Preparation of Bamboo-Like Carbon Nanotube Loaded Piezoresistive Polyurethane-Silicone Rubber Composite

Nabeel, Mohammed; Varga, Miklós; Kuzsela, László; Filep, Ádám; Fiser, Béla; Viskolcz, Béla; Kollár, Mariann; Vanyorek, László

doi:10.3390/polym13132144

Cited by 9 publications

(2 citation statements)

References 65 publications

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“…Among these, the addition of inorganic conductive fillers is the most frequently employed approach. Commonly utilized inorganic conductive fillers mainly include carbon fillers [carbon black (CB), − carbon nanotubes (CNT), − graphene, − carbon fibers, − ] and metal fillers. − CB stands out as the most widely used inorganic conductive filler for improving the conductivity of reticulated PUFs due to the easy availability of raw materials, low price, and the stability of conductivity and long-lasting performance. However, the construction of conductive networks requires a high concentration of conductive fillers, which corresponds to a high percolation threshold .…”

Section: Introductionmentioning

confidence: 99%

Preparation and Study of Low Percolation Threshold Antistatic Reticulated Polyurethane Foam

Yang,

Liang,

Wang

et al. 2024

ACS Appl. Polym. Mater.

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Reticulated polyurethane foam (PUF), a widely utilized polymer-based insulator, is notoriously susceptible to electrostatic issues, posing significant challenges in various applications. Carbon black (CB) as a conductive filler in PUF is easily agglomerated and is difficult to disperse. This can result in the high addition of CB and affects the performance of the PUF. In this work, antistatic reticulated PUFs (PUF-CB) with a low percolation threshold (0.84 wt %) were prepared using conductive CB as an antistatic agent. Creative work has been carried out to disperse CB particles using a ball milling process and the dispersant diisononyl phthalate, which has reduced the agglomeration and greatly improved the dispersion of CB particles. The volume resistivity test results showed that PUF-CB had the lowest volume resistivity of 3.59 × 10 5 Ω•m when the addition of CB was 1.40 wt %. The distribution of CB in polyether polyols and foams was analyzed using optical microscopy and SEM. The distribution of CB particle size was counted using nanoparticle size and a Zeta potential analyzer. The CB dispersion mechanism was innovatively proposed to explain the successful preparation of low percolation threshold PUFs.

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Section: Introductionmentioning

confidence: 99%

Preparation and Study of Low Percolation Threshold Antistatic Reticulated Polyurethane Foam

Yang,

Liang,

Wang

et al. 2024

ACS Appl. Polym. Mater.

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“…Effects of thermal annealing … [2] Electrocatalytic sensing of poly-nitroaromatic compounds … [3] Phosphonium-based ionic liquid as dispersing agent … [4] Development of an advanced Takayanagi equation … [5] The mechanical behavior of CNT reinforced … [6] Experimental determination of mechanical … [7] Prediction of complex modulus in phaseseparated poly (lactic acid) … [8] Influence of oriented CNT forest on thermoelectric … [22] Strain-sensitive electrical conductivity of carbon … [23] Preparation and Electrical Properties of Silicone … [24] Thermoelectric properties of carbon nanotube/silicone rubber ... [25] Preparation of Bamboo-Like Carbon Nanotube Loaded Piezoresistive … [26] Carbon nanotube-based elastomer composites-an approach … [27] Desgin fuzzy system … [28] Electrical conductivity enhancement of Carbon/Epoxy composites … [29] Definition of "b" exponent and development of power-law model … [30] A new analytical model for predicting the electrical … [31] Electrical conductivity of chemically modified multiwalled carbon … [32] https://nanosadra.com/productsdatasheet.pdf/ [33] Study of anti-icing performance of insulator strings … [34] Reducing ice accumulation on insulators by applying semiconducting RTV … [35] Strategies for palladium-catalyzed non-directed ... [36] https://www.wacker.com/cms/en-us/siliconerubber.pdf [37]…”

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confidence: 99%

A developed model for electrical conductivity of silicone rubber-carbon nanotube (CNT) nanocomposites based on power-law model

Mohammadnabi

Rahmani²

2022

Modares Mechanical Engineering

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In this paper, a new model has been proposed to estimate the electrical conductivity of polymer carbon nanotube (CNT) nanocomposites based on the conventional power-law model and Halpin-Tsai formulation. Halpin-Tsai model was originally presented to calculate the tensile modulus of composites, which can be modified for the estimation of the electrical conductivity by replacing the electrical parameters. The nature of the "b" exponent in the power-law model is defined according to CNT dimensions, CNT electrical conductivity, and the interphase thickness, and also the impacts of these parameters on the "b" and the electrical conductivity of nanocomposite are taken into consideration. The developed model interprets that the electrical conductivity of polymer-CNT nanocomposite increases as the concentration, length, and electrical conductivity of CNT and the interphase thickness increase. Furthermore, reduction in CNT diameter and waviness results in the growth of nanocomposite electrical conductivity. In order to validate the developed model, nanocomposite samples with different volume fractions were produced by the solid-state technique of the melt-blending method. The results of calculations and experimental procedures show good agreement.

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Integrating polyurethane‐silicone rubber‐nanohybrid systems for improved wearable pressure sensing

Nabeel,

Addie,

Viskolcz

et al. 2024

Polymer Composites

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Flexible pressure sensors (FPS) are crucial for emerging applications like wearable electronics, human activity monitoring, and soft robotics. This study reports a scalable and cost‐effective approach to fabricate high‐performance piezoresistive FPS based on polyurethane‐silicone rubber (PU‐SR) nanocomposites. The synergistic integration of nitrogen‐doped bamboo‐shaped carbon nanotubes (N‐BCNT) and carbon black (CB) nanofillers within the PU‐SR matrix was achieved via a novel dip‐coating and impregnation method. This technique enabled uniform nanofiller dispersion, enhancing electrical conductivity and mechanical stability. Comprehensive characterization using x‐ray photoelectron spectroscopy (XPS), zeta potential, high‐resolution transmission electron microscopy (HRTEM), and micro‐computed tomography (Micro‐CT) elucidated the structural features and morphological aspects. The optimized N‐BCNT:CB/PU‐SR nanocomposite exhibited exceptional piezoresistive performance, with a sensitivity of 0.4 kPa−1 in the 0–120 kPa range and 0.07 kPa−1 in the 180–1000 kPa range, along with remarkable durability over cyclic loading. When deployed as an electronic skin (e‐skin), the sensor accurately detected various human motions, including finger, wrist, elbow, and knee movements, as well as twisting and stretching actions. This work shows a promising route towards fabricating cost‐effective, flexible, and high‐performance pressure sensors with significant implications for wearable technologies and soft robotics.Highlights Hybrid Nanocomposite sensors achieve high sensitivity over a broad pressure range. N‐CNTs and CB enhance piezoresistivity and durability in PU‐SR nanocomposites. Flexible sensors detect multi‐joint human motions accurately. Alternative dip‐coating technique ensures uniform nanofiller distribution. Cost‐efficient sensors design suitable for wearable e‐skin applications.

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Preparation of Bamboo-Like Carbon Nanotube Loaded Piezoresistive Polyurethane-Silicone Rubber Composite

Cited by 9 publications

References 65 publications

Preparation and Study of Low Percolation Threshold Antistatic Reticulated Polyurethane Foam

Preparation and Study of Low Percolation Threshold Antistatic Reticulated Polyurethane Foam

A developed model for electrical conductivity of silicone rubber-carbon nanotube (CNT) nanocomposites based on power-law model

Integrating polyurethane‐silicone rubber‐nanohybrid systems for improved wearable pressure sensing

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