Direct ink writing of geopolymeric inks
By G. Franchin, Paolo Scanferla, Luca Zeffiro, Hamada Elsayed, A. Baliello, G. Giacomello, Marco Pasetto, Paolo Colombo. 2017
167 citations recorded by the source corpus.
Abstract The development of geopolymeric inks with optimized rheological properties for DIW is presented; several inks with different water content and additives were compared to determine which parameters enable extrusion as well as shape retention. It is a challenging task, because the inks are subjected to ongoing poly-condensation reactions which continuously modify their rheological properties over time. Highly porous ceramic lattices (porosity up to ∼71 vol%) were fabricated with ∼0.8 mm struts and unsupported features with very limited sagging. Their physical and mechanical properties were characterized and correlated. Our approach can be successfully extended to other formulations. Geopolymeric foams have recently been proven as suitable for water filtration; the use of precisely designed, non stochastic printed structures could enhance the mechanical properties of the porous components, provide a better control of pressure drop and fluid dynamics inside the part and improve their performances consistently.
Subfields: Building and Construction, Polymers and Plastics, Surfaces, Coatings and Films
View Paper: https://www.semanticscholar.org/paper/a47b712f5bea1a963d9aceb84eb0169dfd1371ee
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In Building and Construction
Citations in the corpus
- Additive manufacturing of geopolymer for sustainable built environment (2017, methodology): “X-ray diffraction (XRD) and field emission electron microscopy (Fe-SEM) were used to characterize the raw materials and phase changed during poly-condensation process in geopolymer [28].”
- Measurement of tensile bond strength of 3D printed geopolymer mortar (2018, background): “Like normal concrete, it was observed that yield stress and viscosity of geopolymer mortar increases with time due to poly-condensation reaction that usually occurs in this material [24,25].”