copetpa6海岛型超纤革基布开纤工艺研究word格式论文.docxVIP

组分溶解后的分散以及对超纤革基布内部微孔的填充和 PA6 超细纤维束的易变形。关键词：海岛型超细纤维；超细纤维合成革；开纤； 撕裂强力；压缩回弹性IIResearch on the Splitting Process of COPET/PA6 Sea-Island Ultrafine Fiber Synthetic Leather Base FabricAbstractThrough year’s continuous researches and developments, synthetic leather has got flying increase on product qualities, varieties and yield. The expectation of people on the synthetic leather has become higher and higher, they expect it’s performance could get closer to vegetable leather, even surpass the vegetable leather. The producing process of Sea-Island ultrafine fiber synthetic leather stretches over four industry fields and the related professional technologies, which are the producing process of Sea-Island ultrafine fiber, the producing process of Sea-Island ultrafine fiber nonwoven fabric, the producing technology of Sea-Island ultrafine fiber synthetic leather and the dyeing-finishing technology of Sea-Island ultrafine fiber synthetic leather. These technologies opens up a way for Sea-Island ultrafine fiber synthetic leather.This article used the stereo microscope, SEM, electronic fabric tensile tester to characterize and analysis their structure, mechanical, permeability. Mainly the Sea-Island ultrafine fiber PU synthetic leather’s splitting process is systematic studied, the physical properties of the base fabric is studied, the relationship between the splitting process and the structure properties of the base fabric is studied, and then the reasons of these changes are also researched. The test results show that the diameter of the nascent fiber is about 21.67μm, the split single fiber’s diameter is about 3.5μm, the split fiber bundle’s diameter is between 22 to 30μm. The gum dipped base fabric longitudinal and transverse tensile strength increased about twice and 2.5 times over the nonwoven fabric which is significantly; Gum dipped base fabric longitudinal and transverse tearing strength reduced.Weightlessness rate, warp/weft tearing strength and fabric compression re