Spinning Process and Mechanical Properties Analysis of PTT Filament Core Spun Yarn

2011 ◽  
Vol 239-242 ◽  
pp. 1207-1210
Author(s):  
Yuan Xue ◽  
En Long Yang
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Elastic Recovery ◽  
Staple Fiber ◽  
Ring Spinning ◽  
The Core ◽  
Outer Sheath ◽  
Spun Yarn ◽  
Two Component ◽  
Spinning Process

The two component filament/staple fiber core-spun yarn is spun on FA506 ring spinning frame with PTT filament as interlaced yarn and Tencel staple fiber as outer sheath. The spinning process and process parameters were analyzed. The morphology, mechanical property and wear-resisting property of two component core-spun yarn were tested. Results indicate that elastic recovery rate of core-spun is up to 90.6%; broken strength is up to 20 cN/tex after boiling water treatment. The core-spun yarn can be used as a new kind of knitting yarn for sweater.

Analysis of Process and Properties of Stainless Steel Filament Wrapped Yarn Based on Multi-Axial Ring Spinning

2011 ◽  
Vol 332-334 ◽  
pp. 743-746
Author(s):  
Cheng Liang Deng ◽  
Zhao Qun Du ◽  
Wei Dong Yu
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Process Optimization ◽  
Steel Wire ◽  
Ring Spinning ◽  
Excellent Performance ◽  
The Core ◽  
Axial Ring ◽  
Spinning Process ◽  
Core Yarn

A new spinning method was presented to spin three-axial stainless steel filament wrapped yarn by modified ring-spinning, where the stainless steel filament was set as the core yarn and the nylon filament for decoration wrapping the stainless steel filament in the fields of the fabric for Shielding application. A set of process parameters was obtained by the ring spinning frame improvement and spinning process optimization, which realized to spin nylon filament wrapped stainless steel filament yarn. Moreover, the structure, and tensile mechanical properties were measured on the wrapped yarns. The results show that the process can spin stainless steel wire wrapped yarn and acquire the excellent performance of the yarn.

scholarly journals Preparation of the polyester/cotton composite yarn with alternating segmented structure and interval color via a promising physical spinning approach

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Wei Wei ◽  
Qinglun Tang ◽  
Hengxing Tang ◽  
Jun Chen ◽  
Kun Yan ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Structural Change ◽  
Staple Fiber ◽  
Ring Spinning ◽  
Visual Effects ◽  
Systematic Analysis ◽  
Blend Ratio ◽  
Composite Yarn ◽  
Color Sense ◽  
Spinning Process

AbstractHerein, a novel kind of composite yarn with alternating segmented structure and interval color has been prepared based on a ring spinning approach. By adjusting the relative motion and blend ratio of the colored polyester filament and natural cotton staple fiber in yarn spinning process, a series of composite yarns were designed and prepared with various segmented structure and cyclical change of the distinct colors. The blend ratio was found to strongly influence on the segment frequency and yarn performance, achieving an improved mechanical property and yarn performance. A color systematic analysis indicated that the combination of alternating structural change induced interval color sense and gradient at the merged regions would lead to an enhanced stereoscopic visual effect of the composite yarns. Moreover, the composite yarns were confirmed to have an excellent weavability and able to endow different patterns and visual effects to the textiles. Thus, considering of the above advantages and multifunctionalities, this work should spur great possibilities for dyeing industry with the promising physical spinning method.

scholarly journals Mechanical and FR Properties of Different Ratios of Cotton/Polysulfonamide (PSA) Core Spun and Blended Yarns

2014 ◽  
Vol 9 (4) ◽  
pp. 155892501400900
Author(s):  
Lloyd N. Ndlovu ◽  
Cunchao Han ◽  
Chongwen Yu
Keyword(s):  
Synthetic Fiber ◽  
Fire Retardancy ◽  
Ring Spinning ◽  
Research Focus ◽  
Chemically Modified ◽  
The Core ◽  
Blended Yarn ◽  
Spun Yarn ◽  
Cotton Yarns ◽  
Research Institute

The textile and its allied industries have had its research focus on ways of alleviating the risks and losses posed by uncontrolled fires. Textiles have been chemically modified to impart flame/fire retardancy (FR) properties and also studies have been done on inherently FR fibers. This research focuses on Polysulfonamide (PSA) fiber, an inherently FR fiber developed by Shanghai Textile Research Institute and Shanghai Synthetic Fiber Research Institute. The purpose of this research is to study ways of incorporating PSA into yarns that will utilize the benefits of the PSA fiber while compensating for its limitations. The 100% PSA yarn and five different percentage variations of PSA/cotton blended yarns were produced by ring spinning. The blending methods were intimate blending and core spinning, with cotton yarns being used as core and PSA fibers as sheath. The tensile, evenness, hairiness and FR properties of these yarns together with the blending methods were studied and compared. The results showed that the blended yarn yielded better tensile and hairiness properties whereas the core spun yarn had better evenness and flame retardancy properties.

Response Surface Regression Models for Prediction of Ring Spun Yarn Properties

2015 ◽  
Vol 19 (4) ◽  
pp. 1-10
Author(s):  
Hanen Ghanmi ◽  
Adel Ghith ◽  
Tarek Benameur
Keyword(s):  
Mechanical Properties ◽  
Response Surface ◽  
Regression Models ◽  
High Volume ◽  
Statistical Software ◽  
Spun Yarn ◽  
Yarn Properties ◽  
Ring Spun Yarn ◽  
Spinning Process ◽  
Response Surface Regression

In this study, the response surface methodology is used to predict the mechanical properties of yarn, their unevenness and hairiness by using the high-volume instrument (HVI) properties of raw cotton and the parameters of the spinning process. Therefore, five different blends of cotton are processed and spun into ring yarns (Nm13, Nm19, Nm 21, Nm31 and Nm37). Each count is spun at five twist levels (450, 500, 650, 750 and 850 trs/m). The models that are developed by using response surface regression with many iterations on a Minitab16 statistical software predict very well the different yarn properties since the R2 values obtained are very important. In addition, these models show that metric number and twist have the highest effect on the four studied parameters

scholarly journals THE EFFECT OF MOISTURE ON THE MECHANICAL PROPERTIES OF COMPACTED EXFOLIATED VERMICULITE

2014 ◽  
Vol 6 (3) ◽  
pp. 124-130
Author(s):  
Soufiane Belhouideg ◽  
Manuel Lagache
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Elastic Modulus ◽  
Small Group ◽  
Compression Test ◽  
Elastic Recovery ◽  
Compression Tests ◽  
Relative Moisture ◽  
Lamella Structure ◽  
Different Levels

Vermiculite refers to a small group of minerals resembling the lamella structure of the micas. Its can exfoliated chemically or thermally. Exfoliated vermiculite may be compressed and used in expanding gaskets; seals… The mechanical properties of compacted exfoliated vermiculite (CEV) strongly depend on the moisture. In this paper, the mechanical property of CEV is investigated by compression test, performed on samples under different levels of relative moisture. The compression tests are performed on samples respectively in longitudinal and transverse directions with respect to compaction axis. When comparing the mechanical property of CEV between longitudinal and transverse directions, an anisotropic behaviour is found in elastic modulus. As the relative moisture increases, the elastic modulus, failure stress and elastic recovery decrease.

scholarly journals Analysis of yarn properties in the superconducting magnetic bearing-based ring spinning process

2017 ◽  
Vol 88 (22) ◽  
pp. 2624-2638 ◽  
Author(s):  
Mahmud Hossain ◽  
Anwar Abdkader ◽  
Chokri Cherif
Keyword(s):  
Research Work ◽  
Comparative Investigation ◽  
Magnetic Bearing ◽  
Ring Spinning ◽  
Spun Yarn ◽  
Yarn Properties ◽  
Ring Spun Yarn ◽  
Spinning Process ◽  
Yarn Tenacity ◽  
Superconducting Magnetic Bearing

The fundamental research work about the superconducting magnetic bearing (SMB) twisting system provides huge potential to eliminate the most important limitation of productivity, that is, the friction in the ring traveler system of the existing ring spinning process. As a continuity of the research work, the functionality of the SMB spinning has been carried out with different angular spindle speeds, yarn counts, and materials in order to determine the influence of the SMB technology. The current paper presents a comparative investigation of the yarn properties, such as yarn tenacity, yarn elongation, yarn evenness, microscopic views, etc., between conventional and SMB ring spun yarn. The intensive analysis confirms that the SMB system enables one to produce satisfactory yarn quality similar to that of conventional ring spun yarn up to 15,000 rpm. The influence of conventional and SMB spinning processes on yarn properties has been further analyzed statistically using an analysis of variance.

Effects of spinning process and core yarn contents on yarn shape retention

2019 ◽  
Vol 32 (4) ◽  
pp. 457-469
Author(s):  
Wei Yanhong ◽  
Xinjin Liu ◽  
Xuzhong Su ◽  
Zhao Zhimin
Keyword(s):  
Content Type ◽  
Yarn Strength ◽  
The Core ◽  
Yarn Twist ◽  
Twist Factor ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Spinning Process ◽  
Shape Retention ◽  
Core Yarn

Purpose In order to develop high shape retention yarn and investigate the effects of spinning process and core yarn contents on the shape retention of yarn, in this paper, three kinds of yarns, JC/T400 18.5tex (55.6dtex) core-spun yarn, JC/T400 18.5tex (44.4dtex) core-spun yarn and JC18.5tex pure cotton yarn were spun by using the complete condensing Siro-spinning technology. The paper aims to discuss these issues. Design/methodology/approach In this paper, the core-spun yarns were spun by using the complete condensing spinning and Siro-spinning technology. Two key spinning processes, yarn twist factor and core yarn pre-draft ratio, were optimized by using the orthogonal test method first. Then, via the variable control method, the position of the core yarn, the position of the bell mouth and the center distance between two bell mouths were optimized, respectively, and corresponding optimal spinning process of the three yarns was determined. Finally, the yarns were spun under the optimal process, and the performance of the spun yarns was tested and compared. Findings Results show that the yarn twist factor affects yarn strength and hairiness, the position of bell mouth affects the evenness and hairiness of the yarn mainly, and the position of the core yarn affects the coverage and hairiness of the yarn. For the Z-twist spinning, the core yarn enters the front roller from the left side of two strands center, which is beneficial to improve the covering effect of core yarn, and reduce the pilling phenomenon of the yarn. The contents of core yarn affect indicators of the yarn shape retention, such as yarn strength, elastic recovery and abrasion resistance. Originality/value The shape retention of yarns affects the shape retention of fabrics, and the production of yarn with high shape retention is a key step in achieving shape retention of fabrics. At present, there are little studies on the shape retention of yarns, most researchers shave focused on shape retention of fabrics. Using the complete condensing Siro-spinning method to spin the core-spun yarn can improve the quality of the yarn. Compared with traditional ring-spinning yarns, the addition of the core yarn can improve the shape retention of the yarn.

Improved Method of Producing a Cotton Covered/Polyester Staple-Core Yarn on a Ring Spinning Frame

1992 ◽  
Vol 62 (1) ◽  
pp. 21-25 ◽  
Author(s):  
A. P. S. Sawhney ◽  
K. Q. Robert ◽  
G. F. Ruppenicker ◽  
L. B. Kimmel
Keyword(s):  
New Method ◽  
Cotton Yarn ◽  
Fibrous Materials ◽  
Improved Method ◽  
Ring Spinning ◽  
Axial Segregation ◽  
The Core ◽  
Spun Yarn ◽  
Core Yarn

A new, better method of producing cotton covered/polyester staple-core yarn on a modified ring spinning frame is described. The method uses the concept of twisting a “sandwich” formed by two drafted strands of cotton (rovings) on the outside and a drafted strand of polyester on the inside, thus using a total of three rovings. The earlier method used only one cotton roving and one polyester roving [10]. The new method is simple and easily adaptable to the existing spinning frames; piecing of broken ends is also easy. A 67/33 cotton/high tenacity polyester staple-core yarn produced by the new spinning system is evaluated. The core of the yarn is almost totally covered with a firm sheath of cotton, giving the an appearance of a 100% cotton spun yarn. Compared with conventional yarns of 100% cotton and 67/33 cotton/polyester intimate blends, the core yarn is significantly stronger than the equivalent 100% cotton yarn and the intimate blend yarn of regular tenacity polyester. These yarns may be useful where a co-axial segregation of different fibrous materials is important or critical. The new staple-core spinning technology can be applied to produce yarns from a variety of core and sheath materials, such as Kevlar, PBI, Nomex, cotton, and wool, among others.

Mechanical Property Studies on Flax Fiber Reinforced Basalt Powder Filled Polyester Composite

2020 ◽  
Vol 13 ◽  
Author(s):  
V. Arumugaprabu ◽  
K.Arun Prasath ◽  
S. Mangaleswaran ◽  
M. Manikanda Raja ◽  
R. Jegan
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Natural Fiber ◽  
Tensile Load ◽  
Flax Fiber ◽  
Flexural Properties ◽  
Weight Percentage ◽  
Tensile Impact ◽  
Polyester Composite ◽  
Additional Support

: The objective of this research is to evaluate the tensile, impact and flexural properties of flax fiber and basalt powder filled polyester composite. Flax fiber is one of the predominant reinforcement natural fiber which possess good mechanical properties and addition of basalt powder as a filler provides additional support to the composite. The Composites are prepared using flax fiber arranged in 10 layers with varying weight percentage of the basalt powder as 5 wt.%, 10 wt.%, 15 wt.%, 20 wt.%, 25 wt.% and 30 wt.% respectively. From the results it is inferred that the composite combination 10 Layers of flax / 5 wt.%, basalt Powder absorbs more tensile load of 145 MPa. Also, for the same combination maximum flexural strength is about 60 MPa. Interestingly in the case of impact strength more energy was absorbed by 10 layers of flax and 30 wt.% of basalt powder. In addition, the failure mechanism of the composites also discussed briefly using SEM studies.

scholarly journals Spatial segregation of mixed-sized counterions in dendritic polyelectrolytes

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
J. S. Kłos ◽  
J. Paturej
Keyword(s):  
Electrostatic Interactions ◽  
Spatial Separation ◽  
Excluded Volume ◽  
The Core ◽  
Bjerrum Length ◽  
Two Component ◽  
Conformational Properties ◽  
Dynamics Simulations ◽  
Two Parameters ◽  
Swelling Factor

AbstractLangevin dynamics simulations are utilized to study the structure of a dendritic polyelectrolyte embedded in two component mixtures comprised of conventional (small) and bulky counterions. We vary two parameters that trigger conformational properties of the dendrimer: the reduced Bjerrum length, $$\lambda _B^*$$ λ B ∗ , which controls the strength of electrostatic interactions and the number fraction of the bulky counterions, $$f_b$$ f b , which impacts on their steric repulsion. We find that the interplay between the electrostatic and the counterion excluded volume interactions affects the swelling behavior of the molecule. As compared to its neutral counterpart, for weak electrostatic couplings the charged dendrimer exists in swollen conformations whose size remains unaffected by $$f_b$$ f b . For intermediate couplings, the absorption of counterions into the pervaded volume of the dendrimer starts to influence its conformation. Here, the swelling factor exhibits a maximum which can be shifted by increasing $$f_b$$ f b . For strong electrostatic couplings the dendrimer deswells correspondingly to $$f_b$$ f b . In this regime a spatial separation of the counterions into core–shell microstructures is observed. The core of the dendrimer cage is preferentially occupied by the conventional ions, whereas its periphery contains the bulky counterions.

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