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METHOD OF CARBON NANOTUBES DISPERSION IN POLYMERIC MATRIX

机译:聚合物基体中碳纳米管分散的方法

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In order to obtain better homogenous composite material, different carbon nanotubes (CNTs) dispersion techniques in the polymeric matrix are very well known. Due to the strong interactions between CNTs, the efficiency of these dispersion techniques is highly limited. The aim of this paper is to present improvement techniques considered as new step in the global dispersion process before the composite material final shape finalization. At this moment, it is very difficult to carry out a classical dispersion from technological point of view. In this paper, more than the acknowledged mechanical and ultrasonic dispersion method, the introduction of a genuine dispersion technique is proposed; it refers to an external vibrant magnetic field able to determine a vibration movement of CNTs covered by a molecular Fe (III) oxide. This external vibrant magnetic field is made by using a permanent magnet involved in a rotational movement around its own axis and also interacts with the individual CNTs own magnetic fields. The maintenance of a tensioned vibrating state at the individual CNT level contributes to a good dispersion state preservation and increases the connections and physical-chemical interactions hindering. The dispersion efficiency in a vibrant magnetic field was studied using the comparative methods, correlating the electronic microscopy analysis with the mechanical strength tests. With respect to the composite material obtained under these conditions, a significant quality improvement as well as a mechanical strength increase was observed.
机译:为了获得更好的均质复合材料,在聚合物基质中的不同碳纳米管(CNT)分散技术是众所周知的。由于碳纳米管之间的强相互作用,这些分散技术的效率受到极大限制。本文的目的是提出在复合材料最终形状最终定型之前被视为全局分散过程中新步骤的改进技术。此时,从技术角度来看,很难进行经典的分散。在本文中,除了公认的机械和超声分散方法外,还提出了一种真正的分散技术。它是指能够确定被分子Fe(III)氧化物覆盖的CNT的振动运动的外部充满活力的磁场。该外部充满活力的磁场是通过使用永久磁铁绕其自身的轴进行旋转运动而产生的,并且还与各个CNT自身的磁场相互作用。在单独的CNT水平上保持张紧的振动状态有助于良好的分散状态保持,并增加阻碍连接和物理化学相互作用的因素。使用比较方法研究了在充满活力的磁场中的分散效率,并将电子显微镜分析与机械强度测试相关联。对于在这些条件下获得的复合材料,观察到明显的质量改进以及机械强度的提高。

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