Effect of filament humidity on the properties of material extrusion 3D-printed acrylonitrile butadiene styrene/hexagonal boron nitride composites

Emergent Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 15, 2025

Abstract This study investigates the effect of filament moisture content on material extrusion (MEX) 3D-printed composites using acrylonitrile butadiene styrene (ABS) as polymer matrix and 0–10 vol% hexagonal boron nitride (BN) reinforcement. ABS/BN were prepared through batchwise compounding extruded into MEX-suitable filaments. The filaments conditioned at 30 °C 10% or 90% relative humidity (RH) before/during direct feeding 3D printer. Specimens fabricated with raster angles parallel (0°) perpendicular (90°) to their length. Micro- macrostructural analyses scanning electron microscopy computed tomography revealed intensive void formation, especially in BN-filled from humid was attributed BN acting a physical barrier, hindering outgassing evaporated water during printing. Mechanical properties evaluated tensile Charpy impact tests. Based test results, neat ABS least sensitive moisture, strength 0° angle dropping 40.5 MPa 36.7 storage RH increased 10 90%. For loading, dropped 34.1 22.3 MPa. exhibited similar reductions, ascribed porous structure caused by moisture. Thermal conductivity also examined, showing slightly superior performance for samples stored less conditions. unfilled ABS, decreased 0.188 0.185 W/mK, while composite, it 0.778 0.617 W/mK.

Language: Английский

Sensor for Cardiovascular Health Status Monitoring: A Review

Sensors and Actuators A Physical, Journal Year: 2025, Volume and Issue: unknown, P. 116720 - 116720

Published: May 1, 2025

Language: Английский