Lepak-Kuc Sandra, Nowicki Łukasz, Janczak Daniel, Jakubowska Małgorzata
Institute of Metrology and Biomedical Engineering, Faculty of Mechatronics, Warsaw University of Technology, Sw. Andrzeja Boboli 8, 02-525 Warsaw, Poland.
Centre for Advanced Materials and Technologies (CEZAMAT), Warsaw University of Technology, 02-822 Warsaw, Poland.
Materials (Basel). 2023 Jan 31;16(3):1238. doi: 10.3390/ma16031238.
Screen-printed graphene layers on flexible substrates are one of the most advanced printed electronics developments of recent years. Obtaining thin, flexible, highly conductive components, whose applications are increasingly directed towards biomedical engineering and even medicine, requires an in-depth understanding of the correct choice of materials and procedures. Our work was aimed at investigating the influence of homogenisation in the triple rolling process over pastes dedicated to the screen printing technology, on their rheological parameters and the properties of the prints. The effect of selecting a suitable polymer matrix and different packing of graphene flakes was evaluated. Several studies were carried out, which can provide an excellent knowledge base in the context of graphene screen-printing pastes. Paste rheology, printability, path thickness, sheet resistance and adhesion to the substrate were investigated. Selected layers were also subjected to SEM imaging.
柔性基板上的丝网印刷石墨烯层是近年来最先进的印刷电子技术发展成果之一。要获得薄的、柔性的、高导电性的组件，其应用越来越多地指向生物医学工程甚至医学领域，就需要深入了解材料和工艺的正确选择。我们的工作旨在研究三辊轧制过程中的均化对用于丝网印刷技术的浆料的影响，以及对其流变参数和印刷品性能的影响。评估了选择合适的聚合物基体和不同石墨烯薄片堆积方式的效果。进行了多项研究，这些研究可以为石墨烯丝网印刷浆料提供一个优秀的知识库。研究了浆料的流变学、可印刷性、路径厚度、方块电阻以及与基板的附着力。还对选定的层进行了扫描电子显微镜成像。
