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The effect of the inorganic nanomaterials on the UV-absorption, rheological and mechanical properties of the rapid prototyping epoxy-based composites
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DOI：10.1007/s00289-016-1825-x.png)
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Abstract
En 中文
We here report the photosensitive nanocomposites as the new rapid prototyping materials. The nanocomposites are prepared using the properly surface-modified sepiolite nanofibers, graphene oxide, TiO2 and SiO2 nanoparticles as the reinforcing fillers in the epoxy-based resin. These nanocomposites are investigated about the mechanical properties, viscosity and light absorption. By fitting the rheological test results into the Krieger-Dougherty equation, the influences of the different-shaped fillers on the material viscosity and the maximum packing fraction of the fillers are obtained. The extinction coefficients of the inorganic fillers are obtained using UV-Vis spectroscopy. The mechanical properties of the nanocomposites are improved due to the surface-modified inorganic fillers. It is found that the as-prepared materials are appropriate for stereolithography and digital light processing, with which we succeed in fabricating the dental model of high dimensional accuracy.
Keywords:
Nanocomposites
Rapid prototyping
Stereolithography
Digital light processing
Epoxy
Viscosity
Light absorption
Dental model
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