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Biochar filler in MEX and VPP additive manufacturing:characterization and reinforcement effects in polylactic acid and standard grade resin matrices

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Biochar 2023年第1期5卷 674-694页

作者： Nectarios Vidakis Dimitrios Kalderis Markos Petousis Emmanuel Maravelakis nikolaos Mountakis nikolaos bolanakis Vassilis Papadakis Department of Mechanical Engineering Hellenic Mediterranean University71410 HeraklionGreece Department of Electronic Engineering Hellenic Mediterranean University73133 ChaniaGreece Institute of Electronic Structure and Laser of the Foundation for Research and Technology-Hellas 71110 HeraklionGreece

The development of sustainable and functional biocomposites remains a robust research and industrial ***,the efficiency of using eco-friendly biochar as reinforcement in Additive Manufacturing(AM)was *** AM technologies were applied,i.e.,vat photopolymerization(VPP)and material extrusion(MEX).A standard-grade resin in VPP and the also eco-friendly biodegradable Polylactic Acid(PLA)in the MEX process were selected as polymeric *** was prepared in the study from olive *** were developed for both 3D printing processes at different biochar *** were 3D-printed and mechanically tested after international test *** Analysis and Raman revealed the thermal and structural characteristics of the *** and fractographic features were derived,among others,with Scanning Electron Microscopy(SEM)and Atomic Force Microscopy(AFM).Biochar was proven to be sufficient reinforcement agent,especially in the filament MEX process,reaching more than 20%improvement at 4 wt.%loading in tensile strength compared to the pure PLA control *** the VPP process,results were not as satisfactory,still,a 5%improvement was achieved in the flexural strength with 0.5 wt.%biochar *** findings prove the strong potential of biochar-based composites in AM applications,too.

关键词： Biochar Resin Polylactic acid(PLA) Vat photopolymerization(VPP) Material extrusion(MEX) Mechanical characterization

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