The Experts below are selected from a list of 22323 Experts worldwide ranked by ideXlab platform

Xin Liu - One of the best experts on this subject based on the ideXlab platform.

  • Surface modification of polyester fabric by Corona Discharge irradiation
    European Polymer Journal, 2002
    Co-Authors: Xin Liu
    Abstract:

    Polyester fabric was treated by Corona Discharge irradiation at different voltages. The treated fabric showed increased wicking and hydrophilic properties and the properties can be preserved for a long time. Dyeing of the treated fabric showed that dyeing speed and the dye-uptake were improved. Surface affinity between the treated fabric surface with modified starch sizing was also confirmed to be increased. This is generally useful for the sizing of polyester staple yarn and the polyester fabric dyeing. All the results are supposed due to the improved hydrophilic properties produced by the Corona Discharge treatment.

Weilin Xu - One of the best experts on this subject based on the ideXlab platform.

  • improving the adhesive property of polyester fabric with sodium hydroxide and Corona Discharge treatment
    Journal of Adhesion Science and Technology, 2011
    Co-Authors: Jiarun Huang, Juan Huang, Weilin Xu
    Abstract:

    In this study, polyester fabric was treated with sodium hydroxide combined with Corona Discharge to modify the surface properties. This was done to improve its adhesive property to ensure effective sizing with starch under different conditions. Scanning electron microscopy photographs showed that the surface of polyester fiber was etched more by the combined process than that by either Corona Discharge treatment or sodium hydroxide treatment. The results showed that the adhesive property of polyester fabric with starch was improved as a result of the treatment with sodium hydroxide or by Corona Discharge. However, fabric treated by the combined methods showed even better results. This study shows great potential for applying Corona Discharge in the sizing process of polyester staple yarn.

  • influence of temperature on Corona Discharge treatment of cotton fibers
    Fibers and Polymers, 2010
    Co-Authors: Juan Huang, Weilin Xu
    Abstract:

    In this study, Corona Discharge treatment was applied to modify the surface of cotton fibers at various temperatures. The fiber surface was roughened during this treatment and the surface oxygen content increased at a considerably low temperature, and then declined when temperature increased. Weight loss rate showed the treatment was fiercer as treated temperature increased. The breaking strength and surface adhesion property of the fabric treated with starch sizing increased to a certain extent and then decreased. These results suggest that the treated temperature plays a great role in the surface properties of cotton fiber when treated via Corona Discharge.

  • Application of Corona Discharge on desizing of polyvinyl alcohol on cotton fabrics
    Journal of Applied Polymer Science, 2009
    Co-Authors: Pibo Ma, Xin Wang, Weilin Xu
    Abstract:

    In this study, Corona Discharge was applied to optimize the desizing of polyvinyl alcohol (PVA) on cotton fabric. The weight of sized fabric decreased slightly when the PVA sized fabric was treated by Corona Discharge. Percent desizing rate (PDR) of PVA sized fabric increased evidently after the fabric was subjected to Corona Discharge treatment, PDR increased with the enhancement of Corona Discharge treatment by increase of applied voltage and treating time. Water dissolution time and water-contact angle decreased at the same time. SEM and AFM photos show the surface of PVA film was modified into uneven morphology with many ridges pores and cracks. ATR-FTIR analysis shows that the content of CO, COOH, and CO bonds was increased after the PVA film was treated by Corona Discharge. Corona Discharge can be applied to optimize the desizing of PVA on fabric by saving treating time and water or decrease the usage of the detergent of hydrogen peroxide; it provides a green process and energy saving method for textile finishing. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

  • improving the hydrophilic properties of wool fabrics via Corona Discharge and hydrogen peroxide treatment
    Journal of Applied Polymer Science, 2009
    Co-Authors: Xin Wang, Weilin Xu
    Abstract:

    Corona Discharge has been widely applied to modify the surfaces of polymers. In this study, Corona Discharge was combined with a hydrogen peroxide treatment to improve the hydrophilic properties of wool fabric. Scanning electron microscopy photographs showed that the tip of wool scales was etched after Corona Discharge and that parts of the scales were peeled off after the hydrogen peroxide treatment. The surface hydrophilic properties of the wool fabric were improved greatly by Corona Discharge. Increases in the Discharge voltage and the number of treatment passages enhanced the hydrophilic properties dramatically, but the improved properties deteriorated with increases in the number of washing cycles and storage time. The hydrogen peroxide treatment could improve the hydrophilic properties and especially the wicking properties of the wool fabric. The fabric became weaker and flexible with an average weight loss of 3% after the hydrogen peroxide treatment. A combination of Corona Discharge treatment and the hydrogen peroxide treatment made the wool fabric absolutely hydrophilic; the water penetration time of the treated fabric was less than 1 s even when the fabric was washed for several cycles or stored tor 6 months.

Shuiming Chen - One of the best experts on this subject based on the ideXlab platform.

  • Influence of humidity on the characteristics of positive Corona Discharge in air
    Physics of Plasmas, 2016
    Co-Authors: Bo Zhang, Shuiming Chen
    Abstract:

    Detailed positive Corona Discharge characteristics, such as the Corona onset voltage, pulse amplitude, repetition frequency, average Corona current, rise time, and half-wave time, are systematically studied under different air humidity with a single artificial defect electrode. The experimental results indicate that the pulse amplitude decreases with the increase of air humidity; meanwhile, the repetition frequency increases as the air humidity increases. This phenomenon is different from that of negative Corona Discharge. Therefore, to have an insight into the mechanism of humidity influence on positive Corona Discharge, a positive Corona Discharge model based on the continuity equations is utilized. The simulations present a dynamic development of positive Corona Discharge and, meanwhile, reveal the humidity influence on positive Corona Discharge.

Rayhua Horng - One of the best experts on this subject based on the ideXlab platform.

  • algan gan mos hemts with Corona Discharge plasma treatment
    Crystals, 2017
    Co-Authors: Shuohuang Yuan, Fengyeh Chang, Rayhua Horng
    Abstract:

    The effects of a Corona-Discharge plasma treatment on the performance of an AlGaN/GaN metal-oxide-semiconductor high-electron mobility transistor fabricated onto Si substrates were studied. The threshold voltage shifted from −8.15 to −4.21 V when the device was treated with an Al2O3 layer. The leakage current was reduced from 2.9 × 10−5 to 4.2 × 10−7 mA/mm, and the ION/IOFF ratio increased from 8.3 × 106 to 7.3 × 108 using the Corona-Discharge plasma treatment, which exhibited an increase of about two orders of magnitude. The device exhibited excellent performance with a subthreshold swing of 78 mV/dec and a peak gain of 47.92 mS/mm at VGS = 10 V.

Li Fade - One of the best experts on this subject based on the ideXlab platform.

  • Effect of Positive and Negative Corona Discharge Field on Vigor of Millet Seeds
    IEEE Access, 2020
    Co-Authors: Wang Jing, Song Hualu, Song Zhanhua, Yan Yinfa, Li Fade
    Abstract:

    To investigate the effects of Corona Discharge field treatment of different electric field strength with the different polarities on the vigor of millet seeds, the positive and negative Corona Discharge fields generated with arc-shaped prick electrodes and plate electrodes are different for millet seeds respectively. The treatment voltage was ( $2\times $ n kV, n = 1, $2\ldots 10$ ) and the time treated was 2 min. The results showed that after treatment by the Corona Discharge field, the germination potential, germination rate, germination index and vigor index of millet seeds increased to different degrees compared with the control. The optimal treatment voltages of the positive and negative Corona Discharge field were 12 kV. Under the optimal treatment voltage, the germination indexes (germination potential, germination rate, germination index, vigor index) of millet seeds were significantly different from the control ( $p ), and the millet seeds treated by the positive Corona Discharge field compared with the control group, the germination potential, germination rate, germination index and vigor index increased by 21.2%, 23.0%, 19.9% and 23.2% respectively. The germination indexes of the millet seeds treated by the negative Corona Discharge field increased by 29.1%, 28.5%, 26.9% and 32.1%. It was also found that under the same treatment voltage, the electrical conductivity of the leachates of the millet seed treated with the negative Corona Discharge field was lower than that of the positive, which indicated that the negative Corona Discharge field would repair the cell membrane more effectively. According to various indicators, it can be concluded that the negative Corona Discharge field treatment was better than the positive.