Composite processing and property evaluation of far-infrared/electromagnetic shielding bamboo charcoal/phase change material/stainless steel elastic composite fabrics

2016 ◽  
Vol 36 (2) ◽  
pp. 211-220 ◽  
Author(s):  
Chien-Lin Huang ◽  
Yu-Tien Huang ◽  
Ting-Ting Li ◽  
Chia-Hsuan Chiang ◽  
Ching-Wen Lou ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Phase Change ◽  
Phase Change Material ◽  
Far Infrared ◽  
Electromagnetic Shielding ◽  
Bamboo Charcoal ◽  
Shielding Effectiveness ◽  
Knitted Fabrics ◽  
Composite Fabrics ◽  
Change Material

Abstract This study aims to fabricate far-infrared (FIR)/electromagnetic shielding composite fabric and its composite yarn. Five types of composite yarns with different sheath components were made by using bamboo charcoal (BC) fibers, phase change material (PCM) roving and stainless steel (SS) fibers via a ring spinning frame, and then fabricated into five elastic warp-knitted fabrics with different weft yarns using a crochet knitting machine. The mechanical properties of different constituents of composite yarns and their fabrics, as well as FIR emissivity and electromagnetic shielding effectiveness (EMSE) of resulting fabrics were evaluated. The results show that BC/SS composite yarns and their fabricated warp-knitted fabrics display the highest tensile strength. Warp-knitted fabrics containing BC fibers possess the highest FIR emissivity. EMSE of the fabricated warp-knitted fabrics improves proportionally with the number of the lamination layers. The resulting multifunctional elastic knitted fabrics apply as athletic clothing, underwear, socks, protective or healthcare products in the future.

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 functions of stainless steel/bamboo charcoal conductive fabrics

2013 ◽  
Vol 44 (3) ◽  
pp. 477-494 ◽  
Author(s):  
Po-Wen Hwang ◽  
An-Pang Chen ◽  
Ching-Wen Lou ◽  
Jia-Horng Lin
Keyword(s):  
Stainless Steel ◽  
Electromagnetic Waves ◽  
Experimental Testing ◽  
Cellular Phone ◽  
Far Infrared ◽  
Electromagnetic Shielding ◽  
Bamboo Charcoal ◽  
Shielding Effectiveness ◽  
Plied Yarn ◽  
Electromagnetic Shielding Effectiveness

Following technological advancements, there is a growing population of cellular phone and computer users. However, these electronic instruments cause electromagnetic waves, negatively influencing users’ health or precision instruments’ malfunction. Therefore, shielding electromagnetic wave becomes an important matter. In this study, stainless steel wires and bamboo charcoal roving are made into conductive yarn with 6 turns/cm by ring spinning machine. On a 14-gauge automatic horizontal knitting machine, the resulting yarn is then knitted into stainless steel/bamboo charcoal conductive fabrics and then evaluated for the electrical property and functions. According to experimental testing, electromagnetic shielding effectiveness (EMSE) of the fabrics increases with an increase in stainless steel content and number of lamination layers. In particular, when laminated at an angle of 0°/45°/90°/−45°/0°/45°, the fabrics have an EMSE of above 30 dB at an incident frequency between 2010 and 2445 MHz. The far infrared emissivity increases with bamboo charcoal content, reaching the maximum of 0.9 ɛ, when the fabric was made by one-cycle polyethylene terephthalate (PET)/stainless steel/bamboo charcoal plied yarn in the first feeder and four-cycle PET/bamboo charcoal plied yarn in the second feeder.

The Process and Property Characteristic of Electromagnetic Shielding Functional Warp Knitted Composite Fabrics

2011 ◽  
Vol 287-290 ◽  
pp. 712-716 ◽  
Author(s):  
Jia Hornag Lin ◽  
Yu Tien Huang ◽  
Chin Mei Lin ◽  
Yi Chang Yang ◽  
Ching Wen Lou
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Electromagnetic Wave ◽  
Life Quality ◽  
Strength Test ◽  
Electromagnetic Shielding ◽  
Bamboo Charcoal ◽  
Shielding Effectiveness ◽  
Knitted Fabrics ◽  
Electromagnetic Shielding Effectiveness

The scientific progress has improved human life quality, meanwhile today's high-stress lifestyle has resulted in a rising demand for health care and well-being products. The high technology products and innovation make our life more convenient and at the same time the negative effects, such as electrostatic and electromagnetic wave. High electromagnetic wave affects the human body in different ways. Technological innovation and product aesthetics are both important for modern life quality. Companies have invested in research, development and essential household items to improve the lives such as thermal retentivity and antistatic. In this study, PET fiber was used as warp, and PET fiber, bamboo charcoal nylon fiber and stainless steel fiber employed as weft to weave three groups of resilient warp knitted fabrics. Then various examination have been conducted, including electromagnetic shielding effectiveness, tensile strength test, tearing strength test, burst strength test. The results indicate that the electromagnetic shielding effectiveness of bamboo charcoal / stainless steel resilient warp knitted fabrics attained 35 dB and the shielding achieved 99.9 %. The tensile strength of bamboo charcoal / stainless steel resilient warp knitted fabrics (weft) reached 26 MPa.

scholarly journals Comfort and Functional Properties of Far-Infrared/Anion-Releasing Warp-Knitted Elastic Composite Fabrics Using Bamboo Charcoal, Copper, and Phase Change Materials

2016 ◽  
Vol 6 (3) ◽  
pp. 62 ◽  
Author(s):  
Ting-Ting Li ◽  
Yi-Jun Pan ◽  
Chien-Teng Hsieh ◽  
Ching-Wen Lou ◽  
Yu-chun Chuang ◽  
...  
Keyword(s):  
Phase Change ◽  
Functional Properties ◽  
Phase Change Materials ◽  
Far Infrared ◽  
Bamboo Charcoal ◽  
Elastic Composite ◽  
Composite Fabrics

Manufacturing Process and Property Evaluation of Functional Composite Yarn-Dyed Woven Fabrics Made from Bamboo Charcoal/Stainless Steel and TPU

2008 ◽  
Vol 55-57 ◽  
pp. 413-416 ◽  
Author(s):  
C.I. Huang ◽  
C.I. Su ◽  
Ching Wen Lou ◽  
Wen Hao Hsing ◽  
Jia Horng Lin
Keyword(s):  
Stainless Steel ◽  
Manufacturing Process ◽  
Far Infrared ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Weft Yarn ◽  
Bamboo Charcoal ◽  
Functional Composite ◽  
Composite Yarn ◽  
Composite Fabrics

Recently, development of technology increases human life quality and gradually raises the value of health protection in human’s concept. Bamboo has multi-functional including far infrared radiation, deodorization and anion generation. Therefore, bamboo charcoal has been widely used in textile industry. Moreover, development of technology also increased the electromagnetic hazard in human’s daily life. This study aims to develop a manufacturing process of functional composite yarn-dyed woven fabrics. In the manufacturing process, the materials included pure cotton yarn, stainless steel fiber(called metallic yarn) and viscose rayon yarn containing bamboo charcoal (called bamboo charcoal yarn) were used for making the bamboo charcoal/stainless steel composite woven fabric. The composite woven fabrics were woven by using same warp yarn and two kinds of weft yarn that contained bamboo charcoal and stainless steel. The composite fabrics had two different structures. Those fabrics were changed the order of bamboo charcoal yarn and metallic yarn. The ratios of weft yarn were 1 end of bamboo charcoal yarn to 1 end of metallic yarn and 3 ends of bamboo charcoal yarn to 1 end of metallic yarn. Furthermore, the fabrication of composite fabrics that included plain, 2/2 twill and dobby were changed. The composite woven fabrics were finished and laminated by TPU film to enhance the waterproof and vapor permeable functions. The laminated composite fabrics were evaluated by far-infrared coefficient, anion generation rate, water vapor permeability, water resistance, surface electric resistance and electromagnetic shelter property to obtained optimal manufacturing process.

Processing techniques and properties of metal/polyester composite plain material: Electromagnetic shielding effectiveness and far-infrared emissivity

2018 ◽  
Vol 49 (3) ◽  
pp. 365-382 ◽  
Author(s):  
Jia-Horng Lin ◽  
Ting An Lin ◽  
Ting Ru Lin ◽  
Jia-Ci Jhang ◽  
Ching-Wen Lou
Keyword(s):  
Stainless Steel ◽  
Copper Wire ◽  
Steel Wire ◽  
Far Infrared ◽  
Woven Fabrics ◽  
Electromagnetic Shielding ◽  
Double Layers ◽  
Infrared Emissivity ◽  
Shielding Effectiveness ◽  
Electromagnetic Shielding Effectiveness

In this study, a composite plain material is composed of woven fabrics containing metal wire with shielding ability and polyester filament that can provide flexibility and far-infrared emissivity. Furthermore, a wrapping process is used to form metal/far-infrared–polyester wrapped yarns, which are then made into metal/far-infrared–polyester woven fabrics. The effects of using stainless steel wire, Cu (copper) wire, or Ni–Cu (nickel-coated copper) wire on the wrapped yarns and woven fabrics are examined in terms of tensile properties, electrical properties, and electromagnetic shielding effectiveness. Moreover, SS+Cu+Ni-Cu woven fabrics have maximum tensile strength, while SS+Ni-Cu woven fabrics have the maximum elongation and SS+Cu+Ni-Cu woven fabrics have the lowest surface resistivity. Stainless steel composite woven fabrics have far-infrared emissivity of 0.89 when they are composed of double layers. electromagnetic shielding effectiveness test results indicate that changing the number of lamination layers and lamination angle has a positive influence on electromagnetic shielding effectiveness of woven fabrics. In particular, SS+Cu+Ni-Cu woven fabrics exhibit electromagnetic shielding effectiveness of −50 dB at a frequency of 2000–3000 MHz when they are laminated with three layers at 90°.

Developing a thermo-regulative system for nonwoven textiles using microencapsulated organic coconut oil

2020 ◽  
pp. 152808372092149
Author(s):  
Saraç E Gözde ◽  
Öner Erhan ◽  
Kahraman M Vezir
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Coconut Oil ◽  
Nonwoven Fabric ◽  
Scanning Calorimetry ◽  
Microencapsulated Phase Change Material ◽  
Nonwoven Textiles ◽  
Composite Fabrics ◽  
Change Material ◽  
Scanning Electron

Organic coconut oil was investigated as a bio-based phase change material in core, and melamine formaldehyde was used as shell material to fabricate microencapsulated phase change material for thermo-regulation in nonwoven textiles. The microcapsules were synthesized using in situ polymerization method. The produced microcapsules (microencapsulated phase change material) were applied by knife coating in different ratios (1:5 and 1.5:5; MPCM: coating paste by wt.) to 100% polypropylene nonwoven, porous, and hydrophilic layer of a laminated, spunbond, and double-layer fabric. The coated layer was confined within two layers of the fabric to develop a thermo-regulative system on the nonwoven fabric to regulate the body temperature in surgeries. The two layers were composed by applying heat (140°C) and pressure (12 kg/cm2). Organic coconut oil, the fabricated microcapsule, and the composite fabrics were characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry, and scanning electron microscopy. Scanning electron microscopy results revealed that spherical and uniform microcapsules were obtained with an approximate particle size of 2–6 µm. Differential scanning calorimetry results indicated that microencapsulated phase change material and the composite fabrics possessed significant melting enthalpies of 72.9 and 8.4–11.4 J/g, respectively, at peak melting temperatures between 21.6 and 22.8°C within human comfort temperature range. The utilization of coconut oil as a phase change material and the composite integration of this phase change material to a nonwoven fabric bring forward a novelty for future applications.

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.

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