预定型机织物剪切变形实验研究  

Experimental research on shear deformation of tackified woven fabrics

作　　者：张一帆[1] 陈利[1] 孙绯[1] 孙颖[1] 李艳亮[2] 唐邦铭[2] 梁子青[2] 

机构地区：[1]天津工业大学复合材料研究所,先进纺织复合材料教育部重点实验室,天津300160 [2]北京航空材料研究院先进复合材料国防重点实验室,北京100095

出　　处：《复合材料学报》2009年第3期29-34,共6页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(A020309);先进复合材料国防重点实验室基金(9140C440203060C44);天津市应用基础及前沿技术研究计划(08JCZDJC24400)

摘　　要：在改进像框实验的基础上,对斜纹和缎纹预定型碳纤维织物的剪切性能进行了实验观察。研究发现,预定型机织物的剪切机制与织物剪切相似。根据实验结果,从定型剂的浓度和织物结构分析了预定型织物的剪切性能。随着定型剂浓度提高,织物的折皱角越大,织物剪切性能越差;与预定型斜纹织物相比,预定型缎纹织物相对较容易成型,剪切载荷较小。利用立式显微镜观察剪切过程中纱线宽度的变化,拟合得到了宽度变化方程,建立预定型机织物的折皱角模型,预测结果与实验结果误差在2°内,证明了该模型的有效性。Based on the modified experiments for picture-frame, the in-plain shear properties of the twill and satin tackified carbon fabrics were studied. The results show that the behavior of tackified woven fabrics is similar to that of the fabric. According to the testing results, the shear properties of tackified fabrics are analyzed from the concentration of tackifier and the fabric architecture. The shear properties of fabrics become poorer and the wrinkling angle is bigger as the concentration of tackifier is higher. Satin tackified fabrics are easier to form and the load is smaller, compared with tackified twill fabrics. The equation of variation of yarn width during shear loading is fitted from the microscopic observation. And a model is established to predict the wrinkling angle. The model is validated as the errors between computational and experimental results are less than 2°.

关 键 词：像框实验 预定型碳纤维织物 剪切变形 定型剂 锁紧角 折皱角 

分 类 号：TB332[一般工业技术—材料科学与工程]