期刊
ADVANCES IN MECHANICAL ENGINEERING
卷 15, 期 11, 页码 -出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/16878132231210373
关键词
Wood fiber; additive manufacturing; 3D printing; thermosets; sodium-silicate; construction
The aims of this study were to investigate the printability of high-fraction wood and sodium-silicate composites (WSSC) for additive manufacturing and to develop a screw extrusion-based process for building construction applications. The printability of different formulations was determined by observing their viscosity, extrudability, print-bed and layer adhesion, and curing characteristics. The mechanical properties of printed and cured WSSC were found to be comparable to other materials reported in the literature.
The aims of this work were to investigate the printability of high-fraction wood and sodium-silicate composites (WSSC) for additive manufacturing and to develop a screw extrusion-based process to demonstrate this approach for building construction applications. A custom additive manufacturing system was fabricated, and mixtures of 40%-60% wood fiber and 60%-40% sodium silicate were printed. The printability of these formulations was determined by observing their viscosity, extrudability, print-bed and layer adhesion, and curing characteristics. Fiber to resin ratios of 45:55 to 50:50 were the most suitable for printing. The printability was also affected by printing temperature and nozzle travel speed. The mechanical properties of printed and cured WSSC, were determined by three-point bending, tensile, and compression testing. Tensile strength, bending strength, and elastic modulus were found to be comparable to those of 3D printed concrete and other wood-plastic composites reported in the literature. The WSSC was successfully printed into a panel indicating promise for use in additive manufacturing.
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