Experimental investigation of the effect of the PDMS material’s oxygen- permeable window geometry on layerless uniform 3D printing

ABSTRACTOne of the fundamental issues in additive manufacturing processes is layer-by-layer printing, which influences printing time and part surface quality. One way to overcome this difficulty is continuous liquid interface production (CLIP), which has enabled the mass manufacture of polymer components through continuous printing. Due to a limitation in access to this system, different oxygen gas permeable windows composed of polydimethylsiloxane polymer with variable substrate shapes were introduced and evaluated in this research. The aim of this study is to improve the printing speed of porous components in a layerless uniform 3D printing system as compared to Digital light processing (DLP). The results of these experiments show that the island container, compared to the micro-channel container, has a 107% increase in the duration of continuous printing before the separation force begins, enhances the component’s look, increases the height of the printed part by 30%, and decreases the maximum separation force by 7.4 times.KEYWORDS: Additive manufacturingcontinuous liquid interface productionoxygen control zonelayerless uniform 3D printing Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementThe data that support the findings of this study are available from the corresponding author, M.Salehi, upon reasonable request.Additional informationNotes on contributorsMohammad SalehiMohammad Salehi, is a master’s student in the Mechanical Engineering Department at the University of KNTU, Tehran, Iran. He received his bachelor’s degree in Manufacturing engineering from Arak University of Technology.Jamal ZamaniJamal Zamani, Professor of Mechanics Engineering at the University of KNTU, Tehran, Iran. He received his PhD in Mechanical Engineering from Tarbiat Modares University, Iran.Siavash Moayedi ManizaniSiavash Moayedi Manizani, is a master’s student in the Mechanical Engineering Department at the University of KNTU, Tehran, Iran. He received his bachelor’s degree in Robotic Engineering from Islamic Azad University, Science and Research Branch, Tehran.