Production and characterization of bamboo and flax fiber reinforced polylactic acid filaments for fused deposition modeling (FDM)

Polymer Composites - Tập 40 Số 5 - Trang 1951-1963 - 2019
Delphine Depuydt1, Michiel Balthazar1, Kevin Hendrickx2, Wim Six3, Eleonora Ferraris4, Frederik Desplentere3, Jan Ivens2, Aart Willem Van Vuure1
1KU Leuven, Department of Materials Engineering, Group T Leuven Campus, Andreas Vesaliusstraat 13, 3000 Leuven
2KU Leuven, Department of Materials Engineering, De Nayer Campus, Jan De Nayerlaan 5 Sint-Katelijne-Waver, 2860 Belgium
3KU Leuven, Department of Materials Engineering, Bruges Campus, Spoorwegstraat 12 Bruges, 8200 Belgium
4KU Leuven, Department of Mechanical Engineering, De Nayer Campus, Jan De Nayerlaan 5 Sint-Katelijne-Waver, 2860 Belgium

Tóm tắt

A new type of fiber reinforced filament materials for Fused Deposition Modeling applications has been developed. Polylactic acid (PLA), compounded with two types of plasticizer, is reinforced with bamboo and flax fibers. The fiber fractions are characterized by measuring their length (l) over diameter (d) before and after compounding so that the effect of the l/d on the final filament properties can be systematically studied. The pre‐processing and processing activities, to produce filaments with a diameter of 3 mm, are described. The porosities and the orientation of the fibers in the filament are assessed to predict the theoretical stiffness of the filament via short fiber mechanics which is compared to the experimental results. Reinforcing the PLA filament with short bamboo fibers (l/d = 4–5) increases the modulus with 91–230%, whereas the dust‐like fractions only show an increase up till 39%. The glass transition temperature of the produced filaments is also determined to investigate the suitability of the filaments and finally a demonstrator part was printed. POLYM. COMPOS., 40:1951–1963, 2019. © 2018 Society of Plastics Engineers

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Polymer Composites

Tập 40 Số 5

1951-1963

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