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首页> 外文期刊>Journal of Materials Chemistry, C. materials for optical and electronic devices >3D printing of porous structures by UV-curable O/W emulsion for fabrication of conductive objects
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3D printing of porous structures by UV-curable O/W emulsion for fabrication of conductive objects

机译：通过可紫外固化的O / W乳剂对多孔结构进行3D打印以制造导电物体

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摘要

The growing interest in the field of three-dimensional printing has led to great demand for new materials. In this paper we should like to present a new ink for printing porous structures that can be used for embedding various functional materials. The ink is composed of a UV polymerizable oil-in-water emulsion which converts into a solid object upon UV irradiation, and upon evaporation of the aqueous phase, forms a porous structure. The 3D objects with their various porosities, were printed by a Digital Light Processing (DLP) printer. The total surface area of the object can be controlled by changing the emulsion's droplets size and the dispersed phase fraction. The printed 3D porous structures can be used in a variety of applications, and here we show a composite conductive object, made of silver and cross-linked polymer. After the porous object is formed, the pores are filled by vacuum, dipping in a dispersion of silver nanoparticles, followed by chemical sintering at room temperature, which results in conductive percolation paths within the 3D structure. Application of this structure is demonstrated for use as a 3D connector of an electrical circuit.
机译：在三维打印领域的兴趣日益浓厚，导致对新材料的巨大需求。在本文中，我们想提出一种用于印刷多孔结构的新型油墨，该油墨可用于嵌入各种功能材料。油墨由可紫外线聚合的水包油型乳液组成，该乳液在紫外线照射下转变为固体，并在水相蒸发后形成多孔结构。具有不同孔隙率的3D对象是由数字光处理（DLP）打印机打印的。物体的总表面积可以通过改变乳液的液滴尺寸和分散相分数来控制。印刷的3D多孔结构可用于多种应用，这里我们展示了一种由银和交联聚合物制成的复合导电物体。形成多孔物体后，通过真空填充孔，将其浸入银纳米颗粒的分散液中，然后在室温下进行化学烧结，从而在3D结构内形成导电的渗流路径。演示了此结构的应用，可用作电路的3D连接器。

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