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首页> 外文期刊>Composites >First observation of the effect of the layer printing sequence on the molecular structure of three-dimensionally printed polymer, as shown by in- plane capacitance measurement
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First observation of the effect of the layer printing sequence on the molecular structure of three-dimensionally printed polymer, as shown by in- plane capacitance measurement

机译：首次观察层印刷顺序对三维印刷聚合物分子结构的影响，如面内电容测量所示

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摘要

The layer printing sequence in three-dimensional (3D) printing affects the molecular structure of the printed layers, as shown for bottom-up stereolithography printing using an ultraviolet-curable acrylate ester resin. The first printed layer has less molecular alignment than the last printed layer, due to the longer ultraviolet exposure and consequent more curing in the former. Increasing the layer thickness from 12.4 to 26.3 mu m decreases this effect, due to the greater molecular alignment for a smaller layer thickness. These results are obtained by measuring the in-plane capacitance for the two opposite surfaces of the printed material. The technique is unprecedented in 3D printing.
机译：三维（3D）印刷中的层印刷顺序会影响印刷层的分子结构，如使用紫外线可固化丙烯酸酯树脂的自下而上立体印刷所示。由于更长的紫外线暴露以及因此前者的更多固化，第一印刷层的分子排列比最后印刷层的分子排列少。将层厚度从12.4μm增加到26.3μm会降低这种效果，这是因为较小层厚度的分子排列较大。这些结果是通过测量印刷材料的两个相对表面的面内电容获得的。该技术在3D打印中是前所未有的。

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