This paper introduces the excellent characteristics of pearl fiber and its research progress, introduces several common pearl fiber preparation methods, including melt spinning and solution spinning, and analyzes the applicability and limitations of each method. Some functional pearl fiber and fabric products are also introduced. The healthcare mechanism of pearl fiber on the human body was discussed, especially in infrared health care, and the healthy and comfortable function of pearl fiber was discussed. It pointed out the significance of the development of pearl fiber to the research of fiber materials in China, and pearl fiber has broad market prospects and high research value.
With the development of electronic information technology and people's pursuit of a convenient life, intelligent and flexible wearable electronics have received more and more attention, and have achieved relevant research results. Conductive yarn, as the most basic flexible conductive textile material, the conductive yarn is widely used in intelligent wearable products. However, traditional textile materials are usually insulating materials and do not directly form conductive yarns and smart wearable products. This paper focuses on the preparation methods of conductive yarns by coating, spinning, and in situ polymerization, and the application research progress in wearable strain sensors, wearable supercapacitors and wearable electric heating devices. In addition, the convenience, comfort, washability and sensitivity required for wearable electronics are proposed to further optimise the flexible sensitivity and durability of conductive yarns and methods of combining textile materials with conductive materials are the main development directions for wearable flexible smart products.
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