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Morphology and Discharge Parameter Dependence of Property and Structure of RF Sputter-Deposited Fluorocarbon Coatings on PET Fibers

机译:PET纤维上射频溅射沉积碳氟化合物涂层的性能和结构的形貌和放电参数依赖性

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Radio frequency (RF) sputtering has been employed to fabricate a series of polymeric fluorocarbon coatings on PET fibers for a novel waterproof breathable fabric(WBF). SEM images reveal that the coating morphology on PET fibers is different form that on PET film under same discharge parameters. Numerous wire-like microano-sized particles have formed on the PET fiber surface, whereas 3-dimensional network consisting of numerous lying silkworm-like microano-sized particles has been created on the PET film substrate. The water contact angle of the WBFs was found to decrease remarkably with power but to rise with pressure due to the changes in the coating composition. The deposition time mainly affects coating thickness other than composition. The moisture permeability of these coated fabrics is near that of the uncoated fabrics since only the fiber surface has been individually covered with the coated grains while the fabric still remain original numerous pores. It was found that an increased target-substrate distance (TSD) leads to a decrease in deposition rate, while decreased TSD can make the coating more uneven. The contact angle of the coated specimens obtained at higher energy is always smaller than that obtained at lower energy for a given washing time, attributed to formation of more fluorine-lack groups in the former.
机译:射频(RF)溅射已被用于在PET纤维上制造一系列聚合碳氟化合物涂层,以用于新型防水透气织物(WBF)。 SEM图像表明,在相同的排放参数下,PET纤维上的涂层形态与PET薄膜上的涂层形态不同。在PET纤维表面上已经形成了许多线状的微米/纳米尺寸的颗粒,而在PET薄膜基材上已经形成了由许多躺在的蚕状微米/纳米尺寸的颗粒组成的3维网络。由于涂层组成的变化,发现WBF的水接触角随功率而显着减小,但随压力而增大。沉积时间主要影响涂层的厚度,而不是组成。这些涂覆的织物的透湿性接近未涂覆的织物的透湿性,因为仅纤维表面已经单独地被涂覆的颗粒覆盖,而织物仍然保持原始的许多孔。发现增加的靶-基片距离(TSD)导致沉积速率降低,而降低的TSD可使涂层更加不均匀。对于给定的洗涤时间,在较高能量下获得的涂层样品的接触角始终小于在较低能量下获得的涂层样品的接触角,这归因于在前者中形成了更多的缺氟基团。

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