Electromagnetic Shielding Effectiveness and Manufacture Technique of Functional Bamboo Charcoal/Metal Composite Woven

Chen, An Pang; Lin, Chin Mei; Lin, Ching Wen; Hsieh, Chien Teng; Lou, Ching Wen; Young, Ya Hui; Lin, Jia Horng

doi:10.4028/www.scientific.net/amr.123-125.967

Cited by 18 publications

(18 citation statements)

References 6 publications

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“…The selected materials can be seen in the pre-existing literature. [11][12][13][14][15][16][17][18] The complex ply yarns were then woven as weft yarns on a loom that used PVCcoated PET filaments as warp yarns. The final products can be used to protect the human body or electronic products from electromagnetic waves and static electricity.…”

Section: Stainless Steel Wiresmentioning

confidence: 99%

Manufacturing techniques and electrical properties of conductive fabrics with recycled polypropylene nonwoven selvage

Lou

Lin

Hsing

et al. 2011

Textile Research Journal

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In this research, an original rotor twister machine, with a speed of 8000 rpm, spun complex ply yarns from recycled polypropylene nonwoven selvage (PPNS) and various metal wires. The core yarn was pieces of 30 g/m2 recycled PPNS and the wrap yarns were 80 μm stainless steel wires. Furthermore, 80 μm stainless steel wires and 80 μm copper wires, parallel to the core yarns, reinforced the complex ply yarns. Yarns were manufactured with wrap numbers of 0.5, 1.5, 2.5, 3.5, and 4.5 turns/cm. Complex fabrics were woven with the complex ply yarns as the weft yarns and PVC-coated PET filaments as the warp yarns. These fabrics were evaluated for surface resistivity and electromagnetic shielding effectiveness (EMSE). The presence of copper reinforcement wires was found to lower the surface resistivity of the fabrics. The lowest surface resistivity was recorded for a fabric woven from yarns with a wrap number of 4.5 turns/cm; that surface resistivity was 28.7 Ω/sq. EMSE measurements showed that fabrics with varied lamination angles provided good electromagnetic shielding. The optimum EMSE measured in this research was 56.1 dB on incident frequency as 2.36 GHz, for a fabric with 0°/90°/0°/90°/0°/90° lamination angles.

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Section: Stainless Steel Wiresmentioning

confidence: 99%

Manufacturing techniques and electrical properties of conductive fabrics with recycled polypropylene nonwoven selvage

Lou

Lin

Hsing

et al. 2011

Textile Research Journal

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“…Bamboo charcoal is a renewable material that has a number of useful characteristics, such as high electric conductivity and self-lubricity, and can be used as an electromagnetic shield [8] and a friction material [9]. On the other hand, bamboo charcoal has a larger surface area (300 m 2 ·g −1 ) than wood charcoal (30 m 2 ·g −1 ) and thus has approximately four times more cavities and a four-fold higher absorption capacity [10].…”

Section: Introductionmentioning

confidence: 99%

Poly(vinyl alcohol) Nanocomposites Reinforced with Bamboo Charcoal Nanoparticles: Mineralization Behavior and Characterization

2015

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Polyvinyl alcohol (PVA) demonstrates chemical stability and biocompatibility and is widely used in biomedical applications. The porous bamboo charcoal has excellent toxin absorptivity and has been used in blood purification. In this study, bamboo charcoal nanoparticles (BCNPs) were acquired with nano-grinding technology. The PVA and PVA/BCNP nanocomposite membranes were prepared and characterized by the tensile test, attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) and X-ray diffraction (XRD). Results showed that the tensile strength and elongation of the swollen PVA membranes containing 1% BCNPs (PB1) were significantly greater than those of PVA and other PVA/BCNP composite membranes. In addition, the major absorption band of OH stretching in the IR spectra shifted from 3262 cm−1 for PVA membrane containing 1% BCNP to 3244 cm−1 for PVA membrane containing 20% BCNP. This blue shift might be attributed to the interaction between the PVA molecules and BCNPs. Moreover, the intensity of the XRD peaks in PVA was decreased with the increased BCNP content. The bioactivity of the nanocomposites was evaluated by immersion in the simulated body fluid (SBF) for seven days. The mineral deposition on PB5 was significantly more than that on the other samples. The mineral was identified as hydroxyapatite (HA) by XRD. These data suggest that the bioactivity of the composite hydrogel membranes was associated with the surface distribution of hydrophilic/hydrophobic components. The PVA/BCNP composite hydrogels may have potential applications in alveolar bone regeneration.

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“…To enhance the EMSE of the woven fabric further, the lamination method described by Chen et al [18] was used. Figure 10 displays a schematic of the lamination method at 0 /45 /90 lamination angles.…”

Section: Effect Of Lamination Angles and Amounts On Emsementioning

confidence: 99%

Antibacterial properties and electrical characteristics of multifunctional metal composite fabrics

Lü

et al. 2014

Journal of Industrial Textiles

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In this research, a hollow spindle spinning machine was used to manufacture the multifunctional metal hybrid yarns with stainless steel wire (SSW) as core material, antibacterial nylon (AN) filaments and bamboo charcoal polyester filaments (BC-PETs) as inner and outer wrapped yarn, respectively. The wrapping numbers of produced metal hybrid yarns varied from 8.0 to 15.5 turns/cm. Furthermore, metal composite woven fabrics were fabricated with the metal hybrid yarns as weft yarns and PET filaments as warp yarns on a loom. These woven fabrics were evaluated in terms of far infrared (FIR) emissivity, anion density, electromagnetic shielding effectiveness (EMSE) and surface resistance. The antibacterial activity of the woven fabrics was assessed against both Staphylococcus aureus and Escherichia coli according two test methods AATCC100-2004 and 90-2011, respectively. The wrapping numbers showed a significant influence on the FIR emissivity and anion density of the produced woven fabrics. The presence of SSW in the hybrid yarns decreased the surface resistance and improved the EMSE of the woven fabrics. EMSE measurement showed that FH-15.5 woven fabrics with 0 /90 /0 /90

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Electromagnetic Shielding Effectiveness and Manufacture Technique of Functional Bamboo Charcoal/Metal Composite Woven

Cited by 18 publications

References 6 publications

Manufacturing techniques and electrical properties of conductive fabrics with recycled polypropylene nonwoven selvage

Manufacturing techniques and electrical properties of conductive fabrics with recycled polypropylene nonwoven selvage

Poly(vinyl alcohol) Nanocomposites Reinforced with Bamboo Charcoal Nanoparticles: Mineralization Behavior and Characterization

Antibacterial properties and electrical characteristics of multifunctional metal composite fabrics

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