Wax and bentonite blends for prototyping industrial clay development: preliminary results
Authors: Agredo Orozco Andres Felipe , Acosta Maya Diego Andres , Rodriguez Arroyave Carlos Arturo , Sierra Zuluaga Luis Fernando 
Published: December 2021

The automotive design process and the materials in the automotive industry in recent years has caused great interest to the industrial and academic sector. In this study was to evaluate the effect of the amount of bentonite on the thermal and rheological properties of the compound bentonite / paraffin wax. Two bentonite ratios were used: paraffin wax (40:60 and 30:70). The paraffin was characterized by Fourier transform infrared spectroscopy (FTIR), the bentonite was characterized by means of x-ray diffraction (XRD), thermogravimetric analysis (TGA), X-ray fluorescence (XRF). The bentonite/paraffine wax composite was characterized by differential-scanning calorimetry (DSC) and rheology. The sample that contains a higher amount of bentonite shows a lower latent heat, and this could cause a greater heat transfer. Finally, the sample that has a lower amount of bentonite evidenced a lower viscosity, and it could be related to a lower interaction between the particles. The sample S1 due to its lower latent heat compared to S2 could represent an interesting alternative to develop prototypingclays. since these materials are characterized by their low working temperatures and easy malleability.
Keywords: automotive, prototyping, latent heat, bentonite, paraffin.
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