聚乙烯瞬时释压纺丝法无纺布制备及其性能研究

以不同熔体流动速率的高密度聚乙烯为原料,二氟一氯甲烷和四氟二氯乙烷混合物为溶剂,通过瞬时释压纺丝法制备加工成无纺布,制备得到聚乙烯无纺布材料.通过扫描电子显微镜、动态接触角测量仪、自动比表面积和孔径分析测试仪、差示扫描量热仪、热失重分析仪、电子强度仪和数字透气度仪对所制备的无纺布的形貌、接触角、比表面积、断裂强度和断裂...

Study on Preparation and Performance of Polyethylene Flash Non-woven Fabrics

The development of new shoe uppers is of great significance for improving the wearing comfort and product aesthetics.In this work,we report an investigation on the preparation of polyethylene non-woven fabrics by a flash evaporation method using high-density polyethylene resins with different melt flow indexes and a mixture of difluorochloromethane and tetrafluorodichloroethane as a solvent.The morphology,contact angle,specific surface area,breaking strength and breaking elongation,thermal properties,air permeability and water resistance of the obtained woven fabrics were characterized by using of scanning electron microscope,dynamic contact angle measuring instrument,automatic specific surface area and aperture analysis tester,differential scanning calorimeter,thermogravimetric analyzer,electronic strength machine and digital air permeability meter.The results indicated that all of the non-woven fabrics were constituted with pure polyethylene ultra-fine fibers with an average monofilament diameter of 4μm,and they achieved maximum tensile break strength of 220 N/5 cm.Such non-woven fabrics exhibited good air permeability,hydrophobicity and ink wettability.This type of non-woven fabrics exhibits a promising prospect for applications in novel shoe upper materials.