; Wang, Yucheng; Guan, Li; Qi, Rongrong

doi:10.1002/app.48382

Cited by 4 publications

(3 citation statements)

References 52 publications

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“…As shown in Figure 2(a), when dispersing 1.0 mg CNT (or EG) and 0.2 mg PVP into 8.0 mL of deionized water by a sonic bath for 5 min and then leave to set for another 2 min, it can find that the dispersed CNTs and EG will be quickly stacked together in solvent in few minutes; however, the CNT/G dispersion show no obviously aggregates at the same period, which supporting a synergistic dispersion effect of the two 31 . The synergistic effect may be better for the nanocomposites in exploiting their mechanical or functional properties 32,33 . Figure 2(b) and (c) show the SEM images of the fillers.…”

Section: Resultsmentioning

confidence: 99%

High pressure homogenization of graphene and carbon nanotube for thermal conductive polyethylene composite with a low filler content

Wu¹,

Zhou²,

Liu

et al. 2021

J of Applied Polymer Sci

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Thermal conductive polymer composite pipes have been used to replace metal pipes that are easy to be corroded. However, the low thermal conductivity of the matrix is the critical factor limiting their applications. Here, large‐size exfoliation of graphene and carbon nanotube (CNT) are proposed to prepare thermal‐conductive polyethylene nanocomposites with a low filler content. Expanded graphite and CNT are co‐dispersed by high pressure homogenizer in presence of polyvinyl pyrrolidone. Such a dispersion method can maintain the high aspect ratio and reduce generation of defects of graphene and CNTs, which is vital for building a long‐range thermal conductivity pathway in the nanocomposites. In addition, the graphene and CNT fillers can be obtained with high yield and efficiency. When the fillers are dispersed into the polyethylene by optimizing the composition, thermal conductive composites can be obtained with enhanced mechanical properties. The nanocomposite with 5.22 wt.% filler can reach a thermal conductivity of 1.265 W·m−1·K−1, 3.94 times to that of the neat polyethylene, and the mechanical strength can be increased by 42%, supporting improvement of the thermal conductivity and mechanical strength at the same time.

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Section: Resultsmentioning

confidence: 99%

High pressure homogenization of graphene and carbon nanotube for thermal conductive polyethylene composite with a low filler content

Wu¹,

Zhou²,

Liu

et al. 2021

J of Applied Polymer Sci

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“…22 Along with the beneficial role of CNT nanofiller in the foamability of polyolefins, carbonaceous nanoparticles remarkedly enhance the electrical conductivity and electromagnetic interference shielding performance of these polymers. 23,24 Superior mechanical and electrical properties of LDPE foams were reported for the self-reinforced LDPE/CNT nanocomposites foams containing ultra-high molecular weight PE (UHMWPE) fibers. 6 In this work, Aghvami-Panah et al in 2021 demonstrated that better cellular structure of physically-foamed LDPE by incorporating CNT nanofiller resulted in poor mechanical performance.…”

Section: Introductionmentioning

confidence: 83%

Extrusion foaming of multiphasic polyethylene/ethylene-vinyl acetate copolymer/carbon nanotube mixtures: Tailoring foam properties by selective localization of nanoparticles

Ghanemi

Mousavi

Qewami

et al. 2023

Journal of Cellular Plastics

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Semi-conductive foams based on low-density polyethylene/ethylene-vinyl acetate copolymer (LDPE/EVA) blends in the presence of carbon nanotubes (CNTs) were prepared using a twin-screw extrusion process. The effects of CNTs content and localization state in the binary mixture on the physical and structural properties of LDPE/EVA/CNT foams were investigated. The results confirmed that the void fraction, cell density, bubble size and cell size distribution of foams are optimal against CNT loading. The lightest LDPE/EVA/CNT foam was obtained by the CNT localization in the LDPE matrix. This foam containing 2.5 phr of CNT had smaller cells and more uniform cell size comparing to the pure blend foam. The cell density of this foam was 1.598 × 106 cells/cm3, which is much larger than that for the blend foam, 8.64 × 105 cells/cm3. However, the CNT localization state in the dispersed EVA domains resulted in lower void fractions and cell densities comparing with the LDPE/EVA blend foam. The findings clarify the profound impact of the nanofiller localization state on the foam properties of the binary polymeric systems. Light semiconductive LDPE/EVA foams with small cells, uniform cell size and high cell densities were achieved by localizing and dispersing the CNT nanoparticles in the LDPE matrix phase.

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“…At the higher loading of CB which is at 8 wt.%, the conductivity of the CPCs approximately increased by 16.4% when comparing with the conductivity of pure LDPE. Previous work done by Yongsi Y. et al [18], it was reported that the addition of CB filler in LDPE matrix recorded a value of 1.93×10 -7 S cm -1 for composite with 13 wt.%. CB loading.…”

Section: Electrical Conductivitymentioning

confidence: 88%

Preliminary investigation on the correlation between mechanical properties and conductivity of low-density polyethylene/carbon black (LDPE/CB) conductive polymer composite (CPC)

Badrul

Halim

Salleh

et al. 2022

J. Phys.: Conf. Ser.

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The insulating nature of a polymer can be changed to electrically conductive by incorporating conductive fillers within the polymer matrix to form a conductive polymer composite (CPC). One of the potential application of CPCs are in the area of flexible electronic interconnect application. Nevertheless, the correlation between the electrical conductivity and mechanical properties of CPCs such as tensile was found to be limited. Therefore, this paper is aimed to report the preliminary investigation on the correlation between conductivity and mechanical properties of a low-density polyethylene (LDPE) incorporation with conductive filler which is carbon black (CB. It was observed that the tensile strength was decreased by up to 29.4% and the elongation of break was decreased by up to 90.6% at higher CB loading compared to pure LDPE. Nonetheless, the modulus of elasticity and the electrical conductivity of the composites were increased by up to 150.5% and 16.4% at higher CB loading respectively. Moreover, it was found that the effect of CB additions on the tensile modulus was greater compared to the conductivity of the CPCs.

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Electrical conductivity of carbon black/single‐wall carbon nanotube/low‐density polyethylene ternary composite foam

Cited by 4 publications

References 52 publications

High pressure homogenization of graphene and carbon nanotube for thermal conductive polyethylene composite with a low filler content

High pressure homogenization of graphene and carbon nanotube for thermal conductive polyethylene composite with a low filler content

Extrusion foaming of multiphasic polyethylene/ethylene-vinyl acetate copolymer/carbon nanotube mixtures: Tailoring foam properties by selective localization of nanoparticles

Preliminary investigation on the correlation between mechanical properties and conductivity of low-density polyethylene/carbon black (LDPE/CB) conductive polymer composite (CPC)

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