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

doi:10.19491/j.issn.1001-9278.2021.02.007

Abstract

Abstract:

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 4 μm， 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.

Key words: flash evaporation method, polyethylene non-woven fabric, shoe upper material

CLC Number:

TQ325.1⁺2

LI Lei, ZHU Qianqin, XIA Yunxia, ZHANG Junfeng, HE Lijun. Study on Preparation and Performance of Polyethylene Flash Non-woven Fabrics[J]. China Plastics, 2021, 35(2): 41-45.

Figures/Tables 6

Fig.1. Schematic diagram of non?woven fabric prepared by flash pressure release spinning

Fig.2. SEM and inset digital images of polyethylene non?woven fabric made with different melt flow rate

Fig.3. Nitrogen gas adsorption/desorption isotherm curves of polyethylene non?woven fabric

Fig.4. TG and DSC curves of polyethylene non?woven fabric

Fig.5. The tensile strength and elongation at break of the non?woven fabrics

Fig.6. Air permeability, water resistance and ink wettability of the non?woven fabrics

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