Cai Yujie, Li Zewen, Wang Bin, Xu Chao, Tian Xing, Quan Fengyu
State Key Laboratory of Bio-Fibers and Eco-Textiles, Institute of Marine Bio-based Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
Polymers (Basel). 2025 May 28;17(11):1497. doi: 10.3390/polym17111497.
As a natural fiber, cashmere is favored for its softness, finesse, and warmth. However, its poor flame-retardant properties seriously affect the safety of cashmere. Current flame-retardant treatments for cashmere tend to lead to heavy metal pollution and significantly reduce wearer comfort. In this work, natural and environmentally friendly calcium alginate fibers were blended with cashmere to obtain blended fibers. The blended fibers exhibited good hygroscopicity and softness. The incorporation of calcium alginate fibers enhanced the flame retardancy of the blends, and the LOI of the blended fibers reached 40.2 without smoldering. It was due to a stable CaO protective layer formed by Ca during combustion and the dense carbon layer with the decomposition intermediates of cashmere, which exerted a flame-retardant effect in the condensed phase. This study provided an eco-friendly approach to producing high-quality flame-retardant cashmere products.
作为一种天然纤维，羊绒因其柔软、精致和保暖性而备受青睐。然而，其较差的阻燃性能严重影响了羊绒的安全性。目前对羊绒的阻燃处理往往会导致重金属污染，并显著降低穿着者的舒适度。在这项工作中，将天然环保的海藻酸钙纤维与羊绒混纺以获得混纺纤维。混纺纤维表现出良好的吸湿性和柔软性。海藻酸钙纤维的加入提高了混纺物的阻燃性，混纺纤维的极限氧指数达到40.2且无阴燃现象。这是由于燃烧过程中钙形成了稳定的CaO保护层，以及与羊绒分解中间体形成的致密碳层，它们在凝聚相中发挥了阻燃作用。本研究为生产高质量的阻燃羊绒产品提供了一种环保方法。
