广角机织物的织造工艺及其偏轴拉伸力学性能

为开发适用于不同应用领域的产业用纺织品,在对原有普通剑杆织机改进的基础上,探讨了广角机织物的织造工艺,织造了经纱和纬纱夹角为120°的涤/棉平纹广角机织物。借助万能材料试验机研究了普通涤/棉正交织物和广角机织物不同偏轴方向的拉伸力学性能,获得了其应力-应变曲线和特征值变化规律,并分析了其变形及失效模式。结果表明:对于普通正交机织物和广角机织物,其拉伸断裂强力均呈现出明显的极轴特性;在断裂强力相同的情况下,与普通正交机织物相比,广角机织物纬向的断裂伸长率提高了30%,经、纬向弹性模量分别提高了42%和79%,展现出优异的强度和变形特征。

Weaving process and off-axial tensile mechanical properties of wide-angle woven fabric

In order to develop technical textiles suitable for different application fields, based on the modifying conventional rapier loom, this research investigated a novel weaving process for weaving a wide-angel polyester/cotton plain woven fabric whose warp and weft yarns were at an angle of 120°. Tensile mechanical property of both ordinary orthogonal and wide-angel polyester/cotton woven fabrics were tested in different directions by universal material testing machine, receiving data on their stress-strain curves with key characteristics and deformation and failure modes. It is concluded that for the normal orthogonal fabric and the wide-angel woven fabric, their tensile fracture strengths have obvious polar axial feature. For the same tensile strength, the wide-angel woven fabric demonstrates a 30% higher breaking elongation in weft direction than the normal orthogonal fabric, and the elasticity modulus along the warp and weft increases by 42% and 79% respectively, presenting an excellent strength and deformation feature.