Ultra-stretchable membrane with high electrical and thermal conductivity via electrospinning and in-situ nanosilver deposition

Lv, Xiaohui; Tang, Yuan; Tian, Qingfeng; Wang, Yanpeng; Ding, Tao

doi:10.1016/j.compscitech.2020.108414

Cited by 40 publications

(12 citation statements)

References 35 publications

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“…Recently, more efforts have been made to seek for novel lightweight and high-performance EMI shielding materials [7][8][9][10][11][12]. Conductive polymer composites (CPCs) containing conductive nanofillers have excellent properties such as lightweight, excellent processability and resistance to corrosion compared with traditional metal-based EMI shielding materials [13][14][15][16]. CPCs with porous structures can further lighten the matrix weight and enhance the electrical performance of the composites even at a lower loading of fillers [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Interface Engineered Microcellular Magnetic Conductive Polyurethane Nanocomposite Foams for Electromagnetic Interference Shielding

et al. 2021

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Lightweight microcellular polyurethane (TPU)/carbon nanotubes (CNTs)/ nickel-coated CNTs (Ni@CNTs)/polymerizable ionic liquid copolymer (PIL) composite foams are prepared by non-solvent induced phase separation (NIPS). CNTs and Ni@CNTs modified by PIL provide more heterogeneous nucleation sites and inhibit the aggregation and combination of microcellular structure. Compared with TPU/CNTs, the TPU/CNTs/PIL and TPU/CNTs/Ni@CNTs/PIL composite foams with smaller microcellular structures have a high electromagnetic interference shielding effectiveness (EMI SE). The evaporate time regulates the microcellular structure, improves the conductive network of composite foams and reduces the microcellular size, which strengthens the multiple reflections of electromagnetic wave. The TPU/10CNTs/10Ni@CNTs/PIL foam exhibits slightly higher SE values (69.9 dB) compared with TPU/20CNTs/PIL foam (53.3 dB). The highest specific EMI SE of TPU/20CNTs/PIL and TPU/10CNTs/10Ni@CNTs/PIL reaches up to 187.2 and 211.5 dB/(g cm−3), respectively. The polarization losses caused by interfacial polarization between TPU substrates and conductive fillers, conduction loss caused by conductive network of fillers and magnetic loss caused by Ni@CNT synergistically attenuate the microwave energy.

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Section: Introductionmentioning

confidence: 99%

Interface Engineered Microcellular Magnetic Conductive Polyurethane Nanocomposite Foams for Electromagnetic Interference Shielding

et al. 2021

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“…The material parameters were as follows: thermal conductivity, density, and specific heat capacity of BNNS were respectively set as 300 W m −1 K −1 [ 12 , 13 ], 2.25 g/cm 3 , and 0.73 kJ/(kg·°C) [ 80 ]. The thermal conductivity, density, and specific heat capacity of Ag were set as 490 W m −1 K −1 [ 81 ], 10.49 g/cm 3 , and 0.24 kJ/ (kg·°C), respectively. According to Table S1 ( Supplementary Materials ), the thermal conductivity, density, and specific heat capacity of ANF were set as 3.4528 W m −1 K −1 , 1.1109 g/cm 3 , and 1.5395 kJ/ (kg·°C), respectively.…”

Section: Resultsmentioning

confidence: 99%

Ultra-Robust Thermoconductive Films Made from Aramid Nanofiber and Boron Nitride Nanosheet for Thermal Management Application

et al. 2021

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The development of highly thermally conductive composites with excellent electrical insulation has attracted extensive attention, which is of great significance to solve the increasingly severe heat concentration issue of electronic equipment. Herein, we report a new strategy to prepare boron nitride nanosheets (BNNSs) via an ion-assisted liquid-phase exfoliation method. Then, silver nanoparticle (AgNP) modified BNNS (BNNS@Ag) was obtained by in situ reduction properties. The exfoliation yield of BNNS was approximately 50% via the ion-assisted liquid-phase exfoliation method. Subsequently, aramid nanofiber (ANF)/BNNS@Ag composites were prepared by vacuum filtration. Owing to the “brick-and-mortar” structure formed inside the composite and the adhesion of AgNP, the interfacial thermal resistance was effectively reduced. Therefore, the in-plane thermal conductivity of ANF/BNNS@Ag composites was as high as 11.51 W m−1 K−1, which was 233.27% higher than that of pure ANF (3.45 W m−1 K−1). The addition of BNNS@Ag maintained tensile properties (tensile strength of 129.14 MPa). Moreover, the ANF/BNNS@Ag films also had good dielectric properties and the dielectric constant was below 2.5 (103 Hz). Hence, the ANF/BNNS@Ag composite shows excellent thermal management performance, and the electrical insulation and mechanical properties of the matrix are retained, indicating its potential application prospects in high pressure and high temperature application environments.

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“…The connection of CS@Ag core-shell bers not only endows CS@Ag/plant ber membranes with good thermal conductivity but also low electrical resistance and high electrical conductivity (Lv et al, 2020). The resistance of CS@Ag/plant ber membranes was measured by voltammetry.…”

Section: Resultsmentioning

confidence: 99%

Eco-Friendly Chitosan@Silver/Plant Fiber Membranes for Masks with Thermal Comfortability and Self-Sterilization

Zou

Gai²,

Gai³

et al. 2021

Preprint

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The surgical masks have been essential consumables for public in the COVID-19 pandemic. However, long-time wearing masks will make wearers feel uncomfortable and massive discarded non-biodegradable masks lead to a heavy burden on our environment. In this paper, we adopt degradable chitosan@silver (CS@Ag) core-shell fibers and plant fibers to prepare an eco-friendly mask with excellent thermal comfort, self-sterilization, and antiviral effects. The thermal network of CS@Ag core-shell fibers highly improves the in-plane thermal conductivity of masks, which is 4.45 times higher than that of commercial masks. Because of the electrical conductivity of Ag, the fabricated mask can be electrically heated to warm the wearer in a cold environment and disinfect COVID-19 facilely at room temperature. Meanwhile, the in-situ reduced silver nanoparticles (AgNPs) endow the mask with superior antibacterial properties. Therefore, this mask shows a great potential to address the urgent need for a thermally comfortable, antibacterial, antiviral, and eco-friendly mask.

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Ultra-stretchable membrane with high electrical and thermal conductivity via electrospinning and in-situ nanosilver deposition

Cited by 40 publications

References 35 publications

Interface Engineered Microcellular Magnetic Conductive Polyurethane Nanocomposite Foams for Electromagnetic Interference Shielding

Interface Engineered Microcellular Magnetic Conductive Polyurethane Nanocomposite Foams for Electromagnetic Interference Shielding

Ultra-Robust Thermoconductive Films Made from Aramid Nanofiber and Boron Nitride Nanosheet for Thermal Management Application

Eco-Friendly Chitosan@Silver/Plant Fiber Membranes for Masks with Thermal Comfortability and Self-Sterilization

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