Application of Additional Coating for Conductive Yarns Protection against Washing

2018 ◽  
Vol 762 ◽  
pp. 396-401 ◽  
Author(s):  
Natalija Baribina ◽  
Ilze Baltina ◽  
Alexander Oks
Keyword(s):  
Electrical Resistance ◽  
Negative Impact ◽  
Water Repellent ◽  
Electrically Conductive ◽  
Resistance Increase ◽  
Silicone Coating ◽  
Smart Textile ◽  
Increase Rate ◽  
Conductive Yarns ◽  
Common Problems

The conductive yarn is an essential component of the smart textile making the product light and comfortable to wear. Nevertheless, one of the most common problems is care that limits the use of the product. Application of additional coating to the yarn renders it water-repellent properties and allows reduction of the negative impact of water on its performance. During the research additional coatings were applied to conductive yarns, with the aim of minimizing electrical resistivity changes caused by washing cycles. Two types of coatings were applied to the yarns, they were washed and tested. The article describes changes in the electrical resistance of different conductors depending on the linear density of the yarn, the type of coating applied and the number of washing cycles. The electrical resistance of electrically conductive yarns increases with washing until they become non-conductive. The electrical resistance of non-textured yarns increases more slowly and the smaller increase is observed in thick yarns. The water-repellent silicone coating applied to yarns reduces the electrical resistance increase rate and the yarns retain their conductivity over more washing cycles.

scholarly journals The Impact of Elongation on Change in Electrical Resistance of Electrically Conductive Yarns Woven into Fabric

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3390
Author(s):  
Željko Knezić ◽  
Željko Penava ◽  
Diana Šimić Penava ◽  
Dubravko Rogale
Keyword(s):  
Mathematical Model ◽  
Electrical Resistance ◽  
Electrically Conductive ◽  
Textile Materials ◽  
Measurement Results ◽  
Conductive Yarns ◽  
Yarn Count ◽  
As Relationship ◽  
The Impact ◽  
The Mathematical Model

Electrically conductive yarns (ECYs) are gaining increasing applications in woven textile materials, especially in woven sensors suitable for incorporation into clothing. In this paper, the effect of the yarn count of ECYs woven into fabric on values of electrical resistance is analyzed. We also observe how the direction of action of elongation force, considering the position of the woven ECY, effects the change in the electrical resistance of the electrically conductive fabric. The measurements were performed on nine different samples of fabric in a plain weave, into which were woven ECYs with three different yarn counts and three different directions. Relationship curves between values of elongation forces and elongation to break, as well as relationship curves between values of electrical resistance of fabrics with ECYs and elongation, were experimentally obtained. An analytical mathematical model was also established, and analysis was conducted, which determined the models of function of connection between force and elongation, and between electrical resistance and elongation. The connection between the measurement results and the mathematical model was confirmed. The connection between the mathematical model and the experimental results enables the design of ECY properties in woven materials, especially textile force and elongation sensors.

A Novel Solution of Monitoring Incontinence Status by Conductive Yarn and Advanced Seamless Knitting Techniques

2012 ◽  
Vol 7 (4) ◽  
pp. 155892501200700 ◽  
Author(s):  
Rong Liu ◽  
Shuxiao Wang ◽  
Terence T. Lao
Keyword(s):  
Care Provider ◽  
Electrical Resistance ◽  
Conductive Yarns ◽  
Wet Processing ◽  
Potential Applications ◽  
Stable Performance ◽  
Seamless Knitting ◽  
Intelligent Healthcare ◽  
Conductive Yarn ◽  
Product Dimension

This paper presents a novel solution for monitoring incontinence status through the design and development of the intelligent incontinence pants by the use of conductive yarns and incorporating advanced circular seamless knitting technology. The produced textile incorporates wire and electrodes by conductive yarn working with a siren system which can monitor, sense and alert the wearer and care provider on the incontinence status in real time so as to reduce the need for manual checking and minimize patient care workload. The engineered stitches, yarn materials, and unique seamless knitting techniques provide soft handling, special fabric mechanisms, and tactile comfort of the resulting product. The electrical resistance of knitted conductive yarn demonstrated a stable performance in wet processing. Fitting body trials were conducted to estimate product dimension and configuration. This study allows us to explore further the potential applications of conductive yarn and seamless knitting technology in bio-functional and intelligent healthcare products and solutions through integrating multidisciplinary knowledge and techniques.

Regulation of Electrical, Thermal and Physical Properties of Composites Based on Carbon-Modified Portland Cement Materials

2020 ◽  
Vol 299 ◽  
pp. 264-269
Author(s):  
K.V. Tikhomirova ◽  
A.Yu. Semeykin
Keyword(s):  
Portland Cement ◽  
Thermal Characteristics ◽  
Water Repellent ◽  
Mechanical And Thermal Properties ◽  
Cement Composites ◽  
Carbon Filler ◽  
Electrically Conductive ◽  
Conductive Phase ◽  
Carbon Fillers ◽  
Adhesion Work

The article discusses aspects of the production and use of composites based on carbon-filled cement matrices. It is shown that the main problem in the technology of such composites is the regulation of the processes of structure formation and uniform distribution of the electrically conductive phase throughout the volume, to ensure stable electrical characteristics of the material. A method for solving the problem of improving the physical, mechanical and thermal properties of carbon-filled Portland cement composites by regulating the surface properties of carbon fillers, in order to reduce their concentration in the composite and the content of the aqueous phase, is proposed. It is shown that the modification of the carbon filler surface using the water-repellent agent PMS-20 reduces the adhesion work at the interface, which makes it possible to reduce the concentration of the electrically conductive phase in the composite and improve its physical, mechanical and thermal characteristics.

Electrostatic grafting of graphene onto polyamide 6,6 yarns for use as conductive elements in smart textile applications

2020 ◽  
Vol 44 (18) ◽  
pp. 7591-7601
Author(s):  
Milad Asadi Miankafshe ◽  
Tariq Bashir ◽  
Nils-Krister Persson
Keyword(s):  
Textile Industry ◽  
Manufacturing Method ◽  
Smart Textile ◽  
Conductive Yarns ◽  
Multifilament Yarns

Electrostatic graphene-grafted conductive yarns were prepared based on a scalable manufacturing method using conventional polyamide 6,6 (PA 6,6) multifilament yarns, common in the textile industry.

The psychological effects of unmarried women “a field study on a sample of unmarried women in Algeria”

2017 ◽  
Vol 41 (S1) ◽  
pp. s902-s902
Author(s):  
L. Fekih ◽  
B. Mounis
Keyword(s):  
Psychological Stress ◽  
Negative Impact ◽  
Self Esteem ◽  
Professional Status ◽  
Self Confidence ◽  
Common Problems ◽  
Competing Interest ◽  
The Impact ◽  
Late Stages ◽  
Confidence Scale

BackgroundThe present research was designed to determine the psychological stress as experienced by unmarried women in the education sector, and how to help them to discover the meaning of their presence in the framework, innovation and achievement, art, science, comprehension, love and adaptation in life.AimThis research aims to identify the various problems and mental disorders that unmarried women suffering from, and to determine the differences between unmarried women in terms of the psychological problems resulting from “unmarried” in: ages, kind and professional status.MethodThe method used in this research is purely descriptive following the collected data from the sample of 200 unmarried women. The tools that were used in this research as follow: Self-Confidence Scale, Psychological Stress Scale, “List of Information Collection for unmarried women”; we proceeded with some statistical techniques.ResultsThe findings of this research were:– emotional problems are the most common problems experienced by unmarried women;– the present study indicates the presence of depressive symptoms in 17%, which can evolve toward psychotic depression as dysthymia (loss of interest in daily activities, hopelessness, low self-esteem, self-criticism, trouble concentrating and trouble making decisions, effectiveness and productivity, avoidance of social activities, feelings of guilt and worries over the past, insomnia…);– the impact of unmarried on late stages have more negative impact, and psychological effect on them was more severe and the greatest harm.ConclusionThe advancement of women in the age without marriage or “unmarried women” is origin of psychological stress and low self-confidence.Dissclosure of interestThe authors have not supplied their declaration of competing interest.

Electromechanical analysis of length-related resistance and contact resistance of conductive knitted fabrics

2012 ◽  
Vol 82 (20) ◽  
pp. 2062-2070 ◽  
Author(s):  
Li Li ◽  
Song Liu ◽  
Feng Ding ◽  
Tao Hua ◽  
Wai Man Au ◽  
...  
Keyword(s):  
Contact Resistance ◽  
Electrical Resistance ◽  
Tensile Force ◽  
Standard Errors ◽  
Knitted Fabrics ◽  
High Coefficient ◽  
Proposed Model ◽  
Conductive Yarns ◽  
Relationship Of ◽  
The Relationship

Conductive fabrics usually exhibit two types of electrical resistance: the length-related resistance and contact resistance. The length-related resistance increases with the applied extensile force, whereas the contact resistance decreases with the contact force. The resistance of conductive knitted fabrics could be modeled by the superposition of the length-related resistance and contact resistance. Three experiments were conducted to investigate the resistance of conductive yarns: two overlapped conduct yarns and conductive knitting stitches under unidirectional extensile forces, respectively; and the corresponding empirical equations were developed. The relationship of the resistance, tensile force, fabric length and width were established. The fitting curves with high coefficient of determinations (>0.94) and low standard errors (<0.18) given by the modeling equations were achieved. Therefore, the proposed model could be used to compute the resistance of the conductive knitting fabrics under unidirectional extension.

Electrically Conductive Fibers/Yarns with Sensing Behavior from PVA and Carbon Black

2011 ◽  
Vol 462-463 ◽  
pp. 18-23 ◽  
Author(s):  
P. Xue ◽  
Xiao Ming Tao ◽  
Keun Hoo Park
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Morphological Characteristics ◽  
Processing Technique ◽  
Wet Spinning ◽  
Coating Process ◽  
Textile Processing ◽  
Electrically Conductive ◽  
Conductive Yarns ◽  
Conductive Fibers

In this study, electrical conductive yarns were prepared by wet-spinning technique and a physically coating process. Carbon black (CB) was used to make the fiber gaining electrical conductivity. The electrical conductivity and morphological characteristics of the developed conductive fibres were studied and compared. The results show that linear resistivity of the produced conductive yarns ranges from 1 to a few hundred kΩ per centimeter, mainly depending on processing technique and substrate fibers. It is also shown that the physically coating processes will not significantly affect the mechanical properties of the fibers and yarns. These conductive yarns are lightweight, durable, flexible, and cost competitive; and able to be crimped and subjected to textile processing without any difficulty.

scholarly journals Study of the Contact Resistance of Interlaced Stainless Steel Yarns Embedded in Hybrid Woven Fabrics

2017 ◽  
Vol 17 (2) ◽  
pp. 170-176 ◽  
Author(s):  
Simona Vasile ◽  
Frank Deruck ◽  
Carla Hertleer ◽  
Alexandra De Raeve ◽  
Thomas Ellegiers ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Contact Resistance ◽  
Significant Influence ◽  
Statistical Models ◽  
Electrical Resistance ◽  
Contact Point ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Conductive Yarns ◽  
Weave Pattern

Abstract The contact resistance of two interlacing electro-conductive yarns embedded in a hybrid woven fabric will constitute a problem for electro-conductive textiles under certain circumstances. A high contact resistance can induce hotspots, while a variable contact resistance may cause malfunctioning of the components that are interconnected by the electro-conductive yarns. Moreover, the contact robustness should be preserved over time and various treatments such as washing or abrading should not alter the functioning of the electro-conductive textiles. The electrical resistance developed in the contact point of two interlacing electro-conductive yarns is the result of various factors. The influence of diameter of the electro-conductive stainless steel yarns, the weave pattern, the weft density, and the abrasion on the contact resistance was investigated. Hybrid polyester fabrics were produced according to the design of experiments (DoE) and statistical models were found that describe the variation of the contact resistance with the selected input parameters. It was concluded that the diameter of the stainless steel warp and weft yarns has a statistically significant influence on the contact resistance regardless of the weave. Weft density had a significant influence on the contact resistance but only in case of the twill fabrics. Abrasion led to an increase in contact resistance regardless of the weave pattern and the type of stainless steel yarn that was used. Finally, a combination of parameters that leads to plain and twill fabrics with low contact resistance and robust contacts is recommended.

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