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首页> 外文期刊>Journal of Imaging Science and Technology >Electrostatic Charging of Fumed Silica Particles: Effect of Surface Treatment with Fluoroalkylsilanes
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Electrostatic Charging of Fumed Silica Particles: Effect of Surface Treatment with Fluoroalkylsilanes

机译：气相二氧化硅颗粒的静电充电：氟烷基硅烷表面处理的影响

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摘要

Hydrophobically modified fumed silica particles are widely used in toner formulations to enhance toner free flow and triboelectric charging. Despite the important role that dielectric powders have in electrophotography, the triboelectric charging of such powders is still poorly understood. In this article, the authors present experimental data on the charging properties of toners formulated with fumed silica additives that were modified with different levels of fluoroalkylsilanes. The results show that at high ambient relative humidity (RH) conditions, the triboelectric charge correlates with the fluorine content of the additive, whereas at low RH, the triboelectric charge is effectively constant with respect to fluorine content. The same result was obtained with two different types of toner particles. The authors attempt to rationalize these results in terms of surface conductivity at high RH conditions and charge saturation at low RH conditions. They also present a series of zeta potential measurements that show a correlation with tribocharge at high RH and interpret the results in terms of the ion-transfer model for triboelectric charging.
机译：疏水改性的气相二氧化硅颗粒被广泛用于调色剂配方中，以增强调色剂的自由流动性和摩擦带电性。尽管介电粉末在电子照相术中具有重要作用，但对此类粉末的摩擦带电仍然知之甚少。在本文中，作者介绍了用气相二氧化硅添加剂配制的调色剂带电性能的实验数据，气相二氧化硅添加剂经不同含量的氟代烷基硅烷改性。结果表明，在高环境相对湿度（RH）条件下，摩擦电荷与添加剂的氟含量相关，而在低RH时，摩擦电荷相对于氟含量有效地恒定。用两种不同类型的调色剂颗粒获得相同的结果。作者试图根据高RH条件下的表面电导率和低RH条件下的电荷饱和来合理化这些结果。他们还提出了一系列zeta电位测量值，这些测量值显示了在高RH下与摩擦电荷的相关性，并根据摩擦带电的离子转移模型来解释结果。

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  • 来源
    《Journal of Imaging Science and Technology》 |2012年第5期|050403.1-050403.8|共8页
  • 作者

    Jinsong Liu; Joachim K. Floess; Hairuo Tu; Dmitry V. Fomitchev;

  • 作者单位

    Cabot Corporation, Business and Technology Center, 157 Concord Road, Billerica, MA 01821;

    Cabot Corporation, Business and Technology Center, 157 Concord Road, Billerica, MA 01821;

    Cabot Corporation, Business and Technology Center, 157 Concord Road, Billerica, MA 01821;

    Cabot Corporation, Business and Technology Center, 157 Concord Road, Billerica, MA 01821;

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