研究人员提高高分子复合材料导电性

卢森堡大学(University of Luxembourg)的物理学家已经开发出一种新的方法来提高高分子复合材料的导电性，这种材料可以用于制造更高效的平板显示器和太阳能电池。

卢森堡的研究人员与荷兰的科学家合作，研究了高分子聚合物基体中的碳纳米管的电渗流（electrical percolation），并指出了渗流阈值（表示高分子复合材料变成导体的临界点）可以通过添加少量的导电胶来大幅度降低。研究人员在卢森堡进行了仿真，实验在埃因霍温大学（Eindhoven University，荷兰）进行。

“在这个项目中，我们的想法是使用尽量少的碳纳米管而又仍然受益于其属性有利的一面，”该项目负责人，卢森堡大学教授Tania Schilling解释说，“我们已经发现，通过补充可确定相互作用结果的另一种成分，来达到我们的目标。”通过在溶液中混合不同形状和大小的胶粒，形成系统网络是产生导电复合材料的先决条件。

卢森堡大学这项最近的材料科学研究发现发表在业内前沿的科学期刊《自然纳米技术》上。这一发现是卢森堡大学和和荷兰埃因霍温技术大学以及德国高分子研究所合作的成果。

编译：Aileen Zhu

点击参考原文：Researchers raise conductivity in polymeric composites

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Researchers raise conductivity in polymeric composites

Paul Buckley

Physicists at the University of Luxembourg have developed a new method to improve the electrical conductivity of polymeric composites which can be used to make flat-panel displays and solar cells more efficient.

The researchers in Luxembourg, in cooperation with scientists from the Netherlands, have studied the electrical percolation of carbon nanotubes in a polymer matrix and shown the percolation threshold - the point at which the polymer composite becomes conductive - can be considerably lowered if small quantities of a conductive polymer latex are added. The simulations were done in Luxembourg, while the experiments took place at Eindhoven University.

"In this project, the idea is to use as little as possible carbon nanotubes and still benefit from their favourable properties", explained the project leader at the University of Luxembourg, Prof. Tania Schilling, "we have discovered that, by adding a second component, we could make use of the resulting interactions to reach our goal." By mixing colloidal particles of differing shapes and sizes in the medium, system-spanning networks form which is the prerequisite for electrically conductive composites.

The recent finding of the materials scientists of the University of Luxembourg was published in the peer-reviewed, scientific journal ‘Nature Nanotechnology’. This finding is a result of a cooperation of scientists at the University of Luxembourg, the Technische Universiteit Eindhoven and the Dutch Polymer Institute.