The quasi-static puncture resistance of flexible impregnated nonwovens made by filament or staple polyethylene terephthalate (PET) fibers

Abstract

PurposeThis paper aims to design a composite, aiming to improve the static puncture resistance through polyurethane impregnated treatment with five concentration gradients.Design/methodology/approachThe relationship between polyurethane concentration, the number of polyester nonwovens, component fiber type (filament or staple) and the static puncture resistance is explored respectively and elaborately.FindingsThis study provides a new perspective to design flexible composites with better static puncture resistance, feasible preparation process as well as low cost.Originality/valueThe results show that the static puncture resistance of nonwovens impregnated by polyurethane is improved obviously. Meanwhile the puncture strength-T of nonwovens increases first and then decreases with the increase of the number of layers, and the maximum puncture strength-T is found at 20 layers. Moreover, the composite with filaments illustrates better mechanical resistance.