Abstract: "Carbon fibers are one of the three leading superfibers today. However, carbon fibers are brittle and have limited elongation and deformation capabilities. During the weaving process, friction and bending from metal components, such as the reed and heald eyes, can easily lead to fuzz formation and fiber breakage in carbon fibers, thus affecting the performance of the fabric. Previously, scholars have studied sizing treatment to provide fibers with a smooth and complete sizing film, reducing the amount of fuzz or loose fibers on the surface of the fiber, and improving the weavability of the fiber. While sizing treatment can certainly enhance the performance of CF to a certain extent, the amount of sizing has a significant impact on the weavability of carbon fibers. Moreover, different types of carbon fibers require specific sizing agents with varying compositions and contents. Hence, this paper proposes a ""physical protection method"" to address the severe wear issue of carbon fibers during the weaving process by wrapping a fiber with excellent abrasion resistance around the surface of carbon fibers, thereby preventing direct contact between the carbon fibers and metal components such as reeds and heald eyes, and reducing the damage suffered by the carbon fibers. To effectively improve the weavability of carbon fibers, five kinds of core-spun yarns with different entanglement degrees were prepared by using ultra-high molecular weight polyethylene fibers as the outer fibers and carbon fibers as the core yarns, and the effects of entanglement degree on the wearable properties of the core-spun yarns were investigated, which included several wearable property evaluation indexes such as yarn evenness, mechanical properties, and abrasion resistance properties. The results showed that the tensile strength, hook strength and abrasion resistance of the core-spun yarns were significantly improved compared with those of the unwrapped carbon fibers. After selecting representative core-spun yarns and weaving them into two-dimensional and three-dimensional fabrics, and then thermally decomposing the ultra-high molecular weight polyethylene fibers on the surface of the core-spun yarns, the mechanical properties of the carbon fiber fabrics were significantly improved compared with those of the fabrics made of carbon fibers. The core-spun yarn prepared in this paper has good wear resistance, mechanical properties and yarn evenness, which can reduce the hairiness of carbon fiber in the weaving process and improve the woven property of carbon fiber, which provides reference for the preparation of quality carbon fiber fabrics."

Key words: "carbon fiber, core-spun yarn, woven properties, ultra-high molecular weight polyethylene fiber, mechanical property "

摘要： 为了有效改善碳纤维长丝的可织造性，以超高分子量聚乙烯纤维为包缠纤维，碳纤维为芯纱，制备了5种不同包缠度的包缠纱，考察了包缠度对碳纤维包缠纱的可织性能（条干均匀度、力学性能、耐磨性能等）的影响；然后在此基础上，选用代表性的包缠纱线织造成二维和三维织物，分析包缠与织造对织物中纤维力学性能的影响。结果表明：与未包缠碳纤维相比，包缠纱线的拉伸强度、钩接强力以及耐磨性能等可织性能评价指标有了明显的提高。与未包缠碳纤维织物中的经纱的力学性能相比，包缠织物及热分解后的包缠织物中的经纱力学性能损失程度明显下降。研究结果可为高性能碳纤维织物和包缠碳纤维织物的制备提供参考。

关键词: 碳纤维, 包缠纱, 可织性, 超高分子量聚乙烯纤维, 力学性能