Fabrication and characteristics of polyethylene glyco/cotton friction spun composite yarn

AbstractNatural and medical radiation are the most frequent sources of daily low-dose radiation exposure for the general public, but these radiation levels are generally acceptable. Among various occupations, aviation crew members and medical workers are exposed to high levels of radiation from scattered rays. This study focused on developing clothing for shielding aviation crew members from natural radiation during air travel. Materials were selected considering their radiation-shielding properties. A tungsten double-layered composite yarn and a polyethylene terephthalate (PET) fiber fabric containing BaSO4 were manufactured. The characteristics and shielding performances of the products were analyzed. Prototypes of a protective scarf (for shielding the thyroid gland) and apron (for shielding the torso) for flight attendants were produced. A lightweight fabric was produced that neither restricts the movement of the wearer nor causes them skin discomfort. The shielding performances of the tungsten composite and PET fiber fabrics containing BaSO4 were 0.018 mmPb and 0.03 mmPb, respectively, demonstrating low-dose shielding that may be useful for protecting aviation crew members from scattered rays. The characteristics of the developed fibers are comparable to those of materials used in clothing production; therefore, low-dose radiation-shielding clothing could be manufactured for use in aviation, medical, and other industries.

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Electrospun nanofiber/cotton composite yarn with enhanced moisture management ability

Textile Research Journal ◽

10.1177/0040517520984978 ◽

2021 ◽

pp. 004051752098497

Author(s):

Ning Mao ◽

Xiaohong Qin ◽

Liming Wang ◽

Jianyong Yu

Keyword(s):

Water Transport ◽

Moisture Absorption ◽

Water Evaporation ◽

Electrospun Fibers ◽

Electrospun Nanofiber ◽

Knitted Fabrics ◽

Moisture Management ◽

Composite Yarn ◽

Management Ability ◽

Cotton Yarns

Wet comfort is a critical performance for fabrics, especially when human bodies release sweat in daily life. Despite excellent moisture absorption performance, cotton yarns are still limited in the moisture release/transfer ability. Here, based on a novel electrospinning technology, polyacrylonitrile and polystyrene (PS) electrospun nanofiber/cotton composite yarns were produced, respectively. Under fluorescence microscopic observation, electrospun fibers within the composite yarns showed a uniform distribution. As a result, these composite yarn-based knitted fabrics obtained a good water transport ability and a fast water evaporation rate. According to the moisture management test, PS electrospun nanofiber composite yarn-based fabrics exhibited a relatively high one-way transport index R (400%), claiming an enhanced moisture management performance. Finally, specific surface area tests and finite element analyses were used to analyze the water transport mechanism inside the yarns. The results proved that a small number of electrospun fibers played a predominant role in enhancing the moisture management ability of the composite yarns.

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The Effect of Yarn Linear Density on Mechanical Properties of Plain Woven Kenaf Reinforced Unsaturated Polyester Composite

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.465-466.962 ◽

2013 ◽

Vol 465-466 ◽

pp. 962-966 ◽

Cited By ~ 4

Author(s):

Mohd Pahmi bin Saiman ◽

Mohd Saidin Bin Wahab ◽

Mat Uzir Wahit

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Linear Density ◽

Unsaturated Polyester ◽

Composite Panel ◽

Composite Yarn ◽

Polyester Composite ◽

The Impact ◽

Woven Kenaf

To produce a good quality of dry fabric for reinforced material in a natural-based polymer composite, yarn linear density should be in consideration. A woven kenaf dry fabric with three different linear densities of 276tex, 413.4tex and 759tex were produced. The fabrics with different linear densities were been optimize with the assistance of WiseTex software. The optimized dry fabrics were infused with unsaturated polyester to produce composite panel using vacuum infusion process. The composites properties were tested on the tensile strength, flexural strength and the impact strength. The result shows that the mechanical properties of the composite increased when the yarn linear densities increased.

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Effect of spread width on properties of composite yarn

Journal of the Chinese Institute of Engineers ◽

10.1080/02533839.1995.9677729 ◽

1995 ◽

Vol 18 (5) ◽

pp. 633-638 ◽

Cited By ~ 1

Author(s):

Wen‐Yean Wu ◽

Jiunn‐Yih Lee

Keyword(s):

Composite Yarn

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.55-57.413 ◽

2008 ◽

Vol 55-57 ◽

pp. 413-416 ◽

Cited By ~ 1

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.

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Airflow Characteristics During the Rotor Spun Composite Yarn Spinning Process

Fibres and Textiles in Eastern Europe ◽

10.5604/01.3001.0010.4621 ◽

2017 ◽

Vol 25 (0) ◽

pp. 13-17 ◽

Cited By ~ 3

Author(s):

Ruihua Yang ◽

Weidong Gao ◽

Yuan Xue

Keyword(s):

Static Pressure ◽

Breaking Strength ◽

Flow Characteristics ◽

Guide Tube ◽

Channel Inlet ◽

Rotor Speed ◽

Airflow Velocity ◽

Composite Yarn ◽

Transfer Channel ◽

Spinning Process

Rotor spun composite yarn shows compound performances when combined with staple fibres and filaments, such as excellent hand feeling as well as extreme elasticity and strength. Air characteristics including pressure and speed are critical factors of the rotor spun composite yarn spinning process. In this paper, air flow characteristics in a rotor composite yarn spinning unit are simulated and analysed by Ansys, and then verified by experiments. The results show that with the same spinning conditions, static pressure within the filament guide tube is lowest: -9 kPa and in rotor around -5 kPa. The speed of the airstream accelerates from the transfer channel inlet to the outlet, and reaches the largest value of 386 m/s at the outlet. As the rotor speed increases, the airflow velocity increases; the static pressure decreases; the breaking strength and CV of the composite yarn increase, and the breaking elongation and hairiness decrease according to the experiment results.

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Electromagnetic Shielding Effectiveness and Manufacturing Technique of Metal Complex Fabrics

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.496-500.472 ◽

2014 ◽

Vol 496-500 ◽

pp. 472-475

Author(s):

Ching Wen Lou ◽

An Pang Chen ◽

Ting An Lin ◽

Ya Yuan Chuang ◽

Jia Horng Lin

Keyword(s):

Metal Complex ◽

Life Time ◽

Woven Fabrics ◽

Electromagnetic Shielding ◽

Test Results ◽

Test Frequency ◽

Shielding Effectiveness ◽

Conductive Composite ◽

Composite Yarn ◽

Electromagnetic Shielding Effectiveness

In the research, The electromagnetic interferences (EMI) have drastically increased and can disrupt and reduce the life time and the efficiency of devices. Therefore, the electromagnetic shielding problem is become the important issue. In the research, Ni wire and Cu wire (Floodlit Enterprise Co., Ltd.) were used to make the Ni conductive composite yarn and Cu conductive composite yarn via an electrical covering machine. And the Cu conductive composite yarn was fabricated to the woven fabrics with the plain weaving. The test results revealed that the EMSE of the W/K/W complex fabrics have stable EMSE than the W/W/W complex fabrics when the laminated at the same direction. The W/90W/W complex woven fabrics were shown the best EMSE of 46.25 dB, which the test frequency is 1800 MHz.

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A Mathematical Model for Rotor-Spun Composite Yarn Spinning Process

Textile Research Journal ◽

10.1177/0040517509099420 ◽

2009 ◽

Vol 80 (6) ◽

pp. 487-490 ◽

Cited By ~ 2

Author(s):

Rui-Hua Yang ◽

Shan-Yuan Wang

Keyword(s):

Mathematical Model ◽

Composite Yarn ◽

Spinning Process

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A novel concept to produce periodic varied structural composite yarn via cyclical changing of the spacing between filaments and the strand

Textile Research Journal ◽

10.1177/0040517518805384 ◽

2018 ◽

Vol 89 (15) ◽

pp. 2998-3006 ◽

Cited By ~ 1

Author(s):

Zhigang Xia ◽

Jiandong Tang ◽

Wenxiang Ye

Keyword(s):

Mechanical Analysis ◽

The Novel ◽

Geometrical Analysis ◽

Cross Sectional ◽

Composite Yarn ◽

Structural Composite ◽

Formation Zone ◽

Yarn Structure ◽

Novel Concept ◽

Periodic Changes

In this study, a novel concept has been developed as a cyclical spacing-change method to produce periodic varied structural composite yarn. Geometrical analysis indicated that the cyclical change of spacing between filaments and the strand altered the yarn formation zone shapes from corefil to sirofil, causing cyclic yarn structure variations from the hairy core–sheath (corefil section) to the smooth spiral filament wrapping (sirofil section). A mechanical analysis revealed the corefil section with more twists was thinner than the sirofil section with fewer twists. Specifically, the cross-sectional diameter performed gradual periodic changes from the thick sirofil section to the thin corefil section. Then, an eccentric godet wheel device was used to conduct confirmatory experiments. Besides validating the theoretical analysis, the experimental results also showed that the novel concept yarn had the minimum hairiness and medium irregularity and strength after comparisons with sirofil and corefil yarns.

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Characterization and comparison of properties of cryogenic conditioned CNT reinforced thermoset (epoxy) and thermoplastic (poly vinyl alcohol) composite yarns

Journal of Composite Materials ◽

10.1177/00219983211041764 ◽

2021 ◽

pp. 002199832110417

Author(s):

Wei Chen ◽

Yifan Wang ◽

Kun Zhang ◽

Fujun Xu

Keyword(s):

Tensile Strength ◽

Vinyl Alcohol ◽

Thermoplastic Composite ◽

Advanced Materials ◽

Poly Vinyl Alcohol ◽

Practical Applications ◽

Mechanical And Electrical Properties ◽

Composite Yarn ◽

Thermoset Epoxy ◽

New Generation

Carbon nanotube (CNT) fiber/yarn reinforced composites are considered as a new generation of advanced materials for applications in aerospace and space industry. In this study, two types of CNT composite yarns were produced by twisting CNT films and infiltrating with thermoset epoxy (EP) and thermoplastic poly vinyl alcohol (PVA) resins. The tensile strength of CNT/PVA and CNT/EP composite yarn was 409.91 MPa and 206.87 MPa, much higher than that of pure CNT yarn (129.94 MPa). After mono-cryogenic condition, the mechanical and electrical properties of CNT/EP and CNT/PVA composite yarns were both enhanced due to the structure reorder of the CNT bundles and improvement of interfacial bonding. However, after 60 times cyclic-cryogenic conditions, CNT/EP composite yarn showed a ∼10% degradation of tensile strength; while CNT/PVA composite yarn exhibited 6% increment. This study provides fundamental data of the CNT reinforced thermoset and thermoplastic composite yarns for their practical applications in cryogenic environment.

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