Abstract:

In order to explore the ultra-high molecular weight polyethylene (UHMWPE) stab-resistant composite with a dendritic structure, a dendritic stab-resistant composite with  UHMWPE filaments sandwiched between PET/PA6 hollow segmented-orange bicomponent superfine fiber layers were prepared by of combination needle punching and spunlacing. The stab resistance and moisture permeability of the samples were characterized. The results show that superfine fibers exist in the UHMWPE filament layer in the form of fiber clusters to form superfine fiber channels, the UHMWPE filament layer and the superfine fiber layers are tangled with each other to form the samples with a dendritic structure under the impact of needle punching and spunlacing. Needling density and needling depth have significant influence on the moisture permeability, and the moisture permeability of the samples is 889.20 g/（m2·24h） when the needling density is 274.37 punches/cm2 and the nedling dipth is 7.70 mm. Furthermore, the quadratic models have high confidence, and can be applied in the theoretical analysis of the moisture permeability of the UHMWPE flexible stab-resistant composites with a dendritic structure.

Key words: ultra-high molecular weight polyethylene, nonwoven fabric, stab-resistant material, dendritic structure