AI Article Synopsis
- The study investigates the thermal properties of epoxy-acrylate blends specifically for LCD 3D printing, examining how a reactive monofunctional epoxy diluent affects these properties.
- The diluent, chosen for its low viscosity and reactivity, was added in varying amounts (15-25 wt%), and both thermal and photocuring processes were tested at different temperatures.
- Results indicated that controlling the diluent content and curing temperature improved the thermomechanical properties of the resin, significantly reducing the printing time for a reference part compared to earlier formulations.
Article Abstract
The aim of this study was to explore the thermal properties of epoxy-acrylate blends for the liquid crystal display (LCD) 3D printing technique. Starting from an epoxy-acrylate blend with a ratio of epoxy to acrylate of 50:50, the effect of adding a reactive monofunctional epoxy diluent was evaluated. The diluent was a resin composed by oxirane, mono[(C12-14 alkyl) methyl] derivatives selected for its low viscosity (i.e., 1.8 Poise) at room temperature and its reactivity. The diluent content varied from 15 to 25 wt% and, for all the formulation, double curing cycles, where thermal curing followed photocuring, were studied. The effect of different curing temperatures was also evaluated. The control of the diluent content and of the curing temperature allowed tailoring of the thermomechanical resin properties while improving the resin's processability. The glass transition ranged from 115.4 °C to 90.8 °C depending on the combination of diluent content and post-curing temperature. The resin developed displayed a faster processing time tested on a reference part with printing time of 4 h and 20 min that was much lower than the printing times (7 and 16 h) observed for the starting formulations.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10857280 | PMC |
| http://dx.doi.org/10.3390/polym16030358 | DOI Listing |
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