Abstract
Flame-retardant (FR) workwear with good flame/heat protection and washing durability is significant in various fields like petrochemical industry, and there are fast growing needs and new requirements to develop FR yarns with superior flame-resistance, high strength, low hairiness and reasonable cost. However, current aramid or FR viscose yarns cannot well meet these requirements. Herein, by using a cost-effective mid-length fiber vortex yarn technology, this work developed a newly FR viscose/meta-aramid blended yarn with enhanced mechanical properties and flame-resistance, including tensile strength up to 14.4 cN/tex, elongation up to 7.8%, hairiness S3 value as low as 40, and limiting oxygen index value as high as 39.6%. The unique yarn structure of wrapped fiber-sheath and straight fiber-core was studied in terms of twist angle, twist factor, and core ratio in the yarn. Moreover, spinning trials were conducted to systematically learn influences of fiber proportion and spinning parameters, and a statistical model was established by response surface methodology to predict the structure and properties of blended yarn under certain FR viscose/aramid fiber ratio and spinning parameters, which can serve as a guide to manipulate the yarn properties as well as minimizing the fiber cost. This study proposes a cost-effective method to develop high-performance FR blended yarns, which will greatly promote the development of high value-added FR textiles.
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Acknowledgments
The authors wish to thank the Innovation and Technology Commission of Hong Kong SAR Government, The Hong Kong Research Institute of Textiles and Apparel, Upper Wealth (HK) Ltd, Wuxi Gaoshikang New Materials Technology Co., Ltd for funding support the project titled “Development of High Value-added Vortex Yarn and Fabrics with Enhanced Flame-resistance and Comfort” (Grant No. ITP/008/21TP).
Funding
This research was financially supported by Innovation and Technology Commission of Hong Kong SAR Government, The Hong Kong Research Institute of Textiles and Apparel, Upper Wealth (HK) Ltd, Wuxi Gaoshikang New Materials Technology Co., Ltd. (Grant No. ITP/008/21TP)
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All authors contributed to the experiments of this study and approved the final manuscript. BN wrote the main manuscript text. TH provided the idea, supervised this work, and revised the paper draft. BN and XT contribute equally to this work.
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Niu, B., Tian, X., Wong, M. et al. Toward high-performance FR viscose/meta-aramid blended yarns enabled by vortex spinning driven core-sheath assembly. Cellulose 30, 9829–9841 (2023). https://doi.org/10.1007/s10570-023-05466-4
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DOI: https://doi.org/10.1007/s10570-023-05466-4