In this study, a novel polyvinylbutyral (PVB) bonded polypropylene (PP) composite fibrous mat was fabricated via melt-electrospinning. In order to enhance the structure stability and mechanical properties of pristine PP fibrous mat system, preparation and characterization of the composite fibrous material by mixing different percentages of PVB and PP was designed. The PVB can form bonding point between the PP fibers, which can ease the slip phenomenon between strained fibers. The structure, morphology, tensile and tearing stress were measured systematically. The resultants exhibited that the tensile stress and tearing strength of composite fibrous mats were increased from 30.13 to 43.73 kPa and from 0.07 to 0.5 N, respectively. Meanwhile, the straight jet length and whipping range of each electrospun jets were analyzed via the images captured by a high-speed photography system during the spinning process. The experimental resultants depicted that composite system can lead to longer straight jet length and smaller whipping range.

在这项研究中，通过熔融静电纺丝制备了一种新型的聚乙烯醇缩丁醛（PVB）粘结的聚丙烯（PP）复合纤维垫。为了提高原始PP纤维毡系统的结构稳定性和力学性能，设计了通过混合不同百分比的PVB和PP来制备和表征复合纤维材料的方法。PVB可以在PP纤维之间形成粘结点，从而可以缓解应变纤维之间的打滑现象。系统地测量了结构，形态，拉伸应力和撕裂应力。所得结果表明，复合纤维垫的拉伸应力和撕裂强度分别从30.13kPa增加到43.73kPa和从0.07N增加到0.5N。与此同时，纺纱过程中，通过高速摄影系统捕获的图像分析了每个电纺喷嘴的直喷长度和搅动范围。实验结果表明，复合系统可导致更长的直线射流长度和更小的搅打范围。