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SiC and SiOC ceramic articles produced by stereolithography of acrylate modified polycarbosilane systems
Affiliation:1. Directeur de Recherche CNRS, Science des Procédés Céramiques et de Traitements de Surface - SPCTS, UMR 7315 CNRS-Centre Européen de la Céramique,12 Rue Atlantis 87068 LIMOGES Cedex, France;2. IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM), Université Montpellier, Place E. Bataillon, 34095 Montpellier, France;3. IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM), Université Montpellier, Place E. Bataillon, 34095 Montpellier, France;1. National Engineering Laboratory of Carbon Fiber Preparation Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, PR China;2. College of Material Science and Chemical Engineering,Ningbo University, Ningbo 315211, PR China;3. Engineering Laboratory of Specialty Fibers and Nuclear Energy Materials, Ningbo Institute of Materials Engineering and Technology, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, PR China;1. Additive Manufacturing Institute, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China;2. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China;3. Department of Automation, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China;4. Department of Chemistry and the Tsinghua Center for Frontier Polymer Research, Tsinghua University, Beijing 100084, China;1. Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, China;2. Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, China;3. State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China
Abstract:3D printed ceramic articles are receiving increased interest recently. Stereolithography (STL) is the method of choice where surface quality, high resolution and high aspect ratio architectures are concerned. Recently, we have developed a UV curable system consisting of allylhydridopolycarbosilane (AHPCS) and multifunctional acrylates. In our present work we investigate the photo-crosslinking mechanism and use selected formulations for the 3D printing of SiC rich ceramic articles using a desktop STL device. High resolution and complex shape articles are demonstrated. The versatile curing method can be used for the STL of practically most other vinyl/allyl modified preceramic polymers. The nano-porosity as well as SiOxCy composition can be tailored in a wide range for specific applications by the ratio of acrylate to AHPCS and by the type of acrylate and AHPCS used.
Keywords:Stereolithography  3D printing  Polycarbosilane  UV  Silicon carbide  Porosity
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