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Evaluation of washing effect on material properties after 3D DLP printing
Uvíra, Dominik ; Jaroš, Aleš (referee) ; Zemčík, Oskar (advisor)
This thesis focuses on the influence of washing on the mechanical properties of 3D DLP printed parts. The aim of the thesis was to experimentally determine the impact of washing agents with different wash durations on the mechanical properties of 3D printed parts using DLP technology. The research describes the devices and materials used. Furthermore, an analysis of washing 3D DLP printed parts is conducted, including a description of polymer dissolution, types of washing agents, and washing methods. Based on the research, materials were selected, including Standard resin, ABS-like resin, and Tough resin. The used washing agents are IPA, Simple Green industrial degreaser, DPM, and a special uncured resin remover called EasyClean. Samples were produced on the DLP 3D printer Anycubic Photon D2, and printing profiles were established based on the research part and own calibration. In the first experiment, the effectiveness of the agents in removing uncured resin was monitored. This was followed by an experimental evaluation of the tensile properties of the prepared samples. Furthermore, the notch toughness of each material was evaluated. In both cases, an analysis of fracture surfaces was conducted. Based on the achieved results, optimal washing durations were determined for all material and rinsing agent combinations, and areas of application were recommended. Subsequently, a custom rinsing agent combining low cost and good mechanical properties was proposed. The final part of the work consists of an economic evaluation of the various rinsing agents, resulting in specific recommendations for purchasing rinsing agents and rinsing duration.
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