Polyurethane Nanofiber Artificial Leather with Improved Mechanical Properties and High Moisture Permeability Prepared by Electrospinning-in-situ Crosslinking

This paper reports a method for preparing artificial leather with high comfort and useful mechanical property. Blending thermoplastic polyurethane elastomer (TPU), Toluene diisocyanate (TDI) prepolymer 4,4-Methylene bis(2-chloroaniline) (MOCA), nanofiber was obtained by using online reactive electrospinning technology heat cross-linking. Compared the commercial PU leather, tensile strength of from 3.2 MPa to 11.2 MPa, air permeability 0.25 2.974 mm/s, moisture 981 4615 g/m2.24h. The NCO groups on TPU TDI molecules, NH2 MOCA cross-linking agent were polymerized treatment, cohesive structure formed between fibers, which significantly improve property leather. It close sheep in property, it much higher than those prepared this study has excellent prospects application fields luggage, footwear, clothing.