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首页> 外文会议>International Conference on Manufacturing Science and Technology >A Comparison of the Effect of Hydroxyl Modified Carbon Nanotubes and Graphenes on the Electrical and Mechanical Properties of Their Polyurethane Composites
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A Comparison of the Effect of Hydroxyl Modified Carbon Nanotubes and Graphenes on the Electrical and Mechanical Properties of Their Polyurethane Composites

机译：羟基改性碳纳米管与石墨烯对其聚氨酯复合材料电气和力学性能的比较

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摘要

Hydroxyl modified multi-walled carbon nanotubes (OH-MWCNT)/polyurethane (PU) and graphene nanosheets (GNS)/PU composites were prepared by dispersing the OH-MWCNT and GNS at different wt% in to the PU matrix. It was found that the electrical percolation threshold of the GNS/PU composite is much higher compared to that of OH-MWCNT/PU and also the electrical conductivity of the OH-MWCNT/PU composite is higher than the GNS/PU composite in the same level of filler content. This may be due to the two composites having different electrical conduction mechanisms: The OH-MWCNT/PU composite represents a three dimensional conduction system while, the GNS/PU composite represents a two dimensional conduction system. The improvement in the electrical conductivity with the incorporation of GNS as a filler in the composite is far lower than what theoretically expected. It is also observed that the tensile strength of the OHMWCNT/PU composite is higher compared to the GNS/PU in the same level filler content.
机译：通过将不同的重量％与PU基质分散到PU基质中，制备羟基改性的多壁碳纳米管（OH-MWCNT）/聚氨酯（PU）和石墨烯纳米片（GNS）/ PU复合材料。结果发现，与OH-MWCNT / PU相比，GNS / PU复合材料的电渗透阈值要高得多，并且OH-MWCNT / PU复合材料的电导率高于GNS / PU复合材料填料含量水平。这可能是由于具有不同导电机制的两个复合材料：OH-MWCNT / PU复合材料代表三维导通系统，而GNS / PU复合材料代表两维传导系统。在复合材料中掺入GNS作为填料的导电性的改善远远低于理论上预期的。还观察到，与相同水平填料含量的GNS / PU相比，OHMWNT / PU复合材料的拉伸强度较高。

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