The Influence of Surfactants on the Interfacial Tension and Droplet Formation in UV Curable Jet Inks
Abstract:Is the droplet formation predictable by physical measurements? How strong does the interfacial tension influence the droplet formation? In this paper commercial surfactants of the different classes made of organic, fluorocarbon and silicone chemistry were investigated. To verify their performance and ability of adjusting the interfacial tension, different methods of surface tension measurement such as static surface tension, dynamic surface tension and dynamic contact angle were utilized. Interesting results and analogies could be observed. The influence on the droplet formation of the used surfactants was evaluated on an actual piezo drop-on-demand printhead and compared with the results gained by the physical measurement. To keep the possible interactions and dimensions as small as possible, very simple model formulations based on PONPGDA and TMPEOTA were used. In this paper the authors search for correlations in order to give guidance for the best choice of surfactant.
Document Type: Research Article
Publication date: 2009-01-01
For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.
Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.
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