Architecture influence on acoustic performance, EMI shielding, electrical and thermal, properties of 3D printed PLA/graphite/molybdenum disulfide composites

• DOI: 10.1016/j.matdes.2024.113241
• Publication Date: 2024-08-22T19:16:36Z
• Authors: Anna Łapińska; Natalia Grochowska; Kamil Cieplak; Paweł Płatek; Paul Wood; Piotr Deuszkiewicz; Anna Dużyńska; Bogna Sztorch; Julia Głowcka; Robert Przekop; Paweł Jóźwik; Tomasz Gołofit; Andrzej Plichta
• Keywords: Molybdenum disulfide

Fused Filament Fabrication (FFF) is one of the most emerging techniques nowadays. Affordable, easy to use, economical, for a broad audience − from specialists home users. These are only several its advantages. A disadvantage limited number available filament types, especially those with high performance. Therefore, aim work was investigate properties custom–made printouts based on polylactic (PLA), graphite (G) and molybdenum disulfide (MoS2). This looked at structural thermal analysis, acoustic performance, EMI shielding, electrical properties, including conductivity heat diffusivity. The following were considered during study: type printing architecture, infill density, formulations. Among best values, which obtained highest loaded sample 15 wt% 2 MoS2 (G15/M2), where shielding effectiveness surpassed SETOT ∼ 17 dB (per 1 mm thickness), remained low level. It exceeded σ 0.2 S/m; slightly over κ 0.4 W/mK, diffusivity almost α mm2/s. first step in designing high-performance materials dedicated advanced applications FFF technique.