摘要
运用电子强力仪、偏振光显微镜、X 射线衍射仪和电子顺磁共振波谱仪等测试仪器,研究了聚酯纤维在未经拉伸、拉伸至屈服点、拉伸至即将断裂等不同形变条件下结构的变化,测定了纤维的结晶性、分子的取向、内部的微孔变化以及分子链的状态变异.结果表明:聚酯纤维在拉伸断裂过程中伴随着分子链的断裂,纤维的晶格变形和取向度随形变程度的增加而增加,纤维中的微孔有着尺寸增大和含量增多的趋势.
This paper deals with the structural changes of PET fiber under different de-formation conditions of undrawing,drawing to yield point and drawing to almost-fracture in the process of tensile fracture by using a series of testers,such aselectronic tension tester,polarizing microscope,X-ray diffractometer and electronspin resonance spectrum analyzer.The crystallinity,molecular orientation,microvoidscontent and size,and molecular chain state of fiber are measured.The results showthat the fracture of molecular chain follow in the irain of the tensile fracture ofPET fiber,that as the degree of deformation increases,the deformation of crystallattice and orientation of fiber increase,and the microvoids in fiber grow in sizeand content.
出处
《合成纤维工业》
CAS
CSCD
1990年第4期40-43,共4页
China Synthetic Fiber Industry
