Electroless silver plated flexible graphite felt prepared by dopamine functionalization and applied for electromagnetic interference shielding

Mao, Yun Xian; Zhang, Shengqi; Wang, Wei; Yu, Dan

doi:10.1016/j.colsurfa.2018.09.028

Cited by 26 publications

(8 citation statements)

References 35 publications

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“…29−31 In fact, dopamine can be adhered onto almost all substrate surface (either hydrophobic or hydrophilic). 32 The functional groups of PDA including carboxyl, quinone, catechol, amino, and imino groups could provide a versatile platform for the further reaction. In this study, the interaction between the Ag + and catechol groups, that is, the chelation, promotes the Ag precursor migration onto the PDA layer.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…As known, there is only carbon and hydrogen in PP macromolecular chain. To make the fiber surface chemically active, PDA is attached onto the PP fiber by the self-polymerization of dopamine under an alkaline condition. − In fact, dopamine can be adhered onto almost all substrate surface (either hydrophobic or hydrophilic) . The functional groups of PDA including carboxyl, quinone, catechol, amino, and imino groups could provide a versatile platform for the further reaction.…”

Section: Resultsmentioning

confidence: 99%

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Mechanically Durable, Highly Conductive, and Anticorrosive Composite Fabrics with Excellent Self-Cleaning Performance for High-Efficiency Electromagnetic Interference Shielding

Luo

Wang

Huang

et al. 2019

ACS Appl. Mater. Interfaces

134

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Metal-based materials have been widely used for the electromagnetic interference (EMI) shielding due to their excellent intrinsic conductivity. However, their high density, poor corrosion resistance, and poor flexibility limit their further application in aerospace and flexible electronics. Here, we reported a facile means to prepare lightweight, mechanically durable, superhydrophobic and conductive polymer fabric composites (CPFCs) with excellent electromagnetic shielding performance. The CPFC could be fabricated by three steps: (1) the polypropylene (PP) fabric was coated by a polydopamine (PDA) layer;(2) PP/PDA adsorbed the Ag precursor that was then chemically reduced to Ag nanoparticles (AgNPs); (3) PP/PDA/AgNPs fabrics were modified by one layer of polydimethylsiloxane (PDMS). The contact angle (CA) of the CPFCs could reach ∼152.3°while the sliding angle (SA) was as low as ∼1.5°, endowing the materials with excellent self-cleaning performance. Thanks to the extremely high conductivity of 81.2 S/cm and the unique porous structure of the fabric, the CPFC possessed outstanding EMI shielding performance with the maximum shielding effectiveness (SE) of 71.2 dB and the specific shielding effectiveness (SSE) of 270.7 dB cm 3 g −1 in the X band. The interfacial adhesion is remarkably improved owing to the PDMS layer, and the superhydrophobicity, conductivity and EMI SE of CPFCs are almost maintained after cyclic abrasion and winding test. Also, the CPFCs can be used in a harsh environment, due to their excellent water proof property.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Mechanically Durable, Highly Conductive, and Anticorrosive Composite Fabrics with Excellent Self-Cleaning Performance for High-Efficiency Electromagnetic Interference Shielding

Luo

Wang

Huang

et al. 2019

ACS Appl. Mater. Interfaces

134

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“…The processes of pretreatment on polyester fibers for electroless plating have been thoroughly investigated in previous studies [ 44 , 57 , 58 , 59 , 60 ]. To the best of our knowledge, only three steps are needed for the pretreatment including the cleaning, coarsening, and sensitizing.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Conductive Polyester Fibers Using Continuous Two-Step Plating Silver

Liu

et al. 2018

Materials

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Polyester fibers are used in various fields, due to their excellent mechanical and chemical stability. However, the lack of conductivity limits their application potential. In order to prepare conductive polyester fibers, silver is one of the most widely used materials to coat the surface of the fibers. This work aimed to prepare silver-coated polyester fibers by a continuous two-step method, which combined the operations of continuous electroless plating and electroplating. Meanwhile, we designed specialized equipment for the continuous plating of silver on the polyester fibers under a dynamic condition. The mechanical property, washability, electrical resistivity, and electrical conductivity of the resultant conductive polyester fibers obtained from different silver-plating conditions were also characterized. The results demonstrated that the conductive fibers prepared by continuous two-step silver plating equipment, had good electrical conductivity with better mechanical properties and washability.

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“…Moreover, smart textile can sense and response with the deformation of textile and transform signals from static to dynamic, in which the resistance changes accordingly . Therefore, conductive textiles are one kind of main materials used for sensors, but carbonized cloth, silver‐plated cloth, conductive fiber, multidimensional textile conductive material after sewing, more or less have shortcomings of bulky mass, complicated processing methods, or large investments . Printing a conductive layer on a textile surface to obtain functions is a simple method, which in turn can save cost during the large production .…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive and Flexible Pressure Sensor Prepared by Simple Printing Used for Micro Motion Detection

Wang

2019

Adv Materials Inter

Self Cite

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Smart wearable flexible sensors with high sensitivity and stability are still challenging nowadays when used for human motion detection, personal health monitoring, or artificial electronic skins. Here, a sensor assembled in a face‐to‐face manner based on fabric is proposed, firstly polyaniline (PANI)/nanonickel (Ni NPs)/COOH‐functionalized MWCNTs (COOH‐MWCNTs) conductive paste is prepared and printed on the cotton fabric. Then the printed fabric is assembled to be a flexible sensor which has double conductive layers. According to the analysis of the scanning electron microscopy, energy‐dispersive spectroscopy, X‐ray diffraction, and Fourier transform infrared spectroscopy, the synergistic performance of PANI, Ni NPs, and COOH‐MWCNTs is demonstrated. When the pressure is 0–0.1 kPa, gauge factor (GF) is 12.96 kPa−1, and when the pressure is 0.1–1 kPa, the GF is 1.33 kPa−1, indicating superior sensitivity of the sensor compared to traditional textile‐based sensors. It also displays quick response time of 0.2 s and recovery time of 0.3 s. The as‐prepared sensor can effectively monitor human micro motions like face, eye, and fingers movements, and it can also transmit electrical signals agilely by indirect contact. Moreover, a large‐area sensor spatial array is fabricated, and the test indicates the sensor can recognize spatial response.

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Electroless silver plated flexible graphite felt prepared by dopamine functionalization and applied for electromagnetic interference shielding

Cited by 26 publications

References 35 publications

Mechanically Durable, Highly Conductive, and Anticorrosive Composite Fabrics with Excellent Self-Cleaning Performance for High-Efficiency Electromagnetic Interference Shielding

Mechanically Durable, Highly Conductive, and Anticorrosive Composite Fabrics with Excellent Self-Cleaning Performance for High-Efficiency Electromagnetic Interference Shielding

Preparation of Conductive Polyester Fibers Using Continuous Two-Step Plating Silver

Highly Sensitive and Flexible Pressure Sensor Prepared by Simple Printing Used for Micro Motion Detection

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