【摘要】 针对碳纤维在二维编织过程中不耐扭折、易受损断纱的问题,通过拉伸性能实验和导纱瓷眼折角磨损实验分析了碳纤维复丝的可编织性能,探讨了纱管在缠绕过程中应注意的问题。在24锭二维编织机上编织了8种不同工艺参数的碳纤维管状编织物,研究了编织工艺对织物外观起毛情况及力学性能的影响。结果表明:碳纤维复丝的断裂强度为86.39 c N/tex,断裂伸长率为1.12%,断裂强度远高于其他纤维,但延伸性差;影响碳纤维复丝在导纱瓷眼处折角磨损程度的因素依次为牵引力、折角、编织速度;在编织纱线根数不变的情况下,随编织节距的减小,管状编织物的面密度逐渐增加,起毛现象严重,编织物的拉伸断裂强力降低。更多还原

【Abstract】 Aiming at the problem that the carbon fiber breaks and damages easily due to brittleness of the yarns during 2-D braiding,the processing performance of carbon fiber filament yarn was analyzed by tensile test and homemade yarn porcelain eye corner wear test. Some precautions during winding yarn tube were discussed. Several tubular fabrics of different technological parameters were braided on two-dimensional braiding machine with 24 spindles. The influences of the braiding technology on the appearance and mechanical properties of 2-D braided fabrics were studied. The experimental results show that the breaking strength of carbon fiber is 86. 39 c N/tex,and much higher than of other fibers. The elongation at break is1. 12%,but the extensibility is poor. The factors influencing the wear degree of carbon fiber in the guide yarn eye sequentially are take-away force,guide yarn angle and braiding speed. Under the condition that the number of braided yarns is constant,the braiding pitch decreases,mass per unit area of the tubular fabric increases,the pilling is serious,and the tensile fracture strength of the fabric decreases.更多还原