Electromagnetic Shielding Effectiveness of Ti Metal Composite

2020 ◽  
Vol 2 (2) ◽  
pp. 57-63
Author(s):  
Cheng Kun
Keyword(s):  
Electromagnetic Shielding ◽  
Metal Composite ◽  
Shielding Effectiveness ◽  
Electromagnetic Shielding Effectiveness

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.

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.

scholarly journals Investigation of the technical and physical properties of metal composite 1×1 rib knitted fabrics

2020 ◽  
Vol 71 (01) ◽  
pp. 41-49 ◽  
Author(s):  
ÖZKAN İLKAN
Keyword(s):  
Antibacterial Activity ◽  
Bacterial Species ◽  
Control Sample ◽  
Electromagnetic Shielding ◽  
Surface Resistivity ◽  
Metal Wire ◽  
Metal Composite ◽  
Shielding Effectiveness ◽  
Knitted Fabrics ◽  
Electromagnetic Shielding Effectiveness

In this study, it was aimed to determine electromagnetic shielding effectiveness, antibacterial activity, surface resistivityand bending rigidity properties of 1×1 rib knitted fabrics. For this purpose, copper (Cu), stainless steel (SS) and silver(Ag) wires were commingled with two nylon filaments to produce metal composite yarns. 1×1 rib fabrics were producedby these composite yarns. Electromagnetic shielding effectiveness (EMSE), antibacterial activity, surface resistivity andbending rigidity of the composite knits were measured. Electromagnetic shielding measurements of samples wereconducted between 1.0–5.0 GHz frequency. Antibacterial activity test was applied according to AATCC 100 standardagainst K. pneumoniae and S. aureus bacteria. Results showed that knitted fabrics generally have lower SE values than10 dB at wale direction. The double layer samples provide higher EMSE than single layer samples for all metal types.Maximum EMSE value was obtained as 57.12 dB. The use of metal wire significantly reduced surface resistivity ofknitted fabrics. Copper composite knitted fabrics showed 99 % antibacterial activity against both bacterial species. Whencompared to the control sample, the use of metal wire significantly increased the rigidity of the samples.

Analyses on the Manufacture and Physical Properties of Electromagnetic Shielding/ Far Infrared Ray Nonwoven

2010 ◽  
Vol 97-101 ◽  
pp. 1790-1793
Author(s):  
Jia Horng Lin ◽  
Yu Tien Huang ◽  
Chin Mei Lin ◽  
Yi Chang Yang ◽  
Chien Teng Hsieh ◽  
...  
Keyword(s):  
Physical Properties ◽  
Far Infrared ◽  
Electromagnetic Shielding ◽  
Breaking Force ◽  
Shielding Effectiveness ◽  
Machine Direction ◽  
Tear Strength ◽  
Burst Strength ◽  
Far Infrared Ray ◽  
Electromagnetic Shielding Effectiveness

According to the results, when low melting polyester fiber increased to be 20%, the electromagnetic shielding/ far infrared ray nonwoven obtained the optimum burst strength, maximum breaking force and maximum tear strength, and they were as follows: burst strength was 4.2 kgf/cm2; maximum breaking force was 153.59 N in the cross machine direction and 70.80 N in the machine direction; maximum tear strength was 215.77 N in cross machine direction and 117.07 N in machine direction; and optimum electromagnetic shielding effectiveness (EMSE) was 45 dB.

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