Temperature dependence of nylon and PTFE triboelectrification
Temperature dependence of nylon and PTFE triboelectrification
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DOI：
10.1103/physrevmaterials.3.085603
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发表时间：
2019-05
影响因子：
3.4
通讯作者：
I. A. Harris;Melody X. Lim;H. Jaeger
中科院分区：
文献类型：
--
作者：
I. A. Harris;Melody X. Lim;H. Jaeger
接触起电，或称摩擦起电，与涉及介电材料的广泛工业及自然过程密切相关。然而，电荷在绝缘体之间转移的基本机制仍不明确。在此，我们使用一种简单装置，使两个宏观表面反复接触，并在每次接触后测量表面电荷。我们改变表面温度，发现温度升高会导致电荷转移量减小。结合蒙特卡罗模拟和热重分析测量，我们的结果支持一种机制，即吸附在表面的水对电荷交换至关重要。我们的实验装置很容易扩展应用于各种与工业相关的材料。
Contact electrification, or tribocharging, is pertinent to a broad range of industrial and natural processes involving dielectric materials. However, the basic mechanism by which charge is transferred between insulators is still unclear. Here, we use a simple apparatus that brings two macroscopic surfaces into repeated contact and measures the charge on the surfaces after each contact. We vary the temperature of the surfaces, and find that increasing temperature leads to a decrease in the magnitude of charge transfer. When paired with a Monte-Carlo simulation and TGA measurements, our results support a mechanism where adsorbed surface water is crucial for charge exchange. Our setup is easily extendable to a variety of industrially relevant materials.