Weaving carbon fiber/recycled polypropylene selvages to reinforce the polymer‐based protective composite fabrics: Manufacturing techniques and electromagnetic shielding effectiveness

2018 ◽  
Vol 40 (S2) ◽  
pp. E1910-E1917 ◽  
Author(s):  
Ting An Lin ◽  
Yu‐Chun Chuang ◽  
Jan‐Yi Lin ◽  
Mei‐Chen Lin ◽  
Ching‐Wen Lou ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Electromagnetic Shielding ◽  
Shielding Effectiveness ◽  
Recycled Polypropylene ◽  
Manufacturing Techniques ◽  
Composite Fabrics ◽  
Electromagnetic Shielding Effectiveness

Electromagnetic Shielding Effectiveness of Multifunctional Metal Composite Fabrics

2008 ◽  
Vol 78 (9) ◽  
pp. 825-835 ◽  
Author(s):  
Jung-Sim Roh ◽  
Yong-Seung Chi ◽  
Tae Jin Kang ◽  
Sang-wook Nam
Keyword(s):  
Electromagnetic Shielding ◽  
Metal Composite ◽  
Shielding Effectiveness ◽  
Composite Fabrics ◽  
Electromagnetic Shielding Effectiveness

Measurement of Electromagnetic Shielding Effectiveness of the Composite Carbon Fibers/Nickel Thin Film

2010 ◽  
Vol 437 ◽  
pp. 580-583
Author(s):  
Ho Chang ◽  
Yun Min Yeh ◽  
Ching Song Jwo ◽  
Sih Li Chen
Keyword(s):  
Carbon Fiber ◽  
Average Particle Size ◽  
Composite Films ◽  
Waterborne Polyurethane ◽  
Electromagnetic Shielding ◽  
Average Particle ◽  
Shielding Effectiveness ◽  
Conductive Composite ◽  
Blending Method ◽  
Electromagnetic Shielding Effectiveness

This paper presents the development of a conductive composite film and the measurement of electromagnetic (EM) shielding effectiveness (SE) of the prepared film. A coaxial transmission-line technique based on ASTM D4935-99 Standard was used to measure the electromagnetic shielding effectiveness. A nickel nanofluid with an average particle size of 50 nm was prepared with a self-developed nanofluid synthesis system. By using a polymer blending method, carbon fiber and carbon fiber/nickel nanoparticles were blended with waterborne polyurethane (WPU) to prepare conductive composite films of 0.25 mm thick. Experimental results have shown that the electromagnetic shielding effectiveness value of the prepared conductive composite material can reach 26 dB within the range of 50 MHz ~ 1.5GHz.

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.

Thermal conductivity and electromagnetic shielding effectiveness of composites based on Ag-plating carbon fiber and epoxy

2015 ◽  
Vol 132 (33) ◽  
pp. n/a-n/a ◽  
Author(s):  
Junpeng Li ◽  
Shuhua Qi ◽  
Mengyu Zhang ◽  
Zhaofu Wang
Keyword(s):  
Thermal Conductivity ◽  
Carbon Fiber ◽  
Electromagnetic Shielding ◽  
Shielding Effectiveness ◽  
Electromagnetic Shielding Effectiveness

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.

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.

Polysufonamide/Stainless Steel Woven Fabrics: Manufacturing Techniques, Flame Retardance and Electromagnetic Shielding Effectiveness

2020 ◽  
Vol 21 (4) ◽  
pp. 775-784
Author(s):  
Hao-Kai Peng ◽  
YanTing Wang ◽  
Ting-Ting Li ◽  
Ching-Wen Lou ◽  
XiaoXiao Wang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Woven Fabrics ◽  
Electromagnetic Shielding ◽  
Flame Retardance ◽  
Shielding Effectiveness ◽  
Manufacturing Techniques ◽  
Electromagnetic Shielding Effectiveness

scholarly journals Electrical Conductivity and Electromagnetic Shielding Effectiveness of Bio-Composites

2020 ◽  
Vol 4 (1) ◽  
pp. 28
Author(s):  
Konstantinos Tserpes ◽  
Vasileios Tzatzadakis ◽  
Jens Bachmann
Keyword(s):  
Electrical Conductivity ◽  
Carbon Fiber ◽  
Epoxy Resin ◽  
Numerical Models ◽  
Experimental Testing ◽  
Electromagnetic Shielding ◽  
Shielding Effectiveness ◽  
Carbon Fiber Fabric ◽  
Electromagnetic Shielding Effectiveness ◽  
Fiber Fabric

In this paper, the electrical conductivity and electromagnetic shielding effectiveness of two bio-composites are studied by experimental testing and numerical models. Two monolithic composites with partly bio-based content were manufactured. The first bio-composite is made of a carbon fiber fabric prepreg and a partly bio-based (rosin) epoxy resin (CF/Rosin). The second bio-composite is a combination of prepregs of carbon fiber fabric/epoxy resin and flax fiber fabric/epoxy resin (CF-Flax/Epoxy). A single line infusion process was used prior to the curing step in the autoclave. Both variants are exemplary for the possibility of introducing bio-based materials in high performance CFRP. In-plane and out-of-plane electrical conductivity tests were conducted according to Airbus standards AITM2 0064 and AITM2 0065, respectively. Electromagnetic shielding effectiveness tests were conducted based on the standard ASTM D 4935-10. Materials were prepared at the German Aerospace Center (DLR), while characterization tests were conducted at the University of Patras. In addition to the tests, numerical models of representative volume elements were developed, using the DIGIMAT software, to predict the electrical conductivity of the two bio-composites. The preliminary numerical results show a good agreement with the experimental results.

Electromagnetic Shielding Effectiveness of Carbon Black -Carbon Fiber Cement Based Materials

2010 ◽  
Vol 168-170 ◽  
pp. 1438-1442 ◽  
Author(s):  
Shao Wen Huang ◽  
Guang Hua Chen ◽  
Qi Luo ◽  
Yu Hua Xu
Keyword(s):  
Carbon Fiber ◽  
Carbon Black ◽  
Mass Fraction ◽  
Electromagnetic Shielding ◽  
Cement Composites ◽  
Shielding Effectiveness ◽  
Frequency Range ◽  
Cement Based Materials ◽  
Electromagnetic Shielding Effectiveness ◽  
Effective Additive

The electromagnetic shielding effectiveness (SE) of cement based composites filled with carbon black and carbon fiber were discussed in this paper. Results show the SE of cement composites will get obvious improvement as the carbon black mass fraction increases beyond 6%. Carbon fiber is a much more effective additive than carbon back. The shielding effectiveness were gradually improved with the increase of content of carbon fiber, the maximum attained 21 dB at 1.5GHz. Adding carbon black and carbon fiber, SE of the cement based materials get more upward gradient, the maximum SE reached 27 dB in tested frequency range.

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