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1.
Huseyin Gazi Ortlek Omer Galip Saracoglu Oznur Saritas Sinem Bilgin 《Fibers and Polymers》2012,13(1):63-67
In this study, electromagnetic shielding characteristics of woven fabrics made of hybrid yarns are investigated. For this
purpose, initially the hybrid yarns containing stainless steel wire are produced with hollow spindle covering technique, and
then eight different fabric samples are produced using these hybrid yarns. Electromagnetic shielding values of fabric samples
are determined by a test set up based on enclosure measurement technique. Measurements are made in the frequency range of
30 MHz-9.93 GHz. Test results show that woven fabric samples investigated in this study have 25–65 dB electromagnetic shielding
effectiveness for incident frequency. It was also shown that the direction, density and settlement type of conductive hybrid
yarn in fabric structure are important parameters affecting electromagnetic shielding characteristics of woven fabrics. 相似文献
2.
In this study, the dimensional and some physical properties of plain knitted fabrics made from 50/50 bamboo/cotton blended
yarns are investigated. In order to see the differences and similarities, the results are then compared with those for similar
fabrics knitted from 50/50 conventional viscose/cotton and 50/50 modal/cotton blended yarns. Each fabric type was produced
with three different stitch lengths. After all fabrics were dyed under identical dyeing conditions, they were subjected to
dry and full relaxation treatments. For dimensional properties of fabrics, course, wale and stitch densities were measured.
Then, by calculating statistically best-fit lines passing both through the experimental points and the origin, dimensional
constants i.e. k values were predicted in terms of the fiber types. The result show that each fabric type knitted from bamboo/cotton, viscose/cotton
and modal/cotton blended yarns behaves in a similar manner. However, in both dry and fully relaxed states, the modal/cotton
knitted fabrics tend to have slightly higher k values than the bamboo/cotton and viscose/cotton knitted fabrics. For physical properties, fabric weight per unit area, thickness,
bursting strength, air permeability and pilling were evaluated. The results show that the weight, thickness and air permeability
values are independent of the fiber type. Plain knitted fabrics from modal/cotton blended yarns have the highest bursting
strength values. Plain knitted fabrics from bamboo/cotton blended yarns tend to pill less. 相似文献
3.
Aramid fibers are mainly used for industrial applications and human body protection against ballistic threats. But they are
used mostly in forms of composites. And fabrics woven with a high yarn count offer a moderate protection performance against
the knife stabbing due to the low shear strength. This research is focused on investigating the effect of the aramid core-spun
yarns on the stab resistance of the woven fabrics. With the aramid core-spun yarns with core to sheath weight ratio of 1 to
2.5 the armor specimens having different fabric densities were prepared and the knife edge impact test was conducted. On the
impact energy of the knife at the level 1 according to the NIJ standard, the drop tower test results demonstrated that fabric
density of the armor specimens affected the stab resistance significantly. The penetration depth of the impactor through the
armor specimens was associated with the thickness and mass of the armor sample in different ways. Being the stab resistance
introduced by considering the penetration depth of the impactor via thickness and weight per surface area, the effects of
the fabric conditions on the anti-stabbing property could be systematically analyzed and turned out that there was an optimal
level of the fabric density, showing the most effective stab resistance. 相似文献
4.
Vildan Sülar Eren Oner Gökberk Devrim Mehmet Aslan Burçin Eser 《Fibers and Polymers》2016,17(12):2085-2094
Biodegradable products are parts of a natural cycle. The biopolymers and the fibers that can be produced from them are very attractive on the market because of the positive human perception. Therefore, PLA being a well known biodegradable fiber and some conventional fibers were selected for the current study to examine the differences between them and to emphasize the importance of biodegradability beside fabric performance. 14.8 tex (Ne 40/1) combed ring spun yarns produced from biodegradable fiber PLA, new generation regenerated fibers Modal and Tencel, synthetic and blends 50/ 50 % cotton/polyester and 50/50 % viscose/polyester, polyester were selected as yarn types and by using these yarns, six knitted fabrics were produced and some important yarn and fabric properties were compared. In this context, moisture and the tensile behavior of yarns and pilling, bursting strength, air permeability and moisture management properties of the test fabrics are discussed. 相似文献
5.
Ahu Demiroz Gun 《Fibers and Polymers》2011,12(2):258-267
The dimensional, some physical and thermal comfort properties of the plain knitted fabrics having modal viscose microfibers
in three different stitch lengths are investigated in comparison with the similar fabrics having conventional modal viscose
fibers. The fabrics made from microfibers and conventional fibers exhibit different dimensional properties. The stitch density
results and the dimensional constants calculated at the fully relaxed state reveal that the fabrics with microfibers tend
to have lower shrinkage tendency than those with conventional fibers. The statistical results show that the fiber type (or
fiber fineness) and the stitch length affect the some physical properties and all of the thermal comfort properties of the
fabrics significantly. The bursting strength values of the fabrics with microfibers are observed to be slightly higher than
those of the fabrics with conventional fibers. However, the difference between the bursting strength values of these fabrics
is found to be statistically unimportant. The fabrics with microfibers reveal lower thickness and air permeability and, higher
pilling tendency than those with conventional fibers. It is also observed from the thermal comfort results that the fabrics
made from microfibers have higher thermal conductivity, thermal absorptivity and maximum heat flux values and, lower thermal
resistance and thermal diffusivity values. Because of the higher thermal absorptivity and maximum heat flux values, the fabrics
from microfibers provide cooler feeling when compared with those from conventional fibers. 相似文献
6.
Murata vortex spinning system is based on the air jet spinning system. The vast majority of previous works deal with the properties
of vortex spun (VS) yarn and the spinning system. In this study, we investigated knitted fabrics from VS yarn in comparison
with fabrics from ring (RS), compact (CS) and open-end rotor (OES) spun yarns made from viscose. The effect of yarn spinning
system on dimensional and physical properties of knitted fabrics was explained with specific attention to fabrics from VS
yarn. Shrinkage of fabrics from VS yarn has the lowest at widthwise direction, while having the highest at lengthwise direction.
It is shown that the order of fabric spirality and twist liveliness for yarns from different spinning systems are quite similar.
However, relation between loop shape factor and angle of spirality is inconsistent. Angle of spirality of fabrics from VS
yarn is higher than fabrics from OES yarn, but lower than that of others. The bursting strength of fabrics from VS yarn is
lower than that of those from RS and CS yarns and higher than that of those from OES yarn. From this study, it is also evident
that fabrics from VS yarn have the lowest pilling tendency and highest resistance to abrasion. 相似文献
7.
A low torque spinning method has been recently developed by integrating the ring spinning process with false twisting techniques. As a result of false twist and true twist, a novel single yarn of low torque and soft handle is generated. Based on the similar spinning principle, this paper proposed a 2-step spinning method, which is composed of twisting-anduntwisting operation and can be considered as a variant of the low torque spinning method. The proposed spinning method separates the false twisting process into twisting and untwisting processes which are combined in one step in the low torque spinning method. In this paper, physical properties of yarns produced by the proposed spinning method were evaluated and compared with the conventional yarns. Influences of various spinning parameters on the properties of 2-step yarns were also examined. Furthermore, a systematic study of the physical properties of the 2-step yarns and resultant fabrics with respect to the conventional and low torque ones was carried out. The experimental results showed that the 2-step yarns exhibit slightly higher tenacity, lower wet snarl and much less hairiness than the conventional yarns, which, however, are inferior to the low torque yarns, particularly the evenness. The fabrics made by the 2-step yarns show the softest handle feeling, best airpermeability and moderate spirality angle with acceptable pilling resistance. 相似文献
8.
This paper presents the low stress mechanical properties of plain fabrics woven from cotton, bamboo viscose and cotton-bamboo viscose blended yarns. Three blends (100 % cotton, 50:50 cotton-bamboo and 100 % bamboo) were used to produce three yarn counts (20, 25 and 30 Ne). Each of these yarns was used to make fabrics with different pick densities (50, 60 and 70 picks per inch). It was found that bending rigidity, bending hysteresis, shear rigidity, shear hysteresis and compressibility is lower for bamboo fabrics as compared to those of 100 % cotton fabrics. On the other hand, extensibility, tensile energy and compressional resilience are higher for 100 % bamboo fabrics than 100 % cotton fabrics. Higher pick density increases linearity of load-elongation curve, bending rigidity, shear rigidity and compressional resilience. Shear and bending rigidities show very good correlation with the respective hysteresis values. 相似文献
9.
Snezana B. Stankovic 《Fibers and Polymers》2008,9(2):187-193
The novel designed hemp/filament hybrid yarns were used to produce knitted fabrics in order to investigate the influence of
the unique internal structure of hybrid yarns on compressional behavior of clothing textile materials. The knitted fabrics
are subjected to successive compression-release cycles and the compression-release curves obtained made it possible to calculate
the particular compression parameters such as recoverable and irrecoverable compression. By using the parameters the non-elastic
deformation components (viscoelastic and plastic deformation) are determined. In spite of generally accepted fact that van
Wyk’s theory has some limitations, since it does not explain the hysteresis caused by fiber slippage and friction effects,
the two-parameter mechanical model derived from van Wyk’s compression theory is applied successfully to determine the compression
hysteresis. 相似文献
10.
Muhammet Uzun 《Fibers and Polymers》2013,14(10):1714-1721
The paper focuses on the application of ultrasonic energy in textile laundering. In recent years, there has been an increasing interest in ultrasonic energy application in textile industry; however, the effect of ultrasonic laundering on the thermophysiological properties of knitted fabrics has not been studied yet. This study was conducted by using polylactic acid (PLA), cotton, polyethylene terephthalate (PET), and poly acrylic (PAC) fibres containing yarns and their blends. Knitted fabrics, single pique, were made from these yarns by using weft knitting machine. The fabrics were washed ten times for 15 and 60 minutes under 40 °C by using conventional and ultrasonic washing methods. The main aim was to determine the effect of washing methods on the thermophysiological properties of the fabrics. It is also aimed to analyse and evaluate the thermophysiological properties of the PLA fabrics. The incorporation of 100 % PLA and cotton/PLA yarns into single pique knitted fabrics has been attempted to produce for the first time and studied their thermal comfort properties. The results show that the washing processes have a critical importance for the tested fabrics in terms of thermal conductivity, thermal resistance, thermal absorbtivity, water vapour permeability, and heat loss. It has been also demonstrated that the fabric cleaning by using ultrasonic method enhanced the properties of tested fabrics such as thermal conductivity and % recovery. It was also noted that 15 minutes ultrasonically washed fabrics had significantly lower thermal resistance as compared to conventionally washed fabrics. 相似文献
11.
Composite materials have a wide range of applications in structural components because of their high strength-to-weight and stiffness-to-weight ratios. However, the most crucial and common life-restricting crack growth mode in laminated composites i.e. delamination is of great concern. Air jet texturing was selected to provide a small amount of bulk to the glass yarn. The purpose was to provide more surface contact between the fibres and resin and also to increase the adhesion between the neighbouring layers. These were expected to enhance the resistance to delamination in the woven glass composites. The development and characterisation of core-and-effect textured glass yarns was presented in the previous paper. This paper describes the comparison of the mechanical properties of composites produced from air-textured glass yarns and the composites made from locally manufactured carbon fabrics. The tensile, flexure and inter-laminar shear strength (ILSS) were compared and it was observed that although glass fibres are inferior to carbon fibres in terms of mechanical properties however, the flexure strength and ILSS of glass based composites increases after texturing and were found closer to the properties of carbon based composites. 相似文献
12.
Spirality is one of the major potential problems in knitted fabrics and garments. It affects the aesthetics and physical properties
of the garment produced, such as the seam displacement, shape retention, pattern distortion and sewing difficulties. In this
paper, a comparative study has been carried out to evaluate the physical performance of 100 % cotton knitted fabrics and garments
produced by the modified low twist and conventional ring yarns through the actual wearing and washing trials. Experimental
results showed that the properties of side seam displacement, fabric spirality, dimensional stability and skewness change
of the T-shirts and sweaters made by the modified single yarns are comparable to those of garments made from the control plied
yarns but much improved when compared to those from the control single yarns. In addition, the pilling resistance and bursting
strength of the knitted fabrics made by the modified single yarns can still maintain a reasonably high level at a low yarn
twist. 相似文献
13.
The abrasion behavior of three kinds of warp knitted fabrics, which are normally used for upper sole of footwear, was evaluated.
We measured the changes of mechanical and structural properties of each sample as abrasion cycle increased. Each sample showed
similar trends in compression and surface properties but there were significant differences in abrasion rate among the samples.
The mechanical properties showed remarkable differences with directions. The frictional coefficient (MIU) of fabric surface
increased at the beginning of abrasion and decreased as abrasion cycles increased. The weight and thickness of the fabric
linearly decreased with abrasion cycles. The surface roughness (SMD) and the compressional resilience (RC) decreased as abrasion
cycles increased while compressional energy (WC) increased. 相似文献
14.
M. Bakhtiari S. Shaikhzadeh Najar S. M. Etrati Z. Khorram Toosi 《Fibers and Polymers》2006,7(3):295-304
High-bulk worsted yarns with different shrinkable and non-shrinkable acrylic fibers blend ratios are produced and then single
jersey weft knitted fabrics with three different structures and loop lengths are constructed. The physical properties of produced
yarns and compression properties of produced fabrics at eight pressure values (50, 100, 200, 500, 1000, 1500 and 2000 g/cm2) were measured using a conventional fabric thickness tester. Then, weft-knitted fabric compression behavior was analyzed
using a two parameters model. It is found that at 40% shrinkable fibre blending ratio the maximum yarn bulk, shrinkage, abrasion
resistance and minimum yarn strength are obtained. It is also shown that high-bulk acrylic yarn has the highest elongation
at 20% shrinkable fibre blend ratio. The statistical regression analysis revealed that the compression behavior of acrylic
weft-knitted fabrics is highly closed to two parameter model proposed for woven fabrics. It is also shown that for weft-knitted
structure, there is an incompressible layer (V′) which resists against high compression load. Acrylic weft-knitted fabrics with knit-tuck structure exhibit higher compression
rigidity and lower softness than the plain and knitmiss structures. In addition, at 20% shrinkable fibre blend ratio, the
high-bulk acrylic weft-knitted fabrics are highly compressible. 相似文献
15.
This paper assesses the color difference and color strength values (K/S) obtained for eight disperse-dyed polyester fabric samples with different fabric construction parameters (weft yarn type,
weft yarn count, weft density and fabric weave) after four sets of abrasion cycles. Warp yarn type and count, warp density,
and warp yarn twist are the same for all fabrics. Fabric samples are dyed in a commercial red disperse dye (C.I. Disperse
Red 74:1) and four different abrasion cycles (2500, 5000, 7500, 10000) are used. TheK/S values of the abraided fabrics and color difference values between the control fabric (dyed but not abraided) and abraded
fabrics are calculated. The main differences in theK/S and color difference values are observed between 0–2500 abrasion cycles. The high tenacity of the polyester fibers and continuous
polyester yarns causes some fuzz but no pilling formation on the fabric surface that lead to increasedK/S values and color differences. Fiber dullness, yarn thickness, yarn density and fabric weave are concluded to have different
effects on the appearance after abrasion. 相似文献
16.
Vahid Shakeri Siavashani Peiman Valipour Ezzatollah Haghighat 《Fibers and Polymers》2014,15(4):729-735
In this study, the effect of corona discharge treatment on the physical and mechanical properties of bleached cotton and polyester-cotton fabrics were investigated. For this purpose, the samples were treated by corona discharge at two levels of voltage 5 and 10 kV, and at various duration times of plasma, ca. 1.4, 2.1 and 3.5 min. The corona discharge treatment was applied on the fabric samples before and after bleaching treatment. The results show that the corona influences on the surface morphology, breaking strength, air permeability, abrasion resistance, and pilling of cotton and polyester-cotton fabrics. Moreover, the levels of voltage and duration of plasma have a different effect on the properties of fabrics. 相似文献
17.
Hafsa Jamshaid Rajesh Mishra Jiri Militky Miroslava Pechociakova Muhammad Tayyab Noman 《Fibers and Polymers》2016,17(10):1675-1686
Composites based on pure Basalt and Basalt/Jute fabrics were fabricated. The mechanical properties of the composites such as flexural modulus, tensile modulus and impact strength were measured depending upon weave, fiber contents and resin. Dynamic mechanical analysis of all composites were done. From the results it is found that pure basalt fiber combination maintains higher values in all mechanical tests. Thermo-gravimetric (TG/DTG) composites showed that thermal degradation temperatures of composites shifted to higher temperature regions compared to pure jute fabrics. Addition of basalt fiber improved the thermal stability of the composite considerably. Scanning electron microscopic images of tensile fractured composite samples illustrated that better fiber-matrix interfacial interaction occurred in hybrid composites. The thermal conductivity of composites are also investigated and thermal model is used to check their correlation. 相似文献
18.
The physical and mechanical characteristics of hollow polyester fibres were compared with solid polyester fibres in order
to establish their processing behaviour and performance characteristics. The effects of hollow fibres on fabric properties
were investigated by using microscopy and tests of tensile and bursting strength, pilling, abrasion resistance, water vapour
permeability, and handle. The results show that tensile strength of hollow polyester fibres and yarns are negatively affected
by the cavity inside the fibre. Hollow fibres also have higher stiffness and resistance to bending at relaxed state. Fabrics
made from hollow polyester/wool blends and pure wool fabrics show three distinguishable steps in pilling. During pilling,
hollow fibres break before being pulled fully out of the structure, leading to shorter protruding fibres. Microscopy studies
showed that the breakdown of hollow fibres started during entanglement by splitting along the helical lines between fibrils.
KES results showed that the friction between fibres and the fibre shape are the most important parameters that determine the
fabric low stress mechanical properties. However, in some aspects, the hollow structure of the fibre does not have a significant
effect. 相似文献
19.
The effect of spinning parameters on core-spun yarns properties manufactured using three-strand modified method (TSMM) was analyzed. Of the various spinning parameters, strand spacing, yarn linear density and yarn twist have a crucial effect on core-spun yarn properties. To achieve the objectives of this research, general physical properties of core-spun yarns together with existing standards were thoroughly studied. First of all, the strand spacing and yarn linear density were optimized. Afterwards, the effects of variation of yarn twist and sheath roving linear density on core-spun yarns properties were investigated. Finally, the physical and mechanical properties of TSMM yarns were compared with those of siro and conventional ring core-spun yarns counterparts. It was found that, the best strand spacing and yarn linear density to produce core-spun yarns are 8 mm and 45 tex, respectively. Results showed that, tenacity of TSMM yarns increases up to a certain twist level beyond which it reduces. The result confirmed that 45 tex yarns produced by three rovings of the same count are superior with regards to tenacity and hairiness. The optimized yarns produced by three-strand modified method enjoy superior physical and mechanical properties in comparison to the ring and siro core-spun yarns. 相似文献
20.
R. Bagherzadeh M. Montazer M. Latifi M. Sheikhzadeh M. Sattari 《Fibers and Polymers》2007,8(4):386-392
In order to impart barrier properties against water and microorganisms on breathable three dimensional spacer fabrics as medical
or technical textiles, fabric samples were treated with two water repellent agents and a quaternary ammonium salt namely cetyltrimethylammonium
bromide (CTAB), using pad-dry-cure method. Two different water repellent agents based on hydrocarbon and acrylic copolymer
were used. The water repellent property of samples was tested by Bundesmann and contact angle tests. Antimicrobial activity
of samples was analyzed quantitatively according to AATCC 100. Simultaneous finishing of samples was done with 3 % CTAB and
4 % fluoroalkyl acrylic copolymer. To study the effect of various treatments on comfort related properties, air and water
vapor permeability, water repellency and compression were measured. The results showed that the antimicrobial and water repellent
spacer fabrics can be achieved applying selected material without significant changes on their comfort properties. Also a
regression model was presented to predict the water vapour permeability of knitted spacer fabrics based on course density
(CPC) changing. 相似文献