机织针织复合织物与多层双轴向纬编织物拉伸性能对比

选用玻璃纤维作经纱、纬纱和高强涤纶作针织纱分别编织机织针织复合(CWK)织物和多层双轴向纬编(MBWK)织物，测试两种织物的横向、纵向的拉伸性能，分析比较拉伸负荷和位移特征曲线。研究表明：在拉伸过程中，CWK织物MBWK织物均先由其中的经纱或纬纱，在较低的伸长下，承担较高的负荷，直至经纱或纬纱断裂，然后由针织结构，在较高的伸长下，承担较低的负荷，直至针织结构破坏；经纱和纬纱以交织形式衬入针织结构中，使得CWK织物的轴向的拉伸强度稍低于MBWK织物，但起到一定的“预牵伸”作用，可使针织纱对经纱和纬纱捆绑效果更好。

Comparison of tensile properties of co-woven-knitted fabric and multi-layered biaxial weft knitted fabric

To provide a reference for the application of the co-woven-knitted(CWK) fabric,the CWK fabric and multi-layered biaxial weft knitted(MBWK) fabric are produced with the same yarns and loop length,using glass filaments as inserted yarns and high tenacity polyester as stitch yarn.Tensile tests are carried out in the wale and course directions of the two fabrics,and their stress-strain curves are compared.The results revealed that axial tensile properties of the two fabrics have good similarity,inserted yarns bear high load in low elongation to failure,and then,the knitted structure commits the low load in high elongation until it damages.Interwoven between warp and weft yarns leads to large buckling of them,the strength of the CWK fabric is lower than that of the MBWK fabric,but the interwoven makes knitting yarn in a state of pre-draft,so that the knitting yarn has the role of better bundled on warp and weft.