To realize the highly controllable performance of fiber-reinforced composites (FRCs), many efforts have been made to tailor the fiber alignment. Researchers mainly focus on controlling the fibers arranged in one direction. However, there is a lack of work to build a densely packed fiber forest on a quasi 2D plane. Herein, we proposed a simple and efficient papermaking method to prepare a uniform long carbon fiber (LCF)/polyphenylene sulfide (PPS) ultrafine fiber hybrid paper, followed by a thermal-compression approach to achieve quasi 2D ordered alignment of LCFs via controlling the composite thickness and LCF length. The obtained PPS composite has a uniform dispersion of quasi 2D ordered LCF forests and low depletion of LCFs, endowing the composite with outstanding tensile and flexural properties superior to some reported ones. Besides, the as-prepared composite exhibits controllable conductive performance along the parallel direction. The strategy endows the PPS composites with a uniform dispersion of quasi 2D ordered LCF forests and low depletion of LCFs during manufacturing procedure, which promise the resistance to interlaminar fracture.

为了实现纤维增强复合材料（FRC）的高度可控制的性能，已经进行了许多努力来定制纤维排列。研究人员主要致力于控制沿一个方向排列的纤维。但是，缺乏在准2D平面上构建密集的纤维森林的工作。本文中，我们提出了一种简单有效的造纸方法，以制备均匀的长碳纤维（LCF）/聚苯硫醚（PPS）超细纤维混合纸，然后采用热压方法通过控制复合材料来实现LCF的准2D有序排列厚度和LCF长度。所获得的PPS复合材料具有准2D有序LCF森林均匀分散和LCF耗竭少的特点，使复合材料具有出色的拉伸和弯曲性能，优于某些报道的材料。除了，所制备的复合材料沿平行方向显示出可控的导电性能。该策略赋予PPS复合材料以均匀的2D有序LCF森林分散性，并且在制造过程中LCF的消耗量低，从而保证了层间抗裂性。