摘要
设计了一种缝合机针旋转式单针缝合设备,研究了不同织物层厚度下两种机针运行方式对缝合复合材料拉伸性能的影响。结果表明,旋转式缝合机针与纤维间的摩擦程度高于直刺式;13层旋转式缝合复合材料的拉伸强度、模量和断裂伸长率高于直刺式缝合复合材料,25层直刺式缝合复合材料的拉伸强度、模量和断裂伸长率高于旋转式缝合复合材料;缝合复合材料拉伸应变云图具有区域性特征,树脂富集区、纤维弯曲位置、无缝线织物层位置及面内缝线位置的应变值依次递减。
A single-needle stitching device with a rotary needle was designed, and the effects of two needle running modes at different fabric thicknesses on the tensile properties of stitched composites were studied. The results showed that the friction degree between the needle at rotary state and fibers was higher than that of the needle at straight puncturing state;the tensile strength, modulus and elongation at state of 13-layer stitched composite prepared by using needle at rotary state were higher those of the stitched composite made by using needle at straight puncturing state;the tensile strength, modulus and elongation at break of 25-layer stitched composite prepared by using needle at straight puncturing state were higher than those of stitched composite made by using needle at rotary state. The tensile strain cloud map of the stitched composites had regional characteristics. The strain values at resin rich area, fiber bending position, fabric layer position without stitching thread and in-plane stitching thread position decreased gradually.
作者
徐温
焦亚男
毛丽贺
XU Wen;JIAO Ya-nan;MAO Li-he(School of Textile Science and Engineering,Tianjin Polytechnic University,Tianjin 300387;Key Laboratory of Advanced Textile Composites of Ministry of Education,Tianjin Polytechnic University,Tianjin 300387)
出处
《纺织科学与工程学报》
CAS
2020年第2期61-69,51,共10页
Journal of Textile Science & Engineering
基金
天津市高等学校创新团队培养计划(TD13-5043)。
