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Article

Structural Parameters Affecting Electrothermal Properties of Woolen Knitted Fabrics Integrated with Silver-Coated Yarns

by 1,2, 1,2,* and 2
1
College of Textiles, Donghua University, 2999 North Renmin Road, Songjiang District, Shanghai 201620, China
2
Engineering Research Center of Technical Textile, Ministry of Education, Shanghai 201620, China
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(10), 1709; https://doi.org/10.3390/polym11101709
Received: 24 September 2019 / Revised: 15 October 2019 / Accepted: 15 October 2019 / Published: 18 October 2019
(This article belongs to the Special Issue Polymers for Energy Storage and Conversion)
Recently, more and more researchers have focused on electrical textiles that can provide or convert energy to facilitate people’s lives. Knitting conductive yarns into ordinary fabrics is a common way for electrical textiles to transmit heat or electrical signals to humans. This paper is aimed at studying the resistance values and temperatures of electrothermal knitted conductive fabric (EKCF) subjected to certain voltages over time. Six types of EKCFs with structural differences were fabricated using a computerized flat knitting machine with intarsia technology. Uniform samples 10 × 10 cm in size were made from wool, as were two different specifications of silver-coated conductive yarns. The wool yarn and one silver-coated yarn were mixed to knit a resistance area 2 × 2 cm in size in the center of the EKCF to observe heating behaviors. The experiment results showed that when the EKCFs were subjected to certain voltages over time, the resistance values of the resistance area increased over a short time and then gradually decreased, and the temperature gradually increased in the first 1000 s and tended toward stability after a certain period of time. The structural coefficient κ between different knitted structures (which predicted the thermal properties of different EKCFs subjected to different voltages) was analyzed. These results are of great significance for predicting the electrothermal performance of EKCFs with different knitted structures. On the basis of these results, an optimized knitted structure was selected as the best EKCF for wearable textiles, and the findings contribute to the field of technological and intelligent electrothermal garments and related products. View Full-Text
Keywords: electrothermal properties; resistance values; electrothermal knitted conductive fabric; knitted structures electrothermal properties; resistance values; electrothermal knitted conductive fabric; knitted structures
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MDPI and ACS Style

Sun, K.; Liu, S.; Long, H. Structural Parameters Affecting Electrothermal Properties of Woolen Knitted Fabrics Integrated with Silver-Coated Yarns. Polymers 2019, 11, 1709. https://doi.org/10.3390/polym11101709

AMA Style

Sun K, Liu S, Long H. Structural Parameters Affecting Electrothermal Properties of Woolen Knitted Fabrics Integrated with Silver-Coated Yarns. Polymers. 2019; 11(10):1709. https://doi.org/10.3390/polym11101709

Chicago/Turabian Style

Sun, Kexia, Su Liu, and Hairu Long. 2019. "Structural Parameters Affecting Electrothermal Properties of Woolen Knitted Fabrics Integrated with Silver-Coated Yarns" Polymers 11, no. 10: 1709. https://doi.org/10.3390/polym11101709

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