scholarly journals Investigation on antimicrobial activity and electromagnetic shielding effectiveness of metal composite single jersey fabrics

2019 ◽  
Vol 14 ◽  
pp. 155892501989598
Author(s):  
İlkan Özkan
Keyword(s):  
Vertical Direction ◽  
Electromagnetic Shielding ◽  
Activity Level ◽  
Test Method ◽  
Metal Composite ◽  
Shielding Effectiveness ◽  
Shielding Properties ◽  
Composite Fabrics ◽  
Electromagnetic Shielding Effectiveness ◽  
Single Jersey

In this study, antimicrobial and electromagnetic shielding properties of metal composite single jersey fabrics were investigated. For this purpose, stainless steel wire, copper wire, and metalized silver polyamide filament were commingled with textured polyester. The composite yarns were knitted to single jersey fabrics. Electromagnetic shielding effectiveness of samples was measured according to free space test method between 0.8 and 5.2 GHz frequency range. In addition, antibacterial and antifungal activity tests were performed for the overall technical characterization of composite fabrics. The effects of metal type, filament form on electromagnetic shielding effectiveness, and antimicrobial properties were examined. All composite fabrics showed electromagnetic shielding properties at different levels up to 35 dB in vertical direction. Fabrics including metalized multifilament yarn exhibit higher electromagnetic shielding effectiveness in both vertical and horizontal directions. In addition, antibacterial activity level of metalized silver polyamide and copper composite fabrics reached up to 99% against Klebsiella pneumoniae and Staphylococcus aureus. Furthermore, Aspergillus niger could not grow on these composite fabrics.

Electromagnetic Shielding Effectiveness and Manufacture Technique of Functional Metal Composite Knitted Fabrics

2014 ◽  
Vol 910 ◽  
pp. 262-265
Author(s):  
Jia Horng Lin ◽  
Zhi Cai Yu ◽  
Jian Fei Zhang ◽  
Ching Wen Lou
Keyword(s):  
Stainless Steel ◽  
Electromagnetic Shielding ◽  
Metal Composite ◽  
Shielding Effectiveness ◽  
Frequency Range ◽  
Knitted Fabrics ◽  
Steel Wires ◽  
Core Yarn ◽  
Composite Fabrics ◽  
Electromagnetic Shielding Effectiveness

In order to fabricate fabrics with electromagnetic shielding effectiveness (EMSE) and other function, we fabricated Crisscross-section polyester /antibacterial nylon / stainless steel wires (CSP/AN/SSW) composite yarns with stainless wires as core yarn, antibacterial nylon and crisscross-section polyester as inner and out wrapped yarns, respectively. Knitted fabrics were fabricated with the metal composite yarns with wrap amount of 8 turns/cm on a circular knitted machine. Furthermore, the EMSE of the metal composite fabrics were evaluated by changing the lamination amounts and lamination angles. The results show that when the lamination amount was four, lamination angles were 0°/45°/90°/-45°, the EMSE of the fabrics reached to-10--20 dB in the frequency range of 300 KHz to 3 GHz.

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

2010 ◽  
Vol 123-125 ◽  
pp. 967-970 ◽  
Author(s):  
An Pang Chen ◽  
Chin Mei Lin ◽  
Ching Wen Lin ◽  
Chien Teng Hsieh ◽  
Ching Wen Lou ◽  
...  
Keyword(s):  
Far Infrared ◽  
Woven Fabrics ◽  
Electromagnetic Shielding ◽  
Metal Composite ◽  
Bamboo Charcoal ◽  
Shielding Effectiveness ◽  
Core Yarn ◽  
Metal Wires ◽  
Incident Waves ◽  
Electromagnetic Shielding Effectiveness

In order to fabricate textiles with electromagnetic shielding effectiveness (EMSE) and far infrared emissivity, we fabricated bamboo charcoal/metal (BC/M) composite wrapped yarns with metal wires (stainless steel wires or copper wires) as the core yarn and bamboo charcoal textured yarn as the wrapped yarns using a rotor twister machine. The optimum manufacture parameters included: the speed of the rotor twister was 8000 rpm and the wrapped amounts of the BC/M composite wrapped yarns were 4 turns/cm. The BC/M composite wrapped yarns were made into the BC/M composite woven fabrics using a loom machine. Moreover, we tested the BC/M composite woven fabrics in EMSE and then changed the lamination angles. When the lamination amount was 6, laminated angles were 0°/45°/90°/-45°/0°/45°, 0°/ 90°/0°/ 90°/0°/ 90°, and the frequencies of the incident waves were between 1.83 and 3 GHz, the EMSE of the BC/M composite woven fabrics reached 50 to 60 dB which was satisfactory.

Research on Electromagnetic Shielding Effectiveness of Composite Fabrics Made by Stainless Steel Fiber

2013 ◽  
Vol 821-822 ◽  
pp. 888-893 ◽  
Author(s):  
Wen Xue ◽  
Lan Cheng ◽  
Ang Li ◽  
Nan Nan Jiao ◽  
Bo Wen Chen ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Steel Fiber ◽  
Optical Microscope ◽  
Electromagnetic Shielding ◽  
Shielding Effectiveness ◽  
Stainless Steel Fiber ◽  
Fiber Technology ◽  
Composite Fabrics ◽  
Metallic Fibers ◽  
Electromagnetic Shielding Effectiveness

In this paper, a kind of electromagnetic shielding fabric was introduced. The fabric was woven by composite yarns made of stainless steel fibers, cotton and polyester filaments. Using the tracer fiber technology, the internal structure of yarns and fabrics was observed through the optical microscope. Electromagnetic shielding effectiveness of the fabric was tested by FY800 electromagnetic radiation tester according to the standard of ASTM D4935-10. The optical microscope photographs show that the yarns and fabrics have many different sizes of metal grids internally. Research results show that with the increase of arrangement proportion of metallic yarns, fabric thickness and content of metallic fibers, electromagnetic shielding effectiveness of the fabric has a rising trend.

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