Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2013 Mar 20;6(3):1072-1089.
doi: 10.3390/ma6031072.

Thermo-Mechanical Behavior of Textile Heating Fabric Based on Silver Coated Polymeric Yarn

Syed Talha Ali Hamdani  1 , Prasad Potluri  2 , Anura Fernando  3
Affiliations

Thermo-Mechanical Behavior of Textile Heating Fabric Based on Silver Coated Polymeric Yarn

Syed Talha Ali Hamdani et al. Materials (Basel). .

Abstract

This paper presents a study conducted on the thermo-mechanical properties of knitted structures, the methods of manufacture, effect of contact pressure at the structural binding points, on the degree of heating. The test results also present the level of heating produced as a function of the separation between the supply terminals. The study further investigates the rate of heating and cooling of the knitted structures. The work also presents the decay of heating properties of the yarn due to overheating. Thermal images were taken to study the heat distribution over the surface of the knitted fabric. A tensile tester having constant rate of extension was used to stretch the fabric. The behavior of temperature profile of stretched fabric was observed. A comparison of heat generation by plain, rib and interlock structures was studied. It was observed from the series of experiments that there is a minimum threshold force of contact at binding points of a knitted structure is required to pass the electricity. Once this force is achieved, stretching the fabric does not affect the amount of heat produced.

Keywords: antifreeze; elector-textile; heating; knitted; polymeric yarn; protective clothing; silver; thermo-mechanical behavior; wearable.

PubMed Disclaimer

Figures

Figure 1
Figure 1
Sketch of the arrangement of the silver yarn and the elastomeric yarn in the plain knitted heating fabric.
Figure 2
Figure 2
A binding point at the sinker loop of the knitted structure.
Figure 3
Figure 3
Flowchart for MatLab program.
Figure 4
Figure 4
Current vs. conducting yarn length for the silver yarn at 9 V.
Figure 5
Figure 5
Thermal images for (a) plain; (b) rib and (c) interlock structures at 3 V.
Figure 5
Figure 5
Thermal images for (a) plain; (b) rib and (c) interlock structures at 3 V.
Figure 6
Figure 6
Theoretical temperature profiles of plain knitted structure.
Figure 7
Figure 7
Comparison of silver yarn plain, rib and interlock structures at 3 V and 80 mm terminal separation.
Figure 8
Figure 8
Schematic diagrams of (a) plain; (b) 1 × 1 rib and (c) interlock knitted structure.
Figure 9
Figure 9
Comparison of Silver yarn, plain, rib and interlock structures at 9 V Sample size: 40 mm.
Figure 10
Figure 10
Change of temperature with respect to strain %.
Figure 11
Figure 11
Yarn path notations for plain (a) technical front and (b) technical back.
Figure 12
Figure 12
Knitted heating fabric with bus bars for electrical terminals.
See this image and copyright information in PMC

References

    1. Coyle S., Mitchell E., Ward T., May G., O’Connor N., Diamond D. Textile sensors for personalized feedback; Proceeding of ECIR2010 Workshop on Information Access for Personal Media Archives (IAPMA2010); Kildare, Ireland. 28 March 2010.
    1. Ghosh T.K., Dhawan A., Muth J.F. Formation of electrical circuits in textile structures. Intell. Text. Cloth. 2006:239–282.
    1. Parkova I., Vališevskis A., Kašurins A., Viļumsone A. Integration of Flexible Keypad into Clothing; Proceedings of 8th International Scientific and Practical Conference “Environment Technology Resources”; Rezekne, Latvia. 20–22 June 2011.
    1. Schwarz A., van Langenhove L., Guermonprez P., Deguillemont D. A roadmap on smart textiles. Text. Prog. 2010;42:99–180. doi: 10.1080/00405160903465220. - DOI
    1. Mather R.R. Intelligent textiles. Rev. Prog. Color. Relat. Top. 2001;31:36–41. doi: 10.1111/j.1478-4408.2001.tb00136.x. - DOI

LinkOut - more resources