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- 저자 : Ronghui Guo (검색결과 2 건)
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Meimei Chen,Shan Jiang,Ce Cui,Wenhao Bai,Jianyu Zhai,Ronghui Guo 한국섬유공학회 2023 Fibers and polymers Vol.24 No.8
With the rapid development of modern technology, more and more electronic equipment had entered people’s life, causing serious electromagnetic pollution. In this study, a lightweight, ultra-thin and high electromagnetic shielding film was fabricated by copper electroless deposition after solution immersion coating method combining chitosan (CTS) and reduced graphene oxide on glass fabric (Cu/RGO-CTS-coated glass fabric). Chitosan and RGO had synergistic effect for copper deposition, enhancing electrical conductivity and electromagnetic shielding property. The prepared fabric showed superb conductivity of 8589.3 S/cm and the shielding effectiveness of the Cu/RGO-CTS-coated glass fabric showed as high as 93.6 dB at ultra-thin thickness of 92.4 μm (SSE/t = 3868.8 dB cm2 g-1). Thermal conductivity, antibacterial and hydrophobic properties were also studied. Compared with untreated glass fabric, thermal conductivity of Cu/RGO-CTS-coated glass fabric increased by 437%, protecting electronic equipment from adverse effects at high temperature. Cu/RGO-CTS-coated glass fabric had inhibitory effect on Staphylococcus aureus and Escherichia coli, which could prolong the service life and maintain the appearance of the fabric. Cu/RGO-CTS-coated glass fabric also showed hydrophobicity with self-cleaning function, making it possible for the composite material to be used in many fields such as aerospace industry, microelectronic devices, and transportation to resist electromagnetic interference in high humidity and high pollution environment.
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Shan Jiang,Ce Cui,Weijie Wang,Erhui Ren,Hongyan Xiao,Mi Zhou,Jinzhong Tang,Cheng Cheng,Ronghui Guo 한국섬유공학회 2022 Fibers and polymers Vol.23 No.11
Multifunctional flexible conductive materials have attracted significant attention as next-generation portablewearable electronics. However, designing robust electronics fabrics with high-performance electromagnetic interference(EMI) shielding and reliable use in all-weather environments remains a challenge. Herein, a practical and optimizedmethodology was provided to achieve surface metallization of insulating fabrics for conductive devices. The Ag seeds weresuccessfully embedded on the surface of viscose nonwovens as catalytic centers, and ammonia-free silver plating was carriedout at room temperature. Subsequently, the Ag-wrapped fabric was impregnated with 1-octadecanethiol so that the surface ofthe obtained fabric showed super-hydrophobicity and water contact angle can reach 152.3 °. The Ag/viscose exhibitsultrahigh conductivity (up to 538 S/cm) and the EMI shielding effectiveness (SE) reaches as high as 94.1 dB in the range of1-18 GHz. The obtained Ag/viscose possesses outstanding waterproof, strong mechanical durability, excellent Joule heatingeffect and antibacterial, which can be potentially applied for multifunctional wearable electronics and smart clothing.
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