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首页> 外文期刊>Heat Transfer Engineering >Polymer Nanowire Arrays With High Thermal Conductivity and Superhydrophobicity Fabricated by a IMano-Molding Technique
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Polymer Nanowire Arrays With High Thermal Conductivity and Superhydrophobicity Fabricated by a IMano-Molding Technique

机译：通过IMano成型技术制造的具有高导热性和超疏水性的​​聚合物纳米线阵列

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摘要

High thermal conductivity is helpful for thermal control and management, and superhydrophobicity can benefit fluid friction reduction and liquid droplet control in micro-Manodevices. We report on a nano-molding technique that can prepare polyethylene nanowire arrays with high thermal conductivity (more than 10 W/m-K) and superhydrophobicity (contact angle > 750° ). The thermal conductivities of the fabricated high-density polyethylene nanowire arrays with diameters of 100 nm and 200 nm, measured by a laser flash method, are about 2 orders of magnitude higher than their bulk counterparts. The estimated thermal conductivity of a single high-density polyethylene nanowire is as high as 26.5 W/m-K at room temperature, while the thermal conductivity of low-density polyethylene nanowire is a little smaller. The self-organized surfaces of polymer nanowire arrays are found to have micro-to-nanoscale hierarchical nanostructures, and have superhydrophobicity of greater than 150° contact angles for water. We also measure the wettability of organic liquids, including glycerin, ethanol, paraffin liquid, and methyl silicone oil. We find glycerin gives hydrophobic wettability, but the others give hydrophilic wettabilities. This technique is promising for fabrication due to the advantages of simple fabrication, high quality, low cost, and mass production.
机译：高导热率有助于热控制和管理，超疏水性可有助于减少微纳米器件中的流体摩擦并控制液滴。我们报告了一种纳米成型技术，该技术可以制备具有高导热率（大于10 W / m-K）和超疏水性（接触角> 750°）的聚乙烯纳米线阵列。通过激光闪光法测得的直径为100 nm和200 nm的高密度聚乙烯纳米线阵列的热导率比其本体的热导率高约2个数量级。一条高密度聚乙烯纳米线在室温下的估计热导率高达26.5 W / m-K，而低密度聚乙烯纳米线的热导率略小。发现聚合物纳米线阵列的自组织表面具有微米级至纳米级的分级纳米结构，并且对于水具有大于150°接触角的超疏水性。我们还测量了有机液体（包括甘油，乙醇，石蜡液体和甲基硅油）的润湿性。我们发现甘油具有疏水性，但其他具有亲水性。由于制造简单，质量高，成本低和批量生产的优点，该技术有望用于制造。

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  • 来源
    《Heat Transfer Engineering》 |2013年第3期|131-139|共9页
  • 作者

    BING-YANG CAO; JIE KONG; YAN XU; KAI-LEUNG YUNG; AN CAI;

  • 作者单位

    Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;

    Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi'an, China;

    Department of Industrial and Systems Engineering, Hong Kong Polytechnic University, Hong Kong, China;

    Department of Industrial and Systems Engineering, Hong Kong Polytechnic University, Hong Kong, China;

    Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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