Enhancing thermal conductivity of fluids with graphite nanoparticles and carbon nanotube
    1.
    发明申请
    Enhancing thermal conductivity of fluids with graphite nanoparticles and carbon nanotube 有权
    用石墨纳米颗粒和碳纳米管提高流体的导热性

    公开(公告)号:US20040209782A1

    公开(公告)日:2004-10-21

    申请号:US10730762

    申请日:2003-12-08

    Applicant: ASHLAND INC.

    Abstract: Fluid compositions that have enhanced thermal conductivity, up to 250% greater than their conventional analogues, and methods of preparation for these fluids are identified. The compositions contain at a minimum, a fluid media such as oil or water, and a selected effective amount of carbon nanomaterials necessary to enhance the thermal conductivity of the fluid. One of the preferred carbon nanomaterials is a high thermal conductivity graphite, exceeding that of the neat fluid to be dispersed therein in thermal conductivity, and ground, milled, or naturally prepared with mean particle size less than 500 nm, and preferably less than 200 nm, and most preferably less than 100 nm. The graphite is dispersed in the fluid by one or more of various methods, including ultrasonication, milling, and chemical dispersion. Carbon nanotube with graphitic structure is another preferred source of carbon nanomaterial, although other carbon nanomaterials are acceptable. To confer long term stability, the use of one or more chemical dispersants is preferred. The thermal conductivity enhancement, compared to the fluid without carbon nanomaterial, is somehow proportional to the amount of carbon nanomaterials (carbon nanotubes and/or graphite) added.

    Abstract translation: 确定了具有增强的导热性,高于其常规类似物250%的流体组合物以及这些流体的制备方法。 组合物至少包含诸如油或水的流体介质和选择的有效量的碳纳米材料,以增强流体的导热性。 优选的碳纳米材料之一是高导热性石墨,超过要在其中分散在其中的纯净流体的导热性,并且研磨,研磨或天然制备的平均粒度小于500nm,优选小于200nm ,最优选小于100nm。 石墨通过一种或多种各种方法分散在流体中,包括超声波处理,研磨和化学分散。 具有石墨结构的碳纳米管是碳纳米材料的另一优选来源,尽管其他碳纳米材料是可接受的。 为了赋予长期稳定性,优选使用一种或多种化学分散剂。 与没有碳纳米材料的流体相比,热导率增强与添加的碳纳米材料(碳纳米管和/或石墨)的量成比例。

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