介质阻挡放电电压对聚酯织物放电特性及表面减反射效果的影响

Effects of Dielectric Barrier Discharge Voltage on Discharge Characteristics and Surface Antireflection of Polyester Fabrics

在不同外加电压条件下,研究介质阻挡放电的特性及外加电压对聚对苯二甲酸乙二醇酯织物碱减量辅助刻蚀和减反射效果的影响。研究发现,聚酯织物的放入可明显降低介质阻挡放电的峰峰值电压。在12kV放电电压下,聚酯织物的介质阻挡放电电流峰基本为单脉冲放电;在25kV放电电压下,聚酯织物的介质阻挡放电电流峰为多脉冲放电。在25kV放电电压下采用10min的等离子体和3min碱液对聚酯织物联合处理后,织物的纤维表面可形成更为密集的1.3μm左右的凹孔及纳米级凸起结构,在450～700nm可见光波长范围内聚酯织物的反射率下降2.5%～4.5%。结果表明,高电压下等离子体产生的丝状放电对聚酯织物碱减量具有明显辅助增强效果,通过对放电电压和放电时间的调控,可以调控等离子体联合碱液处理织物的纤维表面结构及聚酯织物对不同波长可见光的反射率。

The characteristics of dielectric barrier discharge(DBD)were researched under different applied voltages,and its effects on the etching and antireflection of polyethylene terephthalate fabric were also investigated.When the polyester fabric was placed in the dielectric barrier discharge region,the peak to peak voltage of the dielectric barrier discharge was significantly reduced.At 12 kV discharge voltage,the dielectric barrier discharge current of polyester fabric was single pulse discharge basically,and at 25 kV discharge voltage,the discharge current of polyester fabric was multi-pulse discharge.After the polyester fabric was treated 10 minutes using 25 kV plasma and combined with 3 minutes by alkali treatment,the nano scale convex structure with many concave hole(about 1.3μm)was formed in the surface of fabric.And the light reflectivity of polyester fabric was decreased by 2.5%-4.5 %in the range of 450-700 nm.The experiment results show that the filamentary discharge produced by the high voltage plasma has obvious auxiliary enhancement effect on the alkali decrement treatment of polyester fabric.After treated by the combined treatment,the surface structure of fabric and the fabric reflectivity of different wavelengths can be controlled by the regulation of discharge voltage and discharge time.