Impact of Triple Roll Milling Processing Parameters on Fluidic/Rheological and Electrical Properties of Aqueous Graphene Ink,Advanced Engineering Materials

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Impact of Triple Roll Milling Processing Parameters on Fluidic/Rheological and Electrical Properties of Aqueous Graphene Ink
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-01-09 , DOI: 10.1002/adem.201901187
Sandeep Kumar ₁ , Pramod Kumar ₂ , Kapil Bhatt ₁ , Shilpi Shrivastva ₁ , Amit Kumar ₃ , Ravinder Singh ₄ , Rajesh Punia ₄ , Chandra Charu Tripathi ₁

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Graphene ink is a potential candidate for the printing of electronic devices. Rheological studies of graphene inks are necessary to estimate and tune the behavior of ink during and after printing. Ink constituents and their fundamental properties play an important role in modifying the rheological behavior of ink. During the processing of ink, modification of these properties takes place. So, it is quite important to investigate the role of processing equipment on the ink constituents and correspondingly on the rheological behavior of ink and printed functional devices. Herein, graphene ink formulation through a triple roll mill (TRM) is presented. The particle size of graphene ink reduces substantially with both the speed of rollers and number of passes. Approximately 52% reduction in particle size is observed after five passes at the highest roller speed, and it further reduces up to 72% with an increase in the number of passes. Correspondingly, solvent loss, density, and viscosity of the inks are observed in respect of roller speed and number of passes. The impact of TRM parameters on ink constituents, rheology, and electrical properties of screen‐printed resistors is discussed and explained in terms of simple analytical models.

中文翻译：

三辊研磨工艺参数对石墨烯水性油墨的流变/流变和电学性能的影响

石墨烯墨水是电子设备印刷的潜在候选者。石墨烯油墨的流变学研究对于估计和调整印刷过程中和印刷后的墨水行为是必要的。油墨成分及其基本特性在改变油墨的流变行为中起着重要作用。在油墨加工过程中，会发生这些特性的改变。因此，研究加工设备在油墨成分上的作用以及相应地在油墨和印刷功能器件的流变行为上的研究非常重要。在此，提出了通过三辊轧机（TRM）的石墨烯油墨制剂。石墨烯油墨的粒径随着辊子的速度和通过次数而大大降低。在最高的辊速下经过五次通过后，可观察到粒径减小约52％，随着通过次数的增加，粒径进一步减小至72％。相应地，关于辊速度和通过次数观察到油墨的溶剂损失，密度和粘度。通过简单的分析模型讨论并解释了TRM参数对油墨成分，流变学和丝网印刷电阻器电性能的影响。

更新日期：2020-01-09

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