纺粘非织造布孔隙形状的定量分析  

Quantitative analysis of pore shape in spunbonded nonwovens

作　　者：金关秀[1,2] 应伟伟[1] 雷新[1] 从明芳 祝成炎[1] 

机构地区：[1]浙江理工大学材料与纺织学院,浙江杭州310018 [2]浙江工业职业技术学院,浙江绍兴312000

出　　处：《纺织学报》2015年第8期56-61,共6页Journal of Textile Research

摘　　要：为探究纺粘非织造布孔隙形状特征,按不同网帘频率制备了5种聚丙烯纺粘非织造布。采用宽长比等8个指标对孔隙形状作定量描述,并基于数字图像处理技术对指标值进行测量。运用主成分分析法对上述指标进行降维处理,提取反映孔隙扁平程度和边界光滑程度的2个主成分,由此不仅消除了原指标之间的不独立性,而且使研究得以简化。分析了网帘频率对孔隙形状的影响规律,结果表明随着网帘频率的增大,孔隙形状趋于扁平,边界光滑度呈先升后降态势。研究结果对揭示孔隙形状影响非织造材料过滤性能和力学性能的内在机制具有一定的参考价值。To study the characteristics of the pore shape in spunbonded nonwovens,five kinds of spunbonded polypropylene nonwovens were produced using different mesh belt frequency. The pore shape was characterized by 8 indexes such as breadth / length ratio. These indexes were measured by employing digital image processing technology. The reducing dimension calculation was applied to the above indexes using principal component analysis. Thus two principal components which reflect the pore flat degree and boundary roughness were extracted,respectively. Therefore it not only eliminates the interdependence among original indexes,but also simplifies the study. The influence of the mesh belt frequency on the pore shape was analyzed and the results show that with the increasing of the mesh belt frequency,the pore shape tend to become flatter,and the boundary roughness value first declines and then rises. The research results can provide a certain reference to understand the intrinsic mechanism of the influence of the pore shape on the filtration performance and the mechanical property of nonwovens.

关 键 词：纺粘非织造布 孔隙形状 数字图像处理 主成分分析 

分 类 号：TS174.1[轻工技术与工程—纺织材料与纺织品设计]