十字形中空纤维异形度的表征方法探讨

Study on characterization of the shape factor of the cross-hollow fiber

运用组合的偏光显微镜微机图像采集与测试分析系统对十字形中空纤维横截面形态进行拍摄、检测,研究其异形度指标的表征方法。通过对径向异形度、截面异形度、分枝度和充满度指标的测试及对十字形中空纤维与中空纤维的截面形态差异的分析比较,提出用当量直径法或平均直径法计算十字形中空纤维的特征形状系数这一新的表征方法。研究结果显示,所采用的方法快速、简便、准确,具有实用价值。

The cross-section shape of the cross-hollow fiber was screened and tested by using computer in combination with the polarized light microscope image acquisition and analysis system,and the characterization method of the shape factor was studied.The shape factor of the fiber,such as shape factor in radius,shape factor in cross section,branch factor and volume content,was tested and compared.The cross-section shape of cross-hollow fiber was compared with that of the hollow fiber.The novel method of equivalent diameter or average diameter was brought forward to characterize the characteristic shape coefficient of the fiber.The results of the study indicated that the adopted method is rapid,simple,accurate and convenient and has practical value.